Relevant bibliographies by topics / Carreau

Academic literature on the topic 'Carreau'

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Published: 4 June 2021
Last updated: 25 April 2022

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Journal articles on the topic "Carreau"

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Wolczynski, Slawomir, and Barbara Bilinska. "Serge Carreau (1947–2013)." Reproductive Biology 14, no. 1 (March 2014): 1. http://dx.doi.org/10.1016/j.repbio.2014.01.001.

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2

Molinier, Pascale, and Maria Fernanda Cepeda. "« Comme un chien à carreau »." Travailler 28, no. 2 (2012): 33. http://dx.doi.org/10.3917/trav.028.0033.

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3

Ahmed, Tamara Sh. "Effect of Inclined Magnetic Field on Peristaltic Flow of Carreau Fluid through Porous Medium in an Inclined Tapered Asymmetric Channel." Al-Mustansiriyah Journal of Science 29, no. 3 (March 10, 2019): 94. http://dx.doi.org/10.23851/mjs.v29i3.641.

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During this article, we have a tendency to show the peristaltic activity of magnetohydrodynamics flow of carreau fluid with heat transfer influence in an inclined tapered asymmetric channel through porous medium by exploitation the influence of non-slip boundary conditions. The tapered asymmetric channel is often created because of the intrauterine fluid flow induced by myometrial contraction and it had been simulated by asymmetric peristaltic fluid flow in an exceedingly two dimensional infinite non uniform channel, this fluid is known as hereby carreau fluid, conjointly we are able to say that one amongst carreau's applications is that the blood flow within the body of human. Industrial field, silicon oil is an example of carreau fluid. By exploitation, the perturbation technique for little values of weissenberg number, the nonlinear governing equations in the two-dimensional Cartesian coordinate system is resolved under the assumptions of long wavelength and low Reynolds number. The expressions of stream function, temperature distribution, the coefficient of heat transfer, frictional forces at the walls of the channel, pressure gradient are calculated. The effectiveness of interesting parameters on the inflow has been colluded and studied.
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Tabakova, S., N. Kutev, and St Radev. "Oscillatory Carreau flows in straight channels." Royal Society Open Science 7, no. 5 (May 2020): 191305. http://dx.doi.org/10.1098/rsos.191305.

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The present paper studies the oscillatory flow of Carreau fluid in a channel at different Womersley and Carreau numbers. At high and low Womersley numbers, asymptotic expansions in small parameters, connected with the Womersley number, are developed. For the intermediate Womersley numbers, theoretical bounds for the velocity solution and its gradient, depending on the problem parameters, are proven and explicitly given. It is shown that the Carreau number changes the type of the flow velocity to be closer to the Newtonian velocity corresponding to low or high shear or to have a transitional character between both Newtonian velocities. Some numerical examples for the velocity at different Carreau and Womersley numbers are presented for illustration with respect to the similar Newtonian flow velocity.
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Hayat, Tasawar, Fahad M. Abbasi, Ahmed Alsaedi, and Fuad Alsaadi. "Hall and Ohmic Heating Effects on the Peristaltic Transport of a Carreau–Yasuda Fluid in an Asymmetric Channel." Zeitschrift für Naturforschung A 69, no. 1-2 (February 1, 2014): 43–51. http://dx.doi.org/10.5560/zna.2013-0074.

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The effects of Hall current and Ohmic heating are analyzed for the peristaltic flow of a Carreau- Yasuda fluid in an asymmetric channel. The mathematical model for peristalsis of the Carreau- Yasuda fluid is provided for the first time in the literature. The problem is developed in the presence of viscous dissipation. Solutions for pressure gradient, stream function, axial velocity, and temperature are established and discussed. The heat transfer rate at the wall is first computed numerically and then examined. A comparative study for viscous, Carreau, and Carreau-Yasuda fluids is also made.
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Garnier, Lionel, Sebti Foufou, and Marc Neveu. "Conversion d'un carreau de Bézier rationnel biquadratique en un carreau de cyclide de Dupin quartique." Techniques et sciences informatiques 25, no. 6 (July 1, 2006): 709–34. http://dx.doi.org/10.3166/tsi.25.709-734.

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7

Caillot, Isabelle. "Paris 3e (Paris). Carreau du Temple." Archéologie médiévale, no. 42 (December 1, 2012): 249–51. http://dx.doi.org/10.4000/archeomed.10987.

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Coclite, Alessandro, Giuseppe Coclite, and Domenico De Tommasi. "Capsules Rheology in Carreau–Yasuda Fluids." Nanomaterials 10, no. 11 (November 3, 2020): 2190. http://dx.doi.org/10.3390/nano10112190.

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In this paper, a Multi Relaxation Time Lattice Boltzmann scheme is used to describe the evolution of a non-Newtonian fluid. Such method is coupled with an Immersed-Boundary technique for the transport of arbitrarily shaped objects navigating the flow. The no-slip boundary conditions on immersed bodies are imposed through a convenient forcing term accounting for the hydrodynamic force generated by the presence of immersed geometries added to momentum equation. Moreover, such forcing term accounts also for the force induced by the shear-dependent viscosity model characterizing the non-Newtonian behavior of the considered fluid. Firstly, the present model is validated against well-known benchmarks, namely the parabolic velocity profile obtained for the flow within two infinite laminae for five values of the viscosity model exponent, n = 0.25, 0.50, 0.75, 1.0, and 1.5. Then, the flow within a squared lid-driven cavity for Re = 1000 and 5000 (being Re the Reynolds number) is computed as a function of n for a shear-thinning (n < 1) fluid. Indeed, the local decrements in the viscosity field achieved in high-shear zones implies the increment in the local Reynolds number, thus moving the position of near-walls minima towards lateral walls. Moreover, the revolution under shear of neutrally buoyant plain elliptical capsules with different Aspect Ratio (AR = 2 and 3) is analyzed for shear-thinning (n < 1), Newtonian (n = 1), and shear-thickening (n > 1) surrounding fluids. Interestingly, the power law by Huang et al. describing the revolution period of such capsules as a function of the Reynolds number and the existence of a critical value, Rec, after which the tumbling is inhibited in confirmed also for non-Newtonian fluids. Analogously, the equilibrium lateral position yeq of such neutrally buoyant capsules when transported in a plane-Couette flow is studied detailing the variation of yeq as a function of the Reynolds number as well as of the exponent n.
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9

Agassant, Jean-François. "Special issue for Pierre J. Carreau." International Polymer Processing 35, no. 5 (November 1, 2020): 414. http://dx.doi.org/10.1515/ipp-2020-350502.

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10

Santhosh, H. B., Mahesha, and C. S. K. Raju. "Unsteady Carreau-Casson fluids over a radiated shrinking sheet in a suspension of dust and graphene nanoparticles with non-Fourier heat flux." Nonlinear Engineering 8, no. 1 (January 28, 2019): 419–28. http://dx.doi.org/10.1515/nleng-2017-0158.

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Abstract This study gives unsteady radiative magneto hydrodynamic Carreau-Casson fluids in suspension of graphene particle with Cattaneo-Christov model. A simulation is performed by mixing of graphene nanoparticles into the base water. The arising set of governing partial differential equations (PDEs) are transformed into set of ordinary differential equations (ODEs) using similarity transformations and then solved numerically using shooting technique with Runge-Kutta (RK) method. The computational results for non-dimensional temperature and velocity profiles are presented through graphs and tables. We also presented the numerical values of physical quantities (friction factor and local numbers) for various physical parameters. We compared the present results with existing literature under some limited case. At the end of this analysis we concluded that, the temperature profiles are higher in Casson fluid when compared to Carreau fluid. Similarly, the friction between the particles is more in Casson fluid compare to Carreau fluid, and heat transfer rate is high in Carreau fluid compared to Casson fluid. This help us to conclude that the cooling treatment by using Casson fluid is useful compared to Carreau fluid over unsteady sheet.
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Dissertations / Theses on the topic "Carreau"

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Moreau, Vincent. "Problèmes mathématiques liés aux équations de type Carreau." Paris 11, 1994. http://www.theses.fr/1994PA112350.

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Dans ce travail, nous nous interessons aux equations decrivant l'ecoulement d'un fluide obeissant a une loi de comportement de type carreau-yacoda. Nous commencons par presenter les outils mathematiques utilises pour cette etude, tout specialement la notion d'operateur monotone hemicontinu. Dans un second chapitre, nous envisageons des domaines dont la geometrie permet de se ramener a un probleme monodimensionnel. Nous donnons des resultats d'existence, d'unicite, de continuite par rapport aux parametres et de regularite des solutions. La troisieme partie reprend la meme problematique pour des ecoulements en dimension deux et trois d'espace. Nous montrons l'existence d'un attracteur global. Dans le cas particulier du domaine periodique sans bord, nous etablissons des proprietes supplementaires concernant la regularite des solutions
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Domurath, Jan. "Stress and strain amplification in non-Newtonian fluids filled with spherical and anisometric particles." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-233044.

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A numerical study of dilute suspensions based on a non-Newtonian matrix fluid and rigid spheroidal particles is performed. A Carreau fluid describes the non-Newtonian matrix. The special case of rigid spherical particles is considered. Here, a uniaxial elongational flow around a sphere is simulated and numerical homogenization is used to obtain the bulk viscosity of the dilute suspension for different applied rates of deformation and different thinning exponents. In the Newtonian regime the well-known Einstein result for the viscosity of a dilute suspension of rigid spherical particles is obtained. In the power-law regime it is found that the intrinsic viscosity depends only on the thinning exponent. Utilizing the simulation results a modification of the Carreau model for dilute suspensions with a non-Newtonian matrix fluid is proposed. To investigate the influence of the particle shape another numerical study is performed. In particular, different flows around spheroidal particles with different orientations are simulated and numerical homogenization is used to obtain the intrinsic viscosity of the suspension as function of applied rate of deformation, thinning exponent and aspect ratio. From the results it is possible to extract the rheological coefficients of the Lipscomb model. In the Newtonian regime the simulation results coincide with Lipscomb’s predictions. In the power-law regime the rheological coefficients depend strongly on the thinning exponent. Furthermore, simulation results indicate that the rheological coefficients additionally depend on the particle orientation in the non-linear regime
Une étude numérique sur des suspensions diluées à base d’un fluide non newtonien et de particules sphéroïdales rigides est réalisée. Le comportement de la matrice est décrit par un fluide de type Carreau. De particules sphériques et rigides est considéré en premier. Un écoulement en élongation uniaxiale autour d’une sphère est simulée. Ensuite, l’homogénéisation numérique est utilisée pour déterminer la viscosité apparente de la suspension pour différents taux de déformation et d’indices pseudoplastiques. Dans le domaine newtonien, le résultat d’Einstein donnant la viscosité d’une suspension diluée de particules sphériques et rigides est obtenu. Dans le régime en loi de puissance on constate que la viscosité intrinsèque dépend uniquement de l’indice pseudoplastique. Une autre étude numérique est effectuée pour investiguer l’influence de la forme des particules. Plusieurs écoulements autour d’une particule sphéroïdale sont simulés pour différentes orientations. Une homogénéisation numérique est ensuite utilisée pour obtenir la viscosité intrinsèque de la suspension en fonction du taux de déformation appliqué, de l’indice d’écoulement et du rapport de forme de la particule. A partir de ces résultats, il est possible d’exprimer les coefficients rhéologiques du modèle de Lipscomb. Dans le régime newtonien, les résultats coïncident avec les prédictions de Lipscomb. Dans le domaine en loi de puissance, les coefficients rhéologiques deviennent fortement dépendent de l’indice pseudoplastique. En outre, les résultats des simulations montrent que ces coefficients rhéologiques dépendent également de l’orientation des particules dans le régime non linéaire
Numerische Untersuchung zu verdünnten Suspensionen basierend auf einer nicht Newtonschen Matrixflüssigkeit und harten spheroidalen Partikeln wurde durchgeführt. Ein Carreau Fluid beschreibt die nicht Newtonsche Matrix. Zuerst wird der Spezialfall harter Kugeln betrachtet. Hierzu wird eine uniaxiale Dehnströmung um eine Kugel simuliert und numerische Homogenisierung wird verwendet um die effektive Viskosität der Suspension für verschieden aufgebrachte Deformationsgeschwindigkeiten und Verdünnungsexponenten zu bestimmen. Im Newtonschen Bereich wird die bekannte Lösung Einsteins für die Viskosität einer verdünnten Suspension harter Kugeln erhalten. Im power-law Bereich ist die intrinsische Viskosität einzig eine Funktion des Verdünnungsexponenten. Unter Nutzung der Simulationsergebnisse wird eine Modifikation des Carreau Modells vorgeschlagen. Um den Einfluss der Partikelform auf die nichtlinearen Eigenschaften zu untersuchen wird eine weitere numerische Simulationen durchgeführt. Dabei werden verschiedene Strömungen um spheroidale Partikel mit unterschiedlicher Orientierung simuliert und numerische Homogenisierung wird verwendet um die intrinsische Viskosität als Funktion der aufgebrachten Deformationsgeschwindigkeit, des Verdünnungsexponenten und des Partikelaspektverhältnisses zu bestimmen. Es ist möglich die rheologischen Parameter des Lipscomb Modells aus den Simulationsergebnissen zu bestimmen. Im Newtonschen Bereich stimmen die numerisch bestimmten Werte mit der Vorhersage Lipscomb‘s überein. Im power-law Bereich hängen die rheologischen Parameter stark vom Verdünnungsexponenten ab. Weiter kann man aus den Ergebnissen auf eine zusätzliche Abhängigkeit der rheologischen Parameter von der Partikelorientierung schließen
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3

Domurath, Jan. "Stress and strain amplification in non-Newtonian fluids filled with spherical and anisometric particles." Thesis, Lorient, 2017. http://www.theses.fr/2017LORIS478/document.

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Une étude numérique des suspensions diluées à base d'un fluide à matrice non newtonienne et de particules sphéroïdales rigides est réalisée. Un fluide de Carreau décrit la matrice non newtonienne. Le cas particulier des particules sphériques rigides est pris en compte. Ici, on simule un écoulement élongationnel uniaxial autour d'une sphère et on utilise l'homogénéisation numérique pour obtenir la viscosité apparente de la suspension diluée pour différents taux de déformation appliqués et différents exposants de dilution. Dans le régime newtonien, on obtient le fameux résultat d'Einstein pour la viscosité d'une suspension diluée de particules sphériques rigides. Dans le régime de la loi sur la puissance, on constate que la viscosité intrinsèque ne dépend que de l'exposant d'amincissement. En utilisant les résultats de la simulation, une modification du modèle de Carreau pour les suspensions diluées avec un fluide de matrice non newtonienne est proposée. Pour étudier l'influence de la forme des particules, une autre étude numérique est réalisée. En particulier, différents écoulements autour de particules sphéroïdales de différentes orientations sont simulés et une homogénéisation numérique est utilisée pour obtenir la viscosité intrinsèque de la suspension en fonction de la vitesse de déformation appliquée, de l'exposant d'amincissement et du rapport de forme. A partir des résultats, il est possible d'extraire les coefficients rhéologiques du modèle Lipscomb. Dans le régime newtonien, les résultats de simulation coïncident avec les prévisions de Lipscomb. Dans le régime de la loi de puissance, les coefficients rhéologiques dépendent fortement de l'exposant d'éclaircie. De plus, les résultats de la simulation indiquent que les coefficients rhéologiques dépendent en outre de l'orientation des particules en régime non linéaire
A numerical study of dilute suspensions based on a non-Newtonian matrix fluid and rigid spheroidal particles is performed. A Carreau fluid describes the non-Newtonian matrix. The special case of rigid spherical particles is considered. Here, a uniaxial elongational flow around a sphere is simulated and numerical homogenization is used to obtain the bulk viscosity of the dilute suspension for different applied rates of deformation and different thinning exponents. In the Newtonian regime the well-known Einstein result for the viscosity of a dilute suspension of rigid spherical particles is obtained. In the power-law regime it is found that the intrinsic viscosity depends only on the thinning exponent. Utilizing the simulation results a modification of the Carreau model for dilute suspensions with a non-Newtonian matrix fluid is proposed. To investigate the influence of the particle shape another numerical study is performed. In particular, different flows around spheroidal particles with different orientations are simulated and numerical homogenization is used to obtain the intrinsic viscosity of the suspension as function of applied rate of deformation, thinning exponent and aspect ratio. From the results it is possible to extract the rheological coefficients of the Lipscomb model. In the Newtonian regime the simulation results coincide with Lipscomb’s predictions. In the power-law regime the rheological coefficients depend strongly on the thinning exponent. Furthermore, simulation results indicate that the rheological coefficients additionally depend on the particle orientation in the non-linear regime
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4

Boughanim, Fouad. "Etude des écoulements isothermes et non isothermes des fluides non newtoniens : loi de carreau, loi de puissance." Saint-Etienne, 1996. http://www.theses.fr/1996STET4006.

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Dans ce travail, nous nous sommes intéressés au comportement asymptotique des écoulements tridimensionnels isothermes et non-isothermes des fluides non-newtoniens dans des domaines de faible épaisseur. Nous considérons d'abord un écoulement isotherme dont la viscosité suit le modèle de carreau ; on établit un théorème de convergence pour la vitesse et la pression quand l'épaisseur du domaine tend vers zéro. On fait apparaitre des valeurs critiques pour le nombre de Reynolds et nous donnons une condition faisant intervenir celui-ci et l'épaisseur du domaine pour que les approximations d'Hele-Shaw soient valables. Nous avons également étudié le comportement asymptotique d'un problème tridimensionnel où l'équation du mouvement est couplée avec une équation de type convection-diffusion et où la viscosité est donnée comme produit de la loi de puissance et de la loi d'Arrhenius. Nous obtenons dans ce cas un modèle limite découplé donné par une loi de type Poiseuille bidimensionnelle non-linéaire. La partie numérique de ce travail consiste à valider la loi limite obtenue dans le cas d'un écoulement non-isotherme. Nous utilisons pour cela une méthode d'éléments finis
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López, Carranza Santiago Nicolás. "Transition laminaire-turbulent en conduite cylindrique pour un fluide non Newtonien." Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0118/document.

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L'objectif de cette thèse est de fournir une analyse de la transition vers la turbulence d'un fluide rhéofluidifiant (fluide de Carreau) dans une conduite cylindrique. Pour cela, un code pseudo-spectral de type Petrov-Galerkin a été développé. Une analyse linéaire de stabilité de l'écoulement laminaire est effectuée, montrant que cet écoulement est linéairement stable. Ensuite, des perturbations sous la forme des rouleaux longitudinaux contra-rotatifs sont utilisées comme condition initiale. Les termes non linéaires d'inertie et visqueux créent un écoulement secondaire avec des points d'inflexion, linéairement instable vis-à-vis de perturbations 3D. Une analyse linéaire de stabilité de ce nouvel écoulement de base bidimensionnelle est réalisée. La forme des vecteurs propres critiques est analysé. Enfin, une analyse non linéaire de stabilité de rouleaux vis-à-vis des perturbations tridimensionnelles de faible amplitude est effectuée, obtenant un retard pour la transition vers la turbulence des fluides rhéofluidifiants par rapport au cas Newtonien et une tendance à l'asymétrie du profil de vitesse axiale
The main objective of this thesis is to provide a description of the transition to turbulence of a shear thinning fluid in pipe flow. A linear stability analysis of the base flow is done. Results show that the flow is linearly stable and the optimal perturbation is given by a pair of counter rotating vortex. This kind of perturbation is used as an initial condition of a computational code which integrates the governing equations. Inertial and viscous non linear terms generate a secondary base flow with inflection points, which is linearly unstable to 3D perturbations. A secondary instability analysis is done, regarding the shape of unstable eigenvectors. Depending the rheological parameters and the size of the primary perturbation, the unstable mode might be near the wall or the center of the pipe. Finally, a non linear stability analysis of the streaks to 3D perturbations of weak amplitude, obtaining a delay in the transition to turbulence due to shear thinning
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Chan, Weng Yew, and chanwengyew@gmail com. "Simulation of arterial stenosis incorporating fluid-structural interaction and non-Newtonian blood flow." RMIT University. Aerospace, Mechanical and Manufacturing Engineering, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20070108.164458.

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The aim of this study is to investigate the fluid-structural response to pulsatile Newtonian and non-Newtonian blood flow through an axisymmetric stenosed vessel using FLOTRAN and ANSYS. This is to provide a basic understanding of atherosclerosis. The flow was set to be laminar and follows a sinusoidal waveform. The solid model was set to have isotropic elastic properties. The Fluid-Structural Interaction (FSI) coupling was two-way and iterative. Rigid and Newtonian cases were investigated to provide an understanding on the effects of incorporating FSI into the model. The wall expansion was found to decrease the axial velocity and increase the recirculation effects of the flow. To validate the models and methods used, the results were compared with the study by Lee and Xu [2002] and Ohja et al [1989]. Close comparisons were achieved, suggesting the models used were valid. Two non-Newtonian models were investigated with FSI: Carreau and Power Law models. The Carreau model fluid behaviour was very close to the Newtonian model. The Power Law model produced significant difference in viscosity, velocity and wall shear stress distributions. Pressure distribution for all models was similar. In order to quantify the changes, Importance Factor (IG) was introduced to determine the overall non-Newtonian effects at two regions: the entire flow model and about the vessel wall. The Carreau model showed reasonable values of IG whereas the Power Law model showed excessive values. Transient and geometrical effects were found to affect the Importance Factor. The stress distributions for all models were found to be similar. Highest stress occurred at the shoulders of the stenosis where a stress concentration occurred due to sharp corners of the geometry and large bending moments. The highest stresses were in the axial direction. Notable circumferential stress was found at the ends of the vessel. Carreau model produced slightly higher stresses than the other models. Wall stresses were found to be primarily influenced by internal pressure, rather than wall shear stresses.
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Kostenko, Romaric. "Simulation d'écoulements non-newtoniens en milieu poreux macroscopique par la méthode de lattice-Boltzmann." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS561.

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Un fluide non-newtonien est un fluide dont la relation entre son taux de déformation et la contrainte qui lui est imposé n'est pas linéaire. Dans un milieu poreux, la contrainte imposée au fluide dépend de la pression imposée mais aussi de la taille des pores, et donc de la perméabilité à l'échelle macroscopique. Certains fluides peuvent avoir une rhéologie qui présente un changement à partir d'un seuil en contrainte. Si la taille des pores est aléatoire, le fluide va alors changer de régime de façon hétérogène dans le milieu. L'écoulement pourra alors présenter un premier régime où tout le fluide est en dessous du seuil, un régime où tout le fluide est au-dessus du seuil, et un régime intermédiaire pour lequel les deux types de rhéologie coexistent. Nous nous intéressons à ce régime intermédiaire pour des écoulements de fluide non-newtonien en milieu poreux macroscopique, étudiés par des simulations. Plus particulièrement, nous regardons l'écoulement d'un fluide de Bingham et celui d'un fluide de Carreau. Le fluide de Bingham ne s'écoule qu'à partir d'une contrainte seuil. En dessous du seuil, il se comporte comme un solide. Au-delà, sa relation taux de déformation/contrainte suis une loi affine. Les fluides de Carreau ont une relation taux de déformation/contrainte qui change de régime entre une loi linéaire et une loi de puissance. L'étude à l'échelle macroscopique se fait en simulant une loi de Darcy-Brinkman dans un champ de perméabilité hétérogène. Nous utilisons pour nos simulations la méthode de Boltzmann sur réseau, avec une grille de nœuds régulière, plus particulièrement le schéma à deux temps de relaxation d'Irina Ginzburg. Pour chaque fluide, nous regardons la relation débit-pression, ainsi que les propriétés géométriques des différents régimes d'écoulement. Nous caractérisons plus particulièrement les propriétés multi-échelles des régions dans un le même régime d'écoulement (clusters), telles que leur taille ou leur forme. Nous faisons aussi le lien entre ces propriétés géométriques et la théorie de la percolation, qui étudie le comportement de cartes de nœuds s'ouvrant aléatoirement et qui prédit des propriétés fractales
A non-newtonian fluid is a fluid which relation between it's shear rate and the stress under which it is put, is not linear. In a porous medium, the stress imposed to the fluid depends on the imposed pressure, but also on the pores size, and therefore on the macroscopic scale permeability. Some fluids have a rheology such that the fluid show a change of behaviour reaching a yield stress. If the pore size is random, then the fluid will present heterogeneous regime changes in the medium. The flow will then show a first regime where the whole fluid will be under the threshold, a regime where the whole fluid will be far above the threshold, and an intermediate regime for which both rheologies coexists. We are interested in intermediate regime for the flow of non-newtonian fluids in macroscopic porous media, and study it with numerical simulations. More particularly, we look at the flow of a Bingham fluid and that of a Carreau fluid. The Bingham fluid doesn't flow under a yield stress. Under the threshold, it behaves as a solid. Beyond, it's shear-rate/stress relation is an affine law. Carreau fluids have a shear-rate/stress relation that change regime between that of a newtonian fluid, and a power law. The macroscopic scale study is done simulating a Darcy-Brinkman law in a heterogeneous permeability field. We use for our simulations the lattice-Boltzmann method, on a regular node grid, and more specifically Irina Ginzburg two relaxation-time scheme. For each fluid, we study the flow-pressure relationship, as well as the geometric properties and the multi-scale properties in the fluid regions in the same flow regime (clusters), properties such as their size and shape. We also link these geometrical properties to the percolation theory, which studies the behaviour of randomly opening node maps and predicts fractal properties
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Kohút, Jiří. "Srovnání pulsujícího proudění newtonské a ne-newtonské kapaliny v komplexní geometrii." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-416445.

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This master's thesis deals with pulsating flow of Newtonian and non-Newtonian fluid. Theoretical part represents necessary theoretical knowledge for pulsating flow and understanding of non-Newtonian behaviour. Furthermore the thesis focus is directed on numerical simulation of pulsating flow in straight, ideally rigid tube and in patient-specific model of human artery, more precisely in carotid. Two methods are used: numerical solution based on finite volume method (FVM) and also analytical solution using Bessel functions by Womersley. Results are validated against experimental measurements of velocity profiles by particle image velocity method (PIV). The agreement between numerical and experimental data with consideration of PIV inaccuracy was was very good from both point of views - qualitative and quantitative. Numerical solution also compare influence of turbulence and non-Newtonian behaviour towards base (laminar flow, Newtonian fluid). Developed methodology is then applied on patient-specific model of carotid, which was renovated from computed tomography. Measurements in vivo in human arteries is very expensive and often invasive. Because of that measurement outputs are limited, most of the time on pressure and flow. Computational fluid dynamics (CFD) is non-invasive and outputs are through whole domain. Due to these advantages CFD significantly contributes to understanding of hemodynamics influence in cardiovascular diseases.
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Chekila, Abdelfateh. "Analyse non linéaire de la stabilité de l'écoulement de Poiseuille plan d'un fluide rhéofluidifiant." Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0022/document.

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L'objectif de cette thèse est d'analyser l'influence des non linéarités, du comportement rhéologique des fluides rhéofluidifiants, sur les conditions de stabilité et de transition vers la turbulence. Dans un premier temps, une analyse linéaire de stabilité avec une approche modale a été réalisée. Les résultats obtenus mettent clairement en évidence l'effet stabilisant de la rhéofluidification. Ensuite, une analyse faiblement non linéaire de stabilité a été menée en vue d'examiner l'influence de la perturbation de la viscosité sur la stabilité vis à vis de perturbations d'amplitude finie. L'analyse de la contribution des termes non linéaires d'inertie et visqueux montre que, contrairement aux termes d'inertie, les termes non linéaires visqueux ont tendance à accélérer l'écoulement et favoriser une bifurcation sur-critique. Les effets rhéofluidifiants tendent à réduire la dissipation visqueuse. Finalement, une analyse fortement non linéaire de stabilité a été conduite en utilisant les techniques de suivi de branches de solutions par des méthodes de continuation. Pour pouvoir traiter les termes visqueux fortement non linéaires, un code de calcul pseudo-spectral a été développé. Des solutions non linéaires d'équilibre ont été obtenues et caractérisées pour différentes valeurs des paramètres rhéologiques
The aim of this study is to understand the influence of the nonlinear rheological behaviour of the shear-thinning fluids on the flow stability and transition to turbulence. First, a linear stability analysis using modal approach was carried out. Results clearly highlight the stabilizing effect of shear-thinning. Then, as a first approach to take into account nonlinear effects of viscosity perturbation on the flow stability, a weakly nonlinear stability analysis is performed in the neighbourhood of the critical conditions. Results indicate that shear-thinning reduces the viscous dissipation and, in contrast to inertial terms, the nonlinear viscous terms tend to accelerate the flow and act in favour of supercritical bifurcation. Finally, a nonlinear stability analysis is done by following solution branches in the parameter space using continuation techniques. To deal with highly nonlinear viscous terms, a pseudo-spectral code is developed. Nonlinear equilibrium solutions was found and characterized for various values of the rheological parameters
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Lashgari, Iman. "Global stability analysis of complex fluids." Licentiate thesis, KTH, Mekanik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-139405.

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The main focus of this work is on the non-Newtonian effects on the inertial instabilities in shear flows. Both inelastic (Carreau) and elastic models (Oldroyd-B and FENE-P) have been employed to examine the main features of the non-Newtonian fluids; shear-thinning, shear-thickening and elasticity. Several classical configurations have been considered; flow past a circular cylinder, in a lid-driven cavity and in a channel. We have used a wide range of tools for linear stability analysis, modal, non-modal, energy and sensitivity analysis, to determine the instability mechanisms of the non-Newtonian flows and compare them with those of the Newtonian flows. Direct numerical simulations have been also used to prove the results obtained by the linear stability analysis. Significant modifications/alterations in the instability of the different flows have been observed under the action of the non-Newtonian effects. In general, shear-thinning/shear-thickening effects destabilize/stabilize the flow around the cylinder and in a lid driven cavity. Viscoelastic effects both stabilize and destabilize the channel flow depending on the ratio between the viscoelastic and flow time scales. The instability mechanism is just slightly modified in the cylinder flow whereas new instability mechanisms arise in the lid-driven cavity flow. We observe that the non-Newtonian effect can alter the inertial flow at both baseflow and perturbation level (e.g. Carreau fluid past a cylinder or in a lid driven cavity) or it may just affect the perturbations (e.g. Oldroyd-B fluid in channel). In all the flow cases studied, the modifications in the instability dynamics are shown to be strongly connected to the contribution of the different terms in the perturbation kinetic energy budget.

QC 20140113

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Books on the topic "Carreau"

1

Parcheminier, Frédéric. Le carreau de cinq lieues. Paris: EST, Samuel Tastet éditeur, 1992.

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Olivier, Douzou, ed. Les petits bonshommes sur le carreau. Rodez: Editions du Rouergue, 1994.

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Davezies, Robert. Clairières: Lettre à Yves Burdelot sur La reine de carreau. Lausanne: Editions L'Age d'homme, 1996.

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Serra, Carlos. Sur le carreau: Une étude sur la précarité sociale dans trois villes du Mozambique. Dakar: Codesria, 2005.

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(Brazil), Fundação Nacional de Arte. Espaço Brasil: Catalogue général de l'Espace Brésil : du 25 de juin au 11 de septembre 2005, Carreau du Temple, Paris. Brazil]: Fundação Nacional de Arte-FUNARTE, Ministério da Cultura, 2005.

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Carreaux émaillés. Paris: Éditions du Carrousel, 1999.

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Pérez-Erdélyi, Mireya. Carreras. Boston: Houghton Mifflin Co., 1985.

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1922-, Carrà Massimo, Dell'Acqua Gian Alberto 1909-, Carrà Laura, and Palazzo reale di Milano, eds. Carrà. Milano: Mazzotta, 1987.

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Gándara, Ana. La carreta. [Buenos Aires]: Emecé Editores, 1989.

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Cárdenas, Juan Sebastián. Carreras delictivas. Medellín, Colombia: Editorial Universidad de Antioquia, 2006.

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Book chapters on the topic "Carreau"

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Zhu, J., and C. F. Chan Man Fong. "Flow of Carreau fluids through packed beds." In Progress and Trends in Rheology II, 141–44. Heidelberg: Steinkopff, 1988. http://dx.doi.org/10.1007/978-3-642-49337-9_40.

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Bechtold, G. "Einfluss der Carreau-Viskosität auf die scheinbare Querpermeabilität von Faserbündeln." In Verbundwerkstoffe, 551–56. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/9783527609017.ch90.

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Anantha Kumar, K., Janke V. Ramana Reddy, V. Sugunamma, and N. Sandeep. "MHD Carreau Fluid Flow Past a Melting Surface with Cattaneo-Christov Heat Flux." In Trends in Mathematics, 325–36. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-01123-9_32.

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Schino, Mirella, and Eugenio Barba. "Fonds Roberta Carreri." In The Odin Teatret Archives, 317–58. First English-language edition. | Milton Park, Abingdon, Oxon ; New York : Routledge, 2017.: Routledge, 2017. http://dx.doi.org/10.4324/9781315202914-5.

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Visoni-Alonzo, Gilmar. "Background to the Carrera Uprising." In The Carrera Revolt and 'Hybrid Warfare' in Nineteenth-Century Central America, 47–75. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-58341-9_3.

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Ortiz, L., A. Mustafa, B. Rosenzweig, Rocio Carrero, and Timon McPhearson. "Correction to: Modeling Urban Futures: Data-Driven Scenarios of Climate Change and Vulnerability in Cities." In Resilient Urban Futures, C1. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63131-4_13.

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In the original version of the book, the chapter authors of Chapter 9 had missed to include their co-author Dr. Rocio Carrero to the author group unfortunately. The chapter has been updated now with Dr. Rocio Carrero's name and affiliation.
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Bohnen, Klaus. "Die Gewehre der Frau Carrar." In Brecht Handbuch, 331–36. Stuttgart: J.B. Metzler, 2001. http://dx.doi.org/10.1007/978-3-476-05612-2_31.

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Glab, Volker. "Pla, Josep: El carrer Estret." In Kindlers Literatur Lexikon (KLL), 1–2. Stuttgart: J.B. Metzler, 2020. http://dx.doi.org/10.1007/978-3-476-05728-0_13646-1.

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Jachowski, Bernd. "Aerodynamics of the new Porsche 911 Carrera." In Proceedings, 1067–84. Wiesbaden: Springer Fachmedien Wiesbaden, 2019. http://dx.doi.org/10.1007/978-3-658-25939-6_85.

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Chemi, Tatiana. "An Actress and Her Characters: Interview with Roberta Carreri." In A Theatre Laboratory Approach to Pedagogy and Creativity, 203–13. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-62788-5_7.

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Conference papers on the topic "Carreau"

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Tabakova, S., E. Nikolova, and St Radev. "Carreau model for oscillatory blood flow in a tube." In APPLICATION OF MATHEMATICS IN TECHNICAL AND NATURAL SCIENCES: 6th International Conference for Promoting the Application of Mathematics in Technical and Natural Sciences ‐ AMiTaNS ’14. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4902290.

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Mongkolwongrojn, M., and C. Aiumpornsin. "Thermoelastohydrodynamic Analysis of Journal Bearings With Non-Newtonian Carreau Fluids." In ASME/STLE 2009 International Joint Tribology Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/ijtc2009-15091.

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The paper focuses on the solution of a numerical model to explore the journal bearing performance under transient thermal elastohydrodynamic lubrication with non-Newtonian lubricants based on Carreau viscosity model. The newly derived time-dependent modified Reynolds equation and the adiabatic energy equation have been formulated using a non-Newtonian Carreau viscosity model. The simultaneous systems consisting of the modified Reynolds equation, elasticity equation and energy equation with initial conditions were solved numerically using the multi-grid multi-level method with full approximation technique. The analysis showed that the fluid characteristics as defined by the Carreau model, led to large differences in minimum film thickness and maximum temperature rise for bearing liners with low elastic modulus.
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Usha, R., S. Millet, H. BenHadid, and F. Rousset. "Stability of a Shear-Thinning Film on a Porous Substrate." In ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-30464.

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A significant feature of gravity-driven film flows of Newtonian and rheologically complex fluids down an inclined/vertical substrate is the instability of the free surface which manifests as surface waves having wavelengths much larger than the film thickness. There are a number of applications which can be modeled as thin film flow systems on porous substrates. Pascal [1] investigated the stability of a falling power-law film on an inclined porous substrate. This model for the fluid predicts a viscosity that goes to infinity as the shear rate approaches zero. There is a need to employ a more appropriate model to examine the effects of non-Newtonian rheology on the dynamics and stability of thin film free surface flows down inclined or vertical rigid/porous substrates. The four-parameter Carreau model predicts a viscosity that remains finite as the shear rate approaches zero and is given by η−η∞η0−η∞=[1+(δγ)˙2]n−12.(1) Weinstein [2] and Rousset et al. [3] have considered the Carreau model and have examined the temporal stability of a film flow down an impermeable rigid inclined substrate. The authors show that a shear-thinning Carreau fluid film on a rigid impermeable substrate is more unstable than a Newtonian film. This calls for an analysis that includes both the effects of Carreau non-Newtonian rheology and bottom permeability and the present study reports such an investigation of a Carreau non-Newtonian film on a porous inclined substrate.
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Dolapci, İhsan Timuçin. "Boundary layer equations and symmetry analysis of a Carreau fluid." In INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS 2015 (ICNAAM 2015). Author(s), 2016. http://dx.doi.org/10.1063/1.4952115.

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Jerônimo de Moraes, Vítor José, Pedro Vayssiere Brandão, and Leonardo Santos de Brito Alves. "STABILITY OF A RAYLEIGH-BENARD POISEUILLE FLOW CONSIDERING A CARREAU FLUID." In Brazilian Congress of Thermal Sciences and Engineering. ABCM, 2018. http://dx.doi.org/10.26678/abcm.encit2018.cit18-0602.

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Kutev, Nikolay, Sonia Tabakova, and Stefan Radev. "Approximation of the oscillatory blood flow using the Carreau viscosity model." In 2015 International Conference on Mechanics-Seventh Polyakhov's Reading. IEEE, 2015. http://dx.doi.org/10.1109/polyakhov.2015.7106747.

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Zimmerman, William B., Julia M. Rees, and Thomas J. Craven. "Inverse Problems in Non-Newtonian Electrokinetic Flows in Microchannel Networks." In ASME 7th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2004. http://dx.doi.org/10.1115/esda2004-58438.

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A model of the electrokinetic flow of a fluid with a nonlinear viscosity of the Carreau type is simulated by finite element methods in a microchannel T-junction. The simulations accelerate the fluid from rest using the model for boundary slip velocity imposed due to a Debye double layer motion proposed by Zimmerman and MacInnes (2003). The simulations demonstrate an interval of the transient evolution of the end wall pressure profile that scales proportionally with the Reynolds number. The shape of the steady state profile is shown to be sensitive to the relaxation time scale characterizing the shear rate dependence of a Carreau fluid. Consequently, this flow regime can be taken as a paradigm viscometric flow for electrokinetic motion.
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Kutev, Nilolay, and Sonia Tabakova. "Analysis of general unsteady flow of Carreau-Yasuda fluid in a pipe." In EIGHTH INTERNATIONAL CONFERENCE NEW TRENDS IN THE APPLICATIONS OF DIFFERENTIAL EQUATIONS IN SCIENCES (NTADES2021). AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0083551.

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Bair, Scott, and M. M. Khonsari. "Reynolds Equations for Common Generalized Newtonian Models and an Approximate Reynolds-Carreau Equation." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63345.

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Exact, closed form one-dimensional Reynolds equations are presented for the Ostwald-DeWaele model, Ellis model, Spriggs model and the double-Newtonian Rabinowitsch and Ferry models. From numerical solutions for flow rate, an approximate Reynolds-Carreau equation is obtained.
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Tabakova, Sonia, Nikolay Kutev, and Stefan Radev. "Estimates of the oscillatory flow in a straight channel at small Carreau numbers." In RENEWABLE ENERGY SOURCES AND TECHNOLOGIES. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5127501.

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Reports on the topic "Carreau"

1

Rodríguez-Tarduchy, Gemma. La secuenciación de ácidos nucleicos: una carrera contrarreloj. Sociedad Española de Bioquímica y Biología Molecular (SEBBM), September 2009. http://dx.doi.org/10.18567/sebbmdiv_rpc.2009.09.1.

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López Vargas, Kristian, Rafael Novella, and Diego Tocre. Plataformas web de información para la educación superior: ¿qué sabemos y cómo mejorarlas? Inter-American Development Bank, July 2021. http://dx.doi.org/10.18235/0003396.

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Al momento de tomar decisiones tan importantes como qué carrera estudiar y en qué institución hacerlo, los jóvenes suelen estar poco informados, por lo que a menudo toman decisiones subóptimas. Para aliviar esta falta de información, una herramienta costo-efectiva que se está utilizando en diversos países son las plataformas web con información acerca de programas de educación superior. Esta nota técnica tiene como objetivo servir como un punto de partida para las organizaciones que planean diseñar por primera vez o mejorar alguna plataforma web de este tipo y requieran revisar la experiencia internacional en estas prácticas. Este documento contiene: 1) una revisión de la literatura pertinente en torno al rol de la información para la elección de carreras y la utilidad de las plataformas web; 2) una revisión de un extenso grupo de plataformas alrededor del mundo a fin de identificar qué atributos suelen presentar y cómo organizan la información; y 3) a partir de la mejora del portal web peruano Ponte en Carrera, se busca dar un ejemplo de cómo identificar necesidades en la población objetivo y las oportunidades de mejora al portal y, a la vez, proponer cambios al respecto. Para este propósito, se emplearon grupos focales y encuestas a jóvenes en torno a sus preferencias y percepciones, las que brindan evidencia acerca de qué indicadores utilizar y cómo presentar la información en términos de relevancia y claridad.
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Poplin, Eric C., Paul C. Armstrong, Carol J. Poplin, and R. C. Goodwin. Cultural Resources Inventory of the Bonnet Carre' Spillway, Saint Charles Parish, Louisiana. Phase 2. Fort Belvoir, VA: Defense Technical Information Center, March 1988. http://dx.doi.org/10.21236/ada203808.

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Kawaguchi, Maki, Mayra Madriz, Sofie Kvist, Aja Jeanty, Raúl Dolz Sánchez, Candelaria Mas Pohmajevic, Francisca Maria Magdalena Rojas, Gibet Camós, and Paula Melisa Cruz Moreno. Corredor Verde Carrera Séptima: informe de socialización de los resultados de los estudios del Banco Interamericano de Desarrollo y Gehl. Inter-American Development Bank, November 2021. http://dx.doi.org/10.18235/0003758.

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Entre 2020 y 2021, el Banco Interamericano de Desarrollo (BID) trabajó de la mano de la firma consultora Gehl para apoyar al Instituto de Desarrollo Urbano (IDU) y la Secretaría Distrital de Movilidad de Bogotá en la conceptualización del Corredor Verde de la Carrera Séptima en Bogotá. Este producto de conocimiento resume los principales resultados de estos trabajos, a fin de que el público general de Colombia y otras ciudades de América Latina tengan una referencia sobre metodologías y recomendaciones clave para el éxito de los proyectos de transformación urbana.
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Durán Toledo, Diego. Los peligros del ministro candidato. Universidad Autónoma de Chile, July 2021. http://dx.doi.org/10.32457/20.500.12728/90532021110.

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Durante la última semana hemos visto que la carrera por llegar al sillón de La Moneda ha sumado un nuevo posible candidato, debido a la intención de Evopoli de transformar al titular de Hacienda, Ignacio Briones, en su carta presidencial.
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Comunicación de las Ciencias, Centro. Investigación en políticas públicas: aportes desde la academia a la sociedad. Universidad Autónoma de Chile, January 2020. http://dx.doi.org/10.32457/2050012728/9587202025.

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El Grupo de Investigación Observatorio de Políticas Públicas nace como una iniciativa al interior de la carrera de Administración Pública, para contribuir a la actividad de investigación y profundización de un campo disciplinar en el cual se centra gran parte de la acción estatal.
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Figueroa Saavedra, Carla. Proyecto Salud Telemental: Cápsula 5 - Recursos de apoyo. Universidad Autónoma de Chile, December 2020. http://dx.doi.org/10.32457/video202013.

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Proyecto “Salud Telemental, prevención del suicidio en la comunidad escolar”, desarrollado por un equipo multidisciplinario compuesto por la carrera de Fonoaudiología, Clínica Psicológica y la Oficina de Inclusión y Equidad de Género de la Universidad Autónoma de Chile en conjunto con el departamento de Psicología de la Universidad Católica del Maule.
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Figueroa Saavedra, Carla. Proyecto Salud Telemental: Cápsula 4 - Prevención del suicidio (material para adolescentes). Universidad Autónoma de Chile, December 2020. http://dx.doi.org/10.32457/video202016.

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Proyecto “Salud Telemental, prevención del suicidio en la comunidad escolar”, desarrollado por un equipo multidisciplinario compuesto por la carrera de Fonoaudiología, Clínica Psicológica y la Oficina de Inclusión y Equidad de Género de la Universidad Autónoma de Chile en conjunto con el departamento de Psicología de la Universidad Católica del Maule.
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Figueroa Saavedra, Carla. Proyecto Salud Telemental: Cápsula 3 - Prevención del suicidio (material para docentes). Universidad Autónoma de Chile, December 2020. http://dx.doi.org/10.32457/video202015.

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Proyecto “Salud Telemental, prevención del suicidio en la comunidad escolar”, desarrollado por un equipo multidisciplinario compuesto por la carrera de Fonoaudiología, Clínica Psicológica y la Oficina de Inclusión y Equidad de Género de la Universidad Autónoma de Chile en conjunto con el departamento de Psicología de la Universidad Católica del Maule.
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Figueroa Saavedra, Carla. Proyecto Salud Telemental: Cápsula 1 - Caracterización del suicidio. Universidad Autónoma de Chile, December 2020. http://dx.doi.org/10.32457/video202014.

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Proyecto “Salud Telemental, prevención del suicidio en la comunidad escolar”, desarrollado por un equipo multidisciplinario compuesto por la carrera de Fonoaudiología, Clínica Psicológica y la Oficina de Inclusión y Equidad de Género de la Universidad Autónoma de Chile en conjunto con el departamento de Psicología de la Universidad Católica del Maule.
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