Letteratura scientifica selezionata sul tema "Conduit geometry"
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Articoli di riviste sul tema "Conduit geometry":
Kozono, Tomofumi, Hidemi Ishibashi, Satoshi Okumura e Takahiro Miwa. "Conduit Flow Dynamics During the 1986 Sub-Plinian Eruption at Izu-Oshima Volcano". Journal of Disaster Research 17, n. 5 (1 agosto 2022): 754–67. http://dx.doi.org/10.20965/jdr.2022.p0754.
Shimizu, Yukimaru, Yoshiki Futaki e C. Samuel Martin. "Secondary Flow and Hydraulic Losses Within Sinuous Conduits of Rectangular Cross Section". Journal of Fluids Engineering 114, n. 4 (1 dicembre 1992): 593–600. http://dx.doi.org/10.1115/1.2910072.
Ostad, Hadi, Zargham Mohammadi e Francesco Fiorillo. "Assessing the Effect of Conduit Pattern and Type of Recharge on the Karst Spring Hydrograph: A Synthetic Modeling Approach". Water 15, n. 8 (19 aprile 2023): 1594. http://dx.doi.org/10.3390/w15081594.
Fountain, Andrew G., Robert B. Schlichting, Peter Jansson e Robert W. Jacobel. "Observations of englacial water passages:a fracture-dominated system". Annals of Glaciology 40 (2005): 25–30. http://dx.doi.org/10.3189/172756405781813762.
Gunn, John, e Chris Bradley. "Characterising Rhythmic and Episodic Pulsing Behaviour in the Castleton Karst, Derbyshire (UK), Using High Resolution in-Cave Monitoring". Water 15, n. 12 (20 giugno 2023): 2301. http://dx.doi.org/10.3390/w15122301.
Imqam, Abdulmohsin, Ze Wang e Baojun Bai. "Preformed-Particle-Gel Transport Through Heterogeneous Void-Space Conduits". SPE Journal 22, n. 05 (22 marzo 2017): 1437–47. http://dx.doi.org/10.2118/179705-pa.
Tsamis, Alkiviadis, Alexander Rachev e Nikos Stergiopulos. "A constituent-based model of age-related changes in conduit arteries". American Journal of Physiology-Heart and Circulatory Physiology 301, n. 4 (ottobre 2011): H1286—H1301. http://dx.doi.org/10.1152/ajpheart.00570.2010.
Rabah, Amal, Manuel Marcoux e David Labat. "Effects of Geometry on Artificial Tracer Dispersion in Synthetic Karst Conduit Networks". Water 15, n. 22 (7 novembre 2023): 3885. http://dx.doi.org/10.3390/w15223885.
KAMINTZIS, J. E., J. P. P. JONES, T. D. L. IRVINE-FYNN, T. O. HOLT, P. BUNTING, S. J. A. JENNINGS, P. R. PORTER e B. HUBBARD. "Assessing the applicability of terrestrial laser scanning for mapping englacial conduits". Journal of Glaciology 64, n. 243 (20 dicembre 2017): 37–48. http://dx.doi.org/10.1017/jog.2017.81.
Schuler, Thomas, e Urs H. Fischer. "Elucidating changes in the degree of tracer dispersion in a subglacial channel". Annals of Glaciology 37 (2003): 275–80. http://dx.doi.org/10.3189/172756403781815915.
Tesi sul tema "Conduit geometry":
Douros, Ioannis. "Towards a 3 dimensional dynamic generic speaker model to study geometry simplifications of the vocal tract using magnetic resonance imaging data". Electronic Thesis or Diss., Université de Lorraine, 2020. http://www.theses.fr/2020LORR0115.
In this thesis we used MRI (Magnetic Resonance Imaging) data of the vocal tract to study speech production. The first part consist of the study of the impact that the velum, the epiglottis and the head position has on the phonation of five french vowels. Acoustic simulations were used to compare the formants of the studied cases with the reference in order to measure their impact. For this part of the work, we used 3D static MR (Magnetic Resonance) images. As speech is usually a dynamic phenomenon, a question arose, whether it would be possible to process the 3D data in order to incorporate dynamic information of continuous speech. Therefore the second part presents some algorithms that one can use in order to enhance speech production data. Several image transformations were combined in order to generate estimations of vocal tract shapes which are more informative than the original ones. At this point, we envisaged apart from enhancing speech production data, to create a generic speaker model that could provide enhanced information not for a specific subject, but globally for speech. As a result, we devoted the third part in the investigation of an algorithm that one can use to create a spatiotemporal atlas of the vocal tract which can be used as a reference or standard speaker for speech studies as it is speaker independent. Finally, the last part of the thesis, refers to a selection of open questions of the field that are still left unanswered, some interesting directions that one can expand this thesis and some potential approaches that could help someone move forward towards these directions
Frantz, Yves. "Simulation stochastique des réseaux karstiques". Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0215.
Despite intensive explorations by speleologists, karstic networks remain only partially described as many conduits are not accessible to humans. The classical exploration techniques produce sparse data subject to uncertainties concerning the conduit position and their dimensions, which are essential parameters for flow simulations.Stochastic simulations make it possible to better handle and assess these uncertainties by offering several equally probable karstic system representations.The ideal simulator should allow for the construction of tridimensional karstic drain networks, respecting the field observations (karstification markers), the knowledge brought by tracer tests, the information collected in the accessible parts of the network and those obtained by the study of other networks.In this context, this PhD thesis offers 3 main contributions.The first contribution is the statistical analysis of a database of 49 karstic networks.It focuses on the study of conduit geometry, through the analysis of two metrics : the equivalent radius and the width-height ratio.No generic statistical law describing the network geometry was found.Nonetheless, the spatial variability of the geometrical properties at different scales was characterized, mostly through the development of 1D-curvilinear variograms.The widespread hypothesis of a hierarchical organization of the conduit geometries has also been analysed and rejected.The second contribution is the development of two methods allowing stochastic simulations of properties along karstic networks and based on the results of the statistical analysis. The first method focuses on the reproduction of the property variability at the network scale, while the second one focuses on the reproduction of the variability within and between the network branches.Both are based on the Sequential Gaussian Simulation methods and are adapted to 1D-curvilinear objects.The third contribution is the prototype of a method aiming to stochastically simulate discrete karstic networks as graphs (known as network skeletons}). We hope that once completed, it would allow the simulation of different network types, while taking directly into account field data and geological information. It is divided in three main steps : i) the generation of a point cloud, ii) the computation of the point connectivity and iii) their connection to create the skeleton of the karstic network.These contributions open new prospects regarding the simulation of karstic drain networks usable for flow simulation (e.g., SWMM, Epanet, Modflow-CFP), which should allow a better characterization of the associated flows
Díez, Mikel. "Studies of the Mechanics and Structure of Shallow Magmatic Plumbing Systems". Scholar Commons, 2008. https://scholarcommons.usf.edu/etd/214.
García, Araujo Víctor. "Propuesta urbano-arquitectónica para Santa Cruz Cuatenco: Una visión desde la geometría fractal". Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2020. http://hdl.handle.net/20.500.11799/111237.
Genuys, Grégoire. "Non-commutative homometric musical structures and chord distances in geometric pitch spaces". Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066576/document.
We study two main topics: non-commutative homometry and the notion of distance between musical chords. Two melodies are homometric if they share the same set of intervals. We transpose this notion to a chord sequence and more generally to semi-direct products, which allows to build a framework for the general study of homometry in non-commutative groups, such as the dihedral group. In the second part we define a mesure of distance between musical chords of different cardinalities, from a distance based on the notion of voice-leading
MEJÍA, QUEVEDO ARMANDO. "EL APUNTE FILOSÓFICO EN LA GEOMETRÍA DEL CAOS DE MAURICIO MOLINA: UNA LECTURA DE LA POSMODERNIDAD". Tesis de Licenciatura, UNIVERSIDAD AUTÓNOMA DEL ESTADO DE MÉXICO, 2020. http://hdl.handle.net/20.500.11799/109544.
Zaoui, Mohammed. "Etude experimentale de la combustion du charbon pulverise dans un four vertical a geometrie simplifiee suivi d'echangeurs, recherche des parametres de marche en fonction des differentes caracteristiques des combustibles et des parametres de conduite". Paris, ENMP, 1988. http://www.theses.fr/1988ENMP0107.
Santos, Jessé Baptista Veronese dos. "Influência nas características do escoamento em função da alteração da geometria do conduto a jusante de válvula tipo segmento invertida em sistema de enchimento e esvaziamento de eclusas de navegação". Universidade do Vale do Rio dos Sinos, 2012. http://www.repositorio.jesuita.org.br/handle/UNISINOS/3268.
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Este trabalho apresenta um estudo de comportamento fluidodinâmico na operação de válvula do tipo segmento invertida, utilizadas em sistemas de enchimento e esvaziamento de navegação de eclusas. Nesta pesquisa é verificada a influência da alteração geométrica no conduto a jusante da comporta. O objetivo principal é encontrar dentre alterações geométricas aquela que oferece melhores condições de operação, isto é, minimizando os efeitos nocivos provocados pelas baixas pressões. O estudo é realizado através de abordagem numérica (CFD -Computer Fluid Dynamics), com o software comercial ANSYS-CFX, utilizando-se as equações da conservação da massa e quantidade de movimento como modelo básico. Foram simulados 3 comprimentos de expansão (Lexp = 0,3, 0,6 e 0,9 m) no teto a jusante da comporta, mantendo a mesma inclinação (1E:10 Lexp, onde E é a elevação do teto). Para cada comprimento de expansão foram simuladas 3 vazões (Q) e 3 aberturas (a), totalizando 27 simulações.As comparações entre os resultados numéricos para as expansões propostas são realizadas a partir do modelo numérico (original) já validado em trabalhos publicados. Também são feitas análises de parâmetros, como: alterações geométricas, pressões mínimas, regiões do conduto submetidas à pressões críticas (negativas), recuperação da pressão, coeficientes de perda de carga e de contração. Estas análises permitiram observar qual a influência da expansão no escoamento, mostrando que a simulação numérica pode ser utilizada como de apoio na definição de novas geometrias a serem adotadas nos projetos de novas eclusas, bem como na avaliação de eclusas já existentes identificando condições de operação nocivas na região junto a comporta. Verifica-se neste trabalho que as alterações geométricas propostas não são capazes de resolverem os problemas relativos às pressões negativas, e que seu desempenho depende das condições operação (principalmente a vazão). Contudo, quanto maiores forem as vazões, maiores serão as pressões mínimas obtidas com a expansão para o teto. Espera-se que os resultados obtidos possam ser usados como base para projetos, visando à diminuição dos efeitos nocivos na válvula (como cavitação, vibrações, erosões, ruídos e esforços espasmódicos) e perturbações que danificam as embarcações, durante a operação dentro da eclusa.
This paper presents a study of fluid dynamic behavior in the operation of inverted Tainter gate, used in filling and emptying systems of navigation locks. In this research is verified the influence of geometric change in the conduit downstream of the gate. The main objective is to find among geometric changes one that offers the best operating condition, i.e., minimizing the harmful effects of low pressures. The study is conducted through numerical approach (CFD-Computer Fluid Dynamics) with the commercial software ANSYS-CFX, using the equations of conservation of mass and momentum as the basic model. Were simulated 3 expansion lengths (Lexp = 0.3, 0.6 and 0.9 m) in the roof of downstream gate, keeping the same slope (1E:10 Lexp, where E is the elevation of the roof). For each expansion length were three simulated stream flow (Q) and 3 openings (a), totaling 27 numerical simulations. Comparisons between the numerical results for the proposed expansions are made from the numerical model (original) previously validated in published works. Also analysis are made of parameters such as geometric changes, minimum pressures, the conduit regions undergoing critical pressures (negative) pressure recovery, pressure loss and contraction coefficients. This analysis allowed observing the influence of the expansion in the flow, showing that the numerical simulation can be used to support the definition of new geometries to be adopted in the design of new navigation locks, as well as evaluation of existing locks, identifying the harmful operating conditions in the region near the gate. It is verified in this work that the geometric changes proposed are not able to solve the problems relating to negative pressures, and its performance depends on operating conditions (mainly the flow). However, the higher the flow rate, the greater the pressures obtained with minimal expansion to the roof. It is hoped that the results obtained can be used as a basis for projects in order to reduce the harmful effects on the valve (as cavitation, vibration, erosion, noise and spasmodic efforts) and disorders that damage the vessels, while operating within the lock.
Sobral, Luís Filipe da Costa. "Estudo numérico de um escoamento laminar de um fluido newtoniano em condutas de secção não circular com curvatura de 90º". Master's thesis, 2013. http://hdl.handle.net/10216/72690.
Sobral, Luís Filipe da Costa. "Estudo numérico de um escoamento laminar de um fluido newtoniano em condutas de secção não circular com curvatura de 90º". Dissertação, 2013. http://hdl.handle.net/10216/72690.
Libri sul tema "Conduit geometry":
Descartes, René. Discours de la methode: Pour bien conduire sa raison, & chercher la verité dans les sciences : plus la dioptrique, les meteores et la geometrie qui sont des essais de cete methode. Lecce: Conte, 1987.
Descartes, René. Discours de la méthode: Pour bien conduire sa raison, & chercher la vérité dans les sciences ; Plus, La Dioptrique ; Les Météores ; et, La Géométrie ; qui sont des essais de cette méthode. Lecce: Università degli Studi di Lecce, Dipartimento di Filosofia, 1987.
Descartes, René. Discours de la méthode: Pour bien conduire sa raison, & chercher la vérité dans les sciences ; Plus, La Dioptrique ; Les Météores ; et, La Géométrie ; qui sont des essais de cette méthode. Lecce: Università degli Studi di Lecce, Dipartimento di Filosofia, 1987.
Descartes, René. Discours de la méthode: Pour bien conduire sa raison et chercher la vérité dans les sciences ; plus La dioptrique, Les météores et la géométrie qui sont des essais de cette méthode. Paris: Fayard, 1986.
Descartes, René. Discours de la méthode: Pour bein [sic] conduire sa raison et chercher la verité dans les sciences = Discourse on the method : of conducting one's reason well and of seeking the truth in the sciences : a bilingual edition and an interpretation of René Descartes' philosophy of method. Notre Dame: University of Notre Dame Press, 1994.
Paciorek, Andrew. Art for Mindfulness - Geometric Designs. Harper Thorsons, 2015.
Emam, Moataz H. Covariant Physics. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198864899.001.0001.
Discours de la methode pour bien conduire sa raison, et chercher la verité dans les sciences : plus la dioptrique, les meteores et la geometrie qui sont des essais de cete methode. - 1. edición. Fayard, 1986.
Capitoli di libri sul tema "Conduit geometry":
Blatnik, Matej, David C. Culver, Franci Gabrovšek, Martin Knez, Blaž Kogovšek, Janja Kogovšek, Hong Liu et al. "Deciphering Epiphreatic Conduit Geometry from Head and Flow Data". In Advances in Karst Science, 149–68. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-26827-5_8.
Auterives, Chrystelle, Stéphane Binet e Patrick Albéric. "Inferred Conduit Network Geometry from Geological Evidences and Water-Head in a Fluvio-Karstic System (Val D’Orleans, France)". In H2Karst Research in Limestone Hydrogeology, 49–58. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-06139-9_3.
Wilson, Lionel, e James W. Head. "Nature of Local Magma Storage Zones and Geometry of Conduit Systems Below Basaltic Eruption Sites: Pu'u 'O'o, Kilauea East Rift, Hawaii, Example". In Collected Reprint Series, 14785–92. Washington, DC: American Geophysical Union, 2014. http://dx.doi.org/10.1002/9781118782064.ch28.
Knura, Martin, e Jochen Schiewe. "Improvement of Task-Oriented Visual Interpretation of VGI Point Data". In Volunteered Geographic Information, 199–217. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-35374-1_10.
Badano, Luigi, e Denisa Muraru. "Functional anatomy of atria". In ESC CardioMed, a cura di Yen Ho, 88–92. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198784906.003.0017.
Furbish, David Jon. "Dimensional Analysis and Similitude". In Fluid Physics in Geology. Oxford University Press, 1997. http://dx.doi.org/10.1093/oso/9780195077018.003.0009.
Ioannides, Yannis M. "Social Interactions and Urban Spatial Equilibrium". In From Neighborhoods to Nations. Princeton University Press, 2012. http://dx.doi.org/10.23943/princeton/9780691126852.003.0005.
"Variable Geometry, Justice and Home Affairs and the Conduct of eu External Relations". In The EU as a Global Actor - Bridging Legal Theory and Practice, 337–61. Brill | Nijhoff, 2017. http://dx.doi.org/10.1163/9789004347175_016.
Queiroz, Kamila Fernanda F. da C., Marcus Costa de Araújo, Nadja Accioly Espíndola, Ladjane C. Santos, Francisco G. S. Santos e Rita de Cássia Fernandes de Lima. "Developing and Using Computational Frameworks to Conduct Numerical Analysis and Calculate Temperature Profiles and to Classify Breast Abnormalities". In Biomedical Computing for Breast Cancer Detection and Diagnosis, 230–49. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-3456-4.ch011.
Finney, John. "5. The anomalies explained". In Water: A Very Short Introduction, 77–91. Oxford University Press, 2015. http://dx.doi.org/10.1093/actrade/9780198708728.003.0005.
Atti di convegni sul tema "Conduit geometry":
Kim, Moon, Mingqiang Yi, Jihua Zhong, Haim H. Bau, Howard Hu e Suresh G. K. Ananthasuresh. "The Fabrication of Flow Conduits in Ceramic Tapes and the Measurement of Fluid Flow Through These Conduits". In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-1239.
Lee, Bong Joo, e J. R. Culham. "Effectiveness Analysis of Non-Mechanical Micro-Valvular Conduit in Single Phase Flow". In ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/icnmm2012-73045.
Shaffer, Nicholas, Francis Loth, Oliver Wieben, Brandon Rocque, Bermans Iskandar e John Oshinski. "Impedance to Cerebrospinal Fluid Flow in the Cervical Spinal Canal is Dominated by Geometric Complexity". In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53642.
Rhodes, Abby G., Matthew D. Covington e Joshua M. Blackstock. "UTILIZING CONSERVATIVE AND NON-CONSERVATIVE TRACERS TO ESTIMATE CONDUIT GEOMETRY: PRELIMINARY RESULTS FROM EXPERIMENTS AT SAVOY EXPERIMENTAL WATERSHED, NORTHWEST ARKANSAS (USA)". In GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-340801.
Hashemi, Saeed, e William Durfee. "Variable Hydraulic Transmission to Be Used in a Body-Powered Wearable Robot". In 2020 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/dmd2020-9063.
Fadl, Ahmed, Stefanie Demming, Zongqin Zhang, Stephanus Bu¨ttgenbach, Manfred Krafczyk e Donna M. L. Meyer. "A Valve-Less Rectification Minipump Based on Dynamic Rectifying Geometries". In ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels collocated with 3rd Joint US-European Fluids Engineering Summer Meeting. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-30821.
Osorio, Andres F., Alain J. Kassab, Eduardo A. Divo, I. Ricardo Argueta-Morales e William M. DeCampli. "Computational Fluid Dynamics Analysis of Surgical Adjustment of Ventricular Assist Device Implantation to Minimize Stroke Risk". In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12813.
Anayiotos, Andreas S., Pedro D. Pedroso, Ramakrishna Venugopalan, Evangelos Eleftheriou e Maria A. Advincula. "Flow Evaluation of a Compliant Coronary Artery Anastomosis Model". In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/bed-23123.
Ramiro Amorim, Andre, Felipe Oliveira Ribeiro, Rodrigo Klim Gomes, Peyman Asgari, Rodrigo Do Nascimento Carvalhal e Alexandre Rezende Diezel. "Gimbal Joint Riser – A Novel Concept: Experimental Hydrodynamic Coefficients". In ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/omae2023-103189.
Governo, André, e Bayindir H. Saracoglu. "Multidisciplinary Optimization of Radial Outflow Turbines With Highly Deformable Blades". In ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/gt2022-84333.
Rapporti di organizzazioni sul tema "Conduit geometry":
Danican(archived), Li. PR218-173602-R01 Assessment of Fitness-for-Service for Crack-within-Corrosion Anomalies. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), maggio 2020. http://dx.doi.org/10.55274/r0011675.
Harris, L. B., P. Adiban e E. Gloaguen. The role of enigmatic deep crustal and upper mantle structures on Au and magmatic Ni-Cu-PGE-Cr mineralization in the Superior Province. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328984.