Academic literature on the topic 'Dispersion à changement de phase'
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Journal articles on the topic "Dispersion à changement de phase"
Hurisse, Olivier, and Jean-Pierre Minier. "Modélisation stochastique dʼécoulements diphasiques avec changement de phase." Comptes Rendus Mécanique 339, no. 6 (June 2011): 418–31. http://dx.doi.org/10.1016/j.crme.2011.04.004.
Full textChammari, Ali, Betaboale Naon, Fabien Cherblanc, and Jean-Claude Bénet. "Transfert d'eau en sol aride avec changement de phase." Comptes Rendus Mécanique 331, no. 11 (November 2003): 759–65. http://dx.doi.org/10.1016/j.crme.2003.07.005.
Full textYang, Changhuei, Adam Wax, Irene Georgakoudi, Eugene B. Hanlon, Kamran Badizadegan, Ramachandra R. Dasari, and Michael S. Feld. "Interferometric phase-dispersion microscopy." Optics Letters 25, no. 20 (October 15, 2000): 1526. http://dx.doi.org/10.1364/ol.25.001526.
Full textYang, Changhuei, Adam Wax, Ramachandra R. Dasari, and Michael S. Feld. "Phase-dispersion optical tomography." Optics Letters 26, no. 10 (May 15, 2001): 686. http://dx.doi.org/10.1364/ol.26.000686.
Full textBRICARD, P., and L. FRIEDEL. "Two-phase jet dispersion." Journal of Hazardous Materials 59, no. 2-3 (April 1998): 287–310. http://dx.doi.org/10.1016/s0304-3894(97)00159-3.
Full textBarker, Steven A. "Matrix solid-phase dispersion." Journal of Chromatography A 885, no. 1-2 (July 2000): 115–27. http://dx.doi.org/10.1016/s0021-9673(00)00249-1.
Full textRobles, Francisco E., Lisa L. Satterwhite, and Adam Wax. "Nonlinear phase dispersion spectroscopy." Optics Letters 36, no. 23 (November 30, 2011): 4665. http://dx.doi.org/10.1364/ol.36.004665.
Full textPage, B. Richard. "The Germanic Verschärfung and Prosodic Change." Diachronica 16, no. 2 (December 31, 1999): 297–334. http://dx.doi.org/10.1075/dia.16.2.04pag.
Full textMounaix, P., S. Le Boiteux, M. Moustakim, R. Wunenburger, JP. Delville, and L. Sarger. "Suivi du changement de phase CO2supercritique par spectroscopie TeraHertz femtoseconde." Journal de Physique IV (Proceedings) 119 (November 2004): 243–44. http://dx.doi.org/10.1051/jp4:2004119077.
Full textCoret, M., S. Valance, R. Laniel, and J. Réthoré. "Étude mécanique d’un changement de phase allotropique à l’échelle mésoscopique." Matériaux & Techniques 97 (2009): 81–87. http://dx.doi.org/10.1051/mattech/2010014.
Full textDissertations / Theses on the topic "Dispersion à changement de phase"
O'Neill, Poppy. "Phase change dispersions as high performance heat transfer fluids." Electronic Thesis or Diss., Lyon, INSA, 2022. http://www.theses.fr/2022ISAL0073.
Full textThis thesis focuses on the heat transfer, transport, and rheological behaviour of novel two-phase fluids, named phase change dispersions. Phase change dispersions consist of phase change material dispersed into a continuous phase with the aid of surfactants. The optimal formulation procedure for phase change dispersions with high stabilities, low supercooling degrees and high apparent specific heat capacities is discussed and an innovative approach in fine-tuning the thermophysical properties of phase change dispersions with the use of cosurfactants is defined. Two of the developed formulations were then chosen for a heat transfer and rheological behaviour comparison to observe the effect that surfactants have on the transport and heat transfer properties during heating. This was performed using a test-rig to measure the bulk fluid and inner wall temperatures of the phase change dispersions flowing through a cylindrical tube under the constant heat flux boundary condition. The crystallisation heat transfer and rheological behaviour of a phase change dispersion was also examined through calculation of heat balances in a rectangular duct. During melting and crystallisation, an interesting phenomenon was discovered, that the transition from laminar to turbulent with phase change dispersions was much lower than those predicted for Newtonian fluids. By regression of the experimental results, correlations for the average Nusselt numbers for laminar and turbulent flow are presented, using a modified Reynolds number and a Prandtl number correction factor. A numerical model for the thermal behaviour studies of a phase change dispersion during its cooling in laminar flow through a rectangular duct was developed and is based on the quasi-homogeneous single fluid approach. The evolution of the experimental and theoretical values shows good agreement and the model satisfactorily predicts the behaviour, with variations of less than 5%
Ben, Ettouil Fadhel. "Modélisation rapide du traitement de poudres en projection par plasma d'arc." Phd thesis, Université de Limoges, 2008. http://tel.archives-ouvertes.fr/tel-00345752.
Full textLe procédé de projection par plasma d'arc soufflé et les principaux phénomènes qui régissent la formation du jet de plasma, les échanges thermiques et dynamiques entre la particule et l'écoulement du jet gazeux et la construction du dépôt sont examinés. Nous avons fait une étude bibliographique des modèles développées par ailleurs pour simuler les différentes fonctionnalités du procédé.
Les fondements et les caractéristiques du logiciel « Jets&Poudres » sont exposés, avant de présenter le modèle du transfert plasma-particule qui prend en compte la conduction interne à la particule et les déplacements des fronts de changement de phase. Dans ce modèle le calcul de l'évaporation de la particule est découplé du problème de la dynamique du gaz dans le jet et nous exploitons les résultats de J. C. Knight et le modèle de « Pression en retour » (Back Pressure) qu'il a développé. Une étude qualitative est consacrée à l'effet des paramètres de dispersion de la poudre en sortie de l'injecteur sur le traitement d'une particule isolée et sur la construction du dépôt. Ces effets mis en évidences, nous exposons un modèle de transport d'un lot de particules représentatif d'une poudre dans l'injecteur afin d'évaluer la dispersion en masse, taille et vitesse avant l'entrée dans le jet. Ce modèle complexe prend ent compte les collisions particule-parois et les colisions binaires particule- particule.
Les résultats de ces deux modèles sont discutés. Le traitement dynamique et thermique de la particule isolée est en bon accord avec ceux de la littérature. Ce qui autorise l'étude des conditions opératoires et des paramètres des différentes composantes fonctionnelles du procédé (torche, gaz plasmagène, injecteur, poudre...) sur le traitement des particules et leurs histoires thermique et dynamique.
Le modèle a été utilisé pour évaluer la quantité de matière nanostructurée conservée en fin de traitement et avant impact sur le substrat. Nous avons également exploité le modèle de dispersion de poudre pour la simuler la tache-dépôt formée par la projection ‘statique' de poudres de différents matériaux et de différentes granulométries.
Galambos, Paul C. "Two-phase dispersion in micro-channels /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/7100.
Full textSin, Vai Kuong. "Particle dispersion in two-phase turbulent flows." Thesis, University of Macau, 2000. http://umaclib3.umac.mo/record=b1637076.
Full textChahine, Rebecca. "Ingénierie aux échelles nanométriques de matériaux chalcogénures à changement de phase pour les mémoires à changement de phase du futur." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALY058.
Full textIn terms of performance, cost and functional speed, phase-change memories are playing a key role in data storage technologies. Leveraging the properties of some chalcogenide materials, phase-change materials (PCMs) present unique features, mainly: fast and reversible switching between amorphous and crystalline states with significant optical and electrical contrasts between the both states. However, for an improved performance, the elevated power consumption due to the high programming current must be reduced, and the crystallization temperature also has to be increased. In this context, we have developed new multilayer systems of [GeTe/C]n and [Ge2Sb2Te5/C]n. The aim is to obtain, in a controlled and reproducible manner, a thin layer of nanostructured PCM with dimensions less than 10 nm. The multilayers were produced by the magnetron sputtering deposition technique in a 200 mm industrial equipment with a multi-cathode chamber. The multilayers are amorphous after deposition. Ion beam techniques permitted to check periodicity and composition of the multilayers. The sheet resistance and reflectivity as a function of temperature were measured in situ. The crystallization temperature of PCM in the multilayer structure increases and is dependent on the thickness of the PCM layer and that of the carbon films. The kinetics and magnitude of the amorphous-crystal transition of PCM in the multilayers are also significantly affected. The impact of the multilayer structure on the crystallization of GeTe versus Ge2Sb2Te5 is then compared and discussed with respect to their crystallization mechanism. We show that the initially amorphous multilayer structure is retained even after PCM crystallization during an annealing that is identical to the one used for the manufacture of memory devices (300 °C for 15 min). Thus, it is possible to obtain nanocrystalline grains of PCM in amorphous C on the order of 4 nm vertically and 20-30 nm in the layer plane. These results are compared with the microstructure of C-doped GeTe and Ge2Sb2Te5 films. Finally, by using X-ray diffraction measurements in the laboratory and by in situ experiments at the SOLEIL synchrotron, we were able to follow the evolution of the structure of these multilayers during annealing. For example, we reported that a local percolation effect of the GeTe grains between the layers of C occurs above a certain temperature
Deshpande, Kiran B. "Studies On Phase Inversion." Thesis, Indian Institute of Science, 2001. http://hdl.handle.net/2005/285.
Full textErcan, Cemal. "Gas phase dispersion in mobile bed and spray contacting." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74224.
Full textThe ADPF model was found to represent well the residence time distribution curves for all experiments with both gas-liquid contactors. Comprehensive correlations were obtained as axial dispersion number, D/u$ sb{ rm G}$d$ sb{ rm p}$, for MBC; as dispersion length, D/u$ sb{ rm G}$, for spray contacting.
For spray contacting, gas dispersion length increases strongly with liquid flow rate but varies little with gas flow rate and column height.
For MBC, axial dispersion number is very sensitive to packing size and to liquid flow rate, but has low dependence on static bed height and gas flow rate. Axial dispersion number is linearly proportional to liquid holdup, with this proportionality a weak function of only static bed height. The trends in axial dispersion number with operating variables for MBC parallel those for countercurrent gas-liquid flow in fixed bed contacting (FBC), but with the much higher throughputs possible with MBC than in FBC, axial dispersion number is typically about one order of magnitude higher.
In both contactors the effect of axial dispersion on mass transfer is demonstrated to be very important at high recovery level. A comprehensive analysis of hydrodynamics and mass transfer in MBC is presented.
For the model of transient response of mass transfer between two fluid phases, both in axially dispersed countercurrent flow, moment equations were derived for the general case and for one special case. These moment derivations provide the needed theoretical framework for future experimental investigation of the degree of interaction between coefficients of mass transfer and of axial dispersion.
Avramopoulos, Hercules. "Phase effects in dispersion compensated passively mode-locked lasers." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47342.
Full textSoupart-Caron, Adèle. "Stockage de chaleur dans les matériaux à changement de phase." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAI078/document.
Full textThis PhD thesis deals with the understanding of the heat transfer mechanisms and with the development of thermal energy storage system for the industrial waste heat recovery application. The use of Phase Change Materials (PCM) is attractive for its high storage density and its possibility to deliver heat at constant temperature. However, the PCM low thermal conductivity leads to develop heat transfer improvement methods, such as heat exchangers with increased heat transfer surface. The goal is to characterize the behavior of such heat exchangers An experimental study, where four several heat exchangers have been tested with different orientations (horizontal/vertical) and injection types (upward/downward), highlighted the impact of natural convection during the melting process and the volume contraction one during the solidification. These results have been validated through a 3D numerical model. A performance comparison method based on an energy calculation through an experimental mesh is proposed and enables to select a heat exchanger on criteria such as the storage density, the characteristic time and the cost. Three PCM, adapted to our application, have been tested at the intended temperature (100-200 °C) by integrating them into a storage system made of a stainless steel tube with aluminum circular fins. Their ability to resist to repeated cycles has been assessed and their behavior has been compared. The salts mixture, H105 (Tmelting = 122 °C), is not selected for the application because of it low storage density (≈ 56 kWh/m3) and its large melting area. The sebacic acid (Tmelting = 132 °C) has a repeatable behavior with cycles and a higher storage density (≈ 66 kWh/m3) and is appropriate as storage material. The sugar alcohol, erythritol (Tmelting = 118 °C), has good thermo-physical properties (128 kWh/m3) but the crystallization control is a key point to use it as a PCM
Valance, Stéphane. "Aspects mécaniques du changement de phase allotropique à l'échelle mésoscopique." Lyon, INSA, 2007. http://theses.insa-lyon.fr/publication/2007ISAL0101/these.pdf.
Full textThe prediction of the mechanical state of steel structures submit to thermo-mechanical loading must take into account consequences of allotropic phase change. Indeed, phase change induce, at least for steels, a mechanism of TRansformation Induced Plasticity (TRIP) leading to irreversible deformation even for loading less than elastic yield limit. Homogeneized analytical models generally fail to achieve a correct prediction for complex loading. In order to overcome these difficulties, we present a model achieving a sharper description of the phenomenon. The mesoscopic working scale we adopt here is the grain scale size. Hence, we consider that the behaviour of each phase is homogenous in the sense of continuous media mechanic, whereas the front is explicitly described. We work both experimentally and numerically. Experimentally, we designed a test facility enabling thermo mechanical loading of the sample under partial vacuum. Acquisition of sample surface while martensitic transformation is happening leads, under some hypothesis and thanks to Digital Image Correlation, to the partial identification of area affected by transformation. Numerically, the eXtended Finite ElementMethod is applied for weakly discontinuous displacement fields. Used of this method needs to numerically track the transformation front -discontinuity support. In that goal, based on level set method, we develop FEM numerical scheme enabling recognition and propagation of discontinuity support. Finally, this work is complete by an approach of driving forces introduced through Eshelbian mechanics which are dual of front velocity. Keywords : allotropic phase change, TRansformation Induced Plasticity, eXtended Finite Element Method (X-FEM), Level set method
Books on the topic "Dispersion à changement de phase"
Kister, Henry Z. Equipment for distillation, gas absorption, phase dispersion, and phase separation. New York: McGraw-Hill, 2008.
Find full textPujala, Ravi Kumar. Dispersion Stability, Microstructure and Phase Transition of Anisotropic Nanodiscs. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04555-9.
Full textGreat Britain. Health and Safety Executive., ed. Flashing liquid jets and two-phase dispersion: A review. Sudbury: HSE Books, 2002.
Find full textKister, Henry Z. Perry's chemical engineers' handbook: Equipment for distillation, gas absorption, phase dispersion, and phase separation. 8th ed. [New York]: McGraw-Hill, 2008.
Find full textMols, Bernard Marie. Particle dispersion and deposition in horizontal turbulent channel and tube flows =: Dispersie en depositie van deeltjes in horizontale, turbulente, kanaal- en buisstromingen. Delft: Delft University Press, 1999.
Find full textHall, R. C. Dispersion of releases of hazardous materials in the vicinity of buildings: Phase 11 - CFD modelling. Sudbury: HSE Books, 1997.
Find full textBarry, John Willard. Work plan--Bacillus thuringiensis: Drift/dispersion and effects on non-target Lepidoptera, Utah 1993 : phase III. Davis, Calif: USDA Forest Service, Forest Pest Management, 1993.
Find full textMikkelsen, T. Project WIND, Phase IV, Dispersion Study: Aerial smoke plume obsrvatons and survace layer turbulence measuremens, part 1. Roskilde: Riso Library, 1989.
Find full text1976-, Chen Yiran, ed. Nonvolatile memory design: Magnetic, resistive, and phase change. Boca Raton, FL: Taylor & Francis, 2012.
Find full textPassages, seuils, mutations. Pais: Ed. Dervy, 1996.
Find full textBook chapters on the topic "Dispersion à changement de phase"
Fannjiang, A. C. "Phase Diagram for Turbulent Dispersion." In Fluid Mechanics and Its Applications, 531–34. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5118-4_131.
Full textBruining, Hans. "Dispersion in Porous Media." In Upscaling of Single- and Two-Phase Flow in Reservoir Engineering, 173–99. London: CRC Press, 2021. http://dx.doi.org/10.1201/9781003168386-5.
Full textLee, Jae-Won, and Seung Ho Choi. "Improvements in Howling Margin Using Phase Dispersion." In Communication and Networking, 154–61. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-27201-1_18.
Full textAskeland, Donald R. "Dispersion Strengthening by Phase Transformation and Heat Treatment." In The Science and Engineering of Materials, 105–15. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-0443-2_11.
Full textAskeland, Donald R. "Dispersion Strengthening by Phase Transformation and Heat Treatment." In The Science and Engineering of Materials, 316–49. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4899-2895-5_11.
Full textAskeland, Donald R. "Dispersion Strengthening by Phase Transformation and Heat Treatment." In The Science and Engineering of Materials, 126–34. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-009-1842-9_11.
Full textPujala, Ravi Kumar. "Phase Diagram of Aging Laponite Dispersions." In Dispersion Stability, Microstructure and Phase Transition of Anisotropic Nanodiscs, 37–51. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04555-9_3.
Full textPujala, Ravi Kumar. "Phase Diagram of Aging Montmorillonite Dispersions." In Dispersion Stability, Microstructure and Phase Transition of Anisotropic Nanodiscs, 67–82. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04555-9_5.
Full textWazumi, Koichiro, Joji Shinohara, Tsumoru Fujii, Shozou Kochi, Yuhichi Imagawa, and Yuh Shiohara. "Dispersion of Y2O3 with Y123 Phase Under Microgravity Condition." In Advances in Superconductivity IX, 697–700. Tokyo: Springer Japan, 1997. http://dx.doi.org/10.1007/978-4-431-68473-2_11.
Full textCahill, P. A., and K. D. Singer. "Chemistry of Anomalous-Dispersion Phase-Matched Second Harmonic Generation." In ACS Symposium Series, 200–213. Washington, DC: American Chemical Society, 1991. http://dx.doi.org/10.1021/bk-1991-0455.ch012.
Full textConference papers on the topic "Dispersion à changement de phase"
Haubois, Xavier, Sylvestre Lacour, Guy S. Perrin, Roderick Dembet, Pierre Fedou, Frank Eisenhauer, Karine Rousselet-Perraut, Christian Straubmeier, Antonio Amorim, and Wolfgang Brandner. "Phase tracking with differential dispersion." In SPIE Astronomical Telescopes + Instrumentation, edited by Jayadev K. Rajagopal, Michelle J. Creech-Eakman, and Fabien Malbet. SPIE, 2014. http://dx.doi.org/10.1117/12.2056410.
Full textHonsinger, C. "Data embedding using phase dispersion." In IEE Seminar on Secure Images and Image Authentication. IEE, 2000. http://dx.doi.org/10.1049/ic:20000216.
Full textKowalczyk, Tony C., Kenneth D. Singer, and Paul A. Cahill. "Anomalous-dispersion-enhanced Cerenkov phase matching." In SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, edited by Gustaaf R. Moehlmann. SPIE, 1993. http://dx.doi.org/10.1117/12.165270.
Full textEscoto, Esmerando, Ayhan Tajalli, Janne Hyyti, Tamas Nagy, and Gunter Steinmeyer. "Improved phase retrieval for dispersion scan." In 2017 Conference on Lasers and Electro-Optics Europe (CLEO/Europe) & European Quantum Electronics Conference (EQEC). IEEE, 2017. http://dx.doi.org/10.1109/cleoe-eqec.2017.8086489.
Full textBergkoetter, Matthew D., and James R. Fienup. "Phase Retrieval with Linear Chromatic Dispersion." In Computational Optical Sensing and Imaging. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/cosi.2016.ct4c.5.
Full textJiang, Xue, Jiayi Chen, Xingzhao Liu, and Abdelhak M. Zoubir. "Phase-only Robust Minimum Dispersion Beamforming." In ICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2019. http://dx.doi.org/10.1109/icassp.2019.8683306.
Full textWakayama, Toshitaka, Hiroyuki Kowa, Yukitoshi Otani, Norihiro Umeda, and Toru Yoshizawa. "Birefringence dispersion measurement by geometric phase." In Optomechatronic Systems III, edited by Toru Yoshizawa. SPIE, 2002. http://dx.doi.org/10.1117/12.467709.
Full textKumar, Prem, Ruo-Ding Li, William L. Kath, and J. Nathan Kutz. "Dispersion compensation with phase-sensitive amplifiers." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1993. http://dx.doi.org/10.1364/oam.1993.wb.3.
Full textZacharopoulos, Ioannis, Ioannis Tomkos, and Dimitrios Syvridis. "Optimization of dispersion-shifted fiber phase conjugator including zero dispersion wavelength variation." In Optoelectronics '99 - Integrated Optoelectronic Devices, edited by Peter Blood, Akira Ishibashi, and Marek Osinski. SPIE, 1999. http://dx.doi.org/10.1117/12.356870.
Full textZeng, Xie, Haifeng Hu, Yongkang Gao, Dengxin Ji, Nan Zhang, Haomin Song, Kai Liu, and Qiaoqiang Gan. "Phase change dispersion of plasmonic nano-objects." In CLEO: Applications and Technology. Washington, D.C.: OSA, 2015. http://dx.doi.org/10.1364/cleo_at.2015.jtu5a.76.
Full textReports on the topic "Dispersion à changement de phase"
Wong, J., D. Clatterbuck, F. Occelli, D. Farber, A. Schwartz, M. Wall, C. Boro, et al. Phonon dispersion curves determination in (delta)-phase Pu-Ga alloys. Office of Scientific and Technical Information (OSTI), February 2006. http://dx.doi.org/10.2172/928180.
Full textBiltoft, Christopher A. Phase 1 of Defense Special Weapons Agency Transport and Dispersion Model Validation. Fort Belvoir, VA: Defense Technical Information Center, July 1997. http://dx.doi.org/10.21236/ada342170.
Full textMcKinney, Jason D., and John Diehl. Measurement of Chromatic Dispersion using the Baseband Radio-Frequency Response of a Phase-Modulated Analog Optical Link Employing a Reference Fiber. Fort Belvoir, VA: Defense Technical Information Center, September 2007. http://dx.doi.org/10.21236/ada472284.
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