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Modelisation Du Rayonnement Et Transferts Couples Dans Des Milieux Poreux Reactifs
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Book Synopsis Modélisation du transfert couple rayonnement - convection au sein de matériaux poreux et identification de leurs propriétés radiatives by : Geneviève Uny
Download or read book Modélisation du transfert couple rayonnement - convection au sein de matériaux poreux et identification de leurs propriétés radiatives written by Geneviève Uny and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail comporte deux parties. Dans la première, une modélisation des transferts couplés par convection, conduction et rayonnement, au sein d'un milieu poreux semi-transparent confiné dans une cavité inclinable chauffée différentiellement est proposée. Le transfert radiatif est évalué par un modèle gris à deux-flux, les mouvements de convection dans le milieu poreux étant modélisés sur la base de l'hypothèse de BOUSSINESQ et de la loi de DARCY. Les équations sont résolues à partir d'un schéma de différences finies. Des résultats numériques sont présentés pour des laines de verre dont les paramètres radiatifs sont déterminés expérimentalement. La détermination expérimentale des' coefficients d'absorption, de diffusion d'un paramètre caractérisant la forme de la fonction de phase, de laines de verre, constitue la deuxième partie de ce travail. Ces coefficients sont obtenus à partir d'une méthode d'optimisation dans laquelle des mesures de transmittance sont comparées avec les valeurs théoriques correspondantes calculées à partir d'un modèle de transfert radiatif basé sur la méthode des ordonnées discrètes et la fonction de phase d'HENYEY-GREENSTEIN. Ces mesures de transmittance spectrale, bidirectionnelle ou unidirectionnelle, ont été effectuées sur un dispositif mis au point dans le cadre de ce travail. Elles ont permis de déterminer les paramètres radiatifs pour des longueurs d'onde comprises entre 2μm et 10,5μm. Ces valeurs ont été compares aux résultats de la théorie de MIE et l'influence de la température sur ces paramètres étudiée pour une gamme de températures comprises entre 20°C et 400°C
Book Synopsis MODELISATION DES PHENOMENES DE TRANSFERT ET DE REACTIONS DANS DES MILIEUX HETEROGENES COMPLEXES by : FRANTISEK.. STEPANEK
Download or read book MODELISATION DES PHENOMENES DE TRANSFERT ET DE REACTIONS DANS DES MILIEUX HETEROGENES COMPLEXES written by FRANTISEK.. STEPANEK and published by . This book was released on 2000 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE TRAVAIL PORTE SUR LA SIMULATION NUMERIQUE DE SYSTEMES REACTIFS AVEC TRANSITION DE PHASE LIQUIDE-VAPEUR DANS DES MILIEUX POREUX. LES METHODES POUR LA RECONSTRUCTION ET LA CARACTERISATION DE MILIEUX POREUX SONT D'ABORD INTRODUITES. UNE METHODE NUMERIQUE POUR LA SIMULATION DE LA PROPAGATION D'INTERFACES LIBRES DANS UN MILIEU POREUX EST ENSUITE PRESENTEE. TROIS APPLICATIONS PRINCIPALES SONT CONSIDEREES : LA SIMULATION DE LA CONDENSATION CAPILLAIRE DANS UN MILIEU POREUX, LA MODELISATION DE LA CROISSANCE DES BULLES DE GAZ DANS DES PARTICULES POREUSES SATUREES PAR UN LIQUIDE, ET LE MOUILLAGE INTERNE D'UNE PARTICULE POREUSE QUI SERT DE SUPPORT A UN CATALYSEUR. ENSUITE, LE PROBLEME DE LA CONCEPTION OPTIMALE D'UN RESEAU DE CANAUX CONTENANT DES SEGMENTS FONCTIONNELS - POUR EFFECTUER SIMULTANEMENT LA REACTION CHIMIQUE ET LA SEPARATION DE PRODUITS - EST CONSIDERE. QUELQUES REMARQUES CONCERNANT L'AVENIR DE LA MODELISATION MESOSCOPIQUE EN GENIE CHIMIQUE TERMINENT CE TRAVAIL.
Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Download or read book Satellite Situation Report written by and published by . This book was released on 1978-06-30 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Management of Radioactive Wastes from the Nuclear Fuel Cycle by :
Download or read book Management of Radioactive Wastes from the Nuclear Fuel Cycle written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Vortex Dominated Flows by : Denis L. Blackmore
Download or read book Vortex Dominated Flows written by Denis L. Blackmore and published by World Scientific. This book was released on 2005 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: Honoring the contributions of one of the field's leading experts, Lu Ting, this indispensable volume contains important new results at the cutting edge of research. A wide variety of significant new analytical and numerical results in critical areas are presented, including point vortex dynamics, superconductor vortices, cavity flows, vortex breakdown, shock/vortex interaction, wake flows, magneto-hydrodynamics, rotary wake flows, and hypersonic vortex phenomena.The book will be invaluable for those interested in the state of the art of vortex dominated flows, both from a theoretical and applied perspective.Professor Lu Ting and Joe Keller have worked together for over 40 years. In their first joint work entitled ?Periodic vibrations of systems governed by nonlinear partial differential equations?, perturbation analysis and bifurcation theory were used to determine the frequencies and modes of vibration of various physical systems. The novelty was the application to partial differential equations of methods which, previously, had been used almost exclusively on ordinary differential equations. Professsor Lu Ting is an expert in both fluid dynamics and the use of matched asymptotic expansions. His physical insight into fluid flows has led the way to finding the appropriate mathematical simplications used in the solutions to many difficult flow problems.
Book Synopsis Instabilities in Multiphase Flows by : A. Berlemont
Download or read book Instabilities in Multiphase Flows written by A. Berlemont and published by . This book was released on 2014-01-15 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flexoelectricity in Liquid Crystals by : Agnes Buka
Download or read book Flexoelectricity in Liquid Crystals written by Agnes Buka and published by World Scientific. This book was released on 2013 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.
Book Synopsis Parallel Computing by : Barbara Chapman
Download or read book Parallel Computing written by Barbara Chapman and published by IOS Press. This book was released on 2010 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: From Multicores and GPUs to Petascale. Parallel computing technologies have brought dramatic changes to mainstream computing the majority of todays PCs, laptops and even notebooks incorporate multiprocessor chips with up to four processors. Standard components are increasingly combined with GPUs Graphics Processing Unit, originally designed for high-speed graphics processing, and FPGAs Free Programmable Gate Array to build parallel computers with a wide spectrum of high-speed processing functions. The scale of this powerful hardware is limited only by factors such as energy consumption and thermal control. However, in addition to"
Book Synopsis Diffusion in Materials - DIMAT 2011 by : Igor Bezverkhyy
Download or read book Diffusion in Materials - DIMAT 2011 written by Igor Bezverkhyy and published by Trans Tech Publications Ltd. This book was released on 2012-04-12 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Conference on Diffusion in Materials (DIMAT) is the benchmark conference series for diffusion in solids. DIMAT 2011 was organized by the University of Bourgogne in association with CNRS, Dijon (France). The conference showcased new results concerning theoretical tools as well as applied research approaches. Diffusion processes affect all types of materials: nanomaterials, materials for energy, metallurgy, glasses and ceramics, but each requires its own numerical tools. Volume is indexed by Thomson Reuters CPCI-S (WoS). This volume comprises most of the contributions presented at DIMAT 2011: 4 plenary lectures delivered by famous high-level scientists plus 88 contributions in the form of keynote lectures, talks and posters.
Download or read book Space Debris written by Heiner Klinkrad and published by Springer Science & Business Media. This book was released on 2006-09-01 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: The future evolution of the debris environment will be forecast on the basis of traffic models and possible hazard mitigation practices. The text shows how large trackable objects will have re-entry pinpointed and predictions made on related risk assessment for possible ground impact. Models will also be described for meteoroids which are also a prevailing risk.
Download or read book Modelling Fluid Flow written by János Vad and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modelling Fluid Flow presents invited lectures, workshop summaries and a selection of papers from a recent international conference CMFF '03 on fluid technology. The lectures follow the current evolution and the newest challenges of the computational methods and measuring techniques related to fluid flow. The workshop summaries reflect the recent trends, open questions and unsolved problems in the mutually inspiring fields of experimental and computational fluid mechanics. The papers cover a wide range of fluids engineering, including reactive flow, chemical and process engineering, environmental fluid dynamics, turbulence modelling, numerical methods, and fluid machinery.
Book Synopsis Nonlinear Optical Materials by : Jerome V. Moloney
Download or read book Nonlinear Optical Materials written by Jerome V. Moloney and published by Springer Science & Business Media. This book was released on 1998-08-13 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical methods play a significant role in the rapidly growing field of nonlinear optical materials. This volume discusses a number of successful or promising contributions. The overall theme of this volume is twofold: (1) the challenges faced in computing and optimizing nonlinear optical material properties; and (2) the exploitation of these properties in important areas of application. These include the design of optical amplifiers and lasers, as well as novel optical switches. Research topics in this volume include how to exploit the magnetooptic effect, how to work with the nonlinear optical response of materials, how to predict laser-induced breakdown in efficient optical devices, and how to handle electron cloud distortion in femtosecond processes.
Book Synopsis Scientific Canadian Mechanics' Magazine and Patent Office Record by : Canada. Patent Office
Download or read book Scientific Canadian Mechanics' Magazine and Patent Office Record written by Canada. Patent Office and published by . This book was released on 1966-03 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Disposal of Radioactive Wastes Into the Ground by :
Download or read book Disposal of Radioactive Wastes Into the Ground written by and published by . This book was released on 1967 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
