Download or read book Transmission de la chaleur dans les milieux granulaires written by Gérard Donnadieu and published by . This book was released on 1961 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transmission de la chaleur dans les milieux granulaires written by Gérard Donnadieu and published by . This book was released on 1961 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat Transfer and Fluid Flow in Nuclear Systems written by Henri Fenech and published by Elsevier. This book was released on 2013-10-22 with total page 591 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat Transfer and Fluid in Flow Nuclear Systems discusses topics that bridge the gap between the fundamental principles and the designed practices. The book is comprised of six chapters that cover analysis of the predicting thermal-hydraulics performance of large nuclear reactors and associated heat-exchangers or steam generators of various nuclear systems. Chapter 1 tackles the general considerations on thermal design and performance requirements of nuclear reactor cores. The second chapter deals with pressurized subcooled light water systems, and the third chapter covers boiling water reactor systems. Chapter 4 tackles liquid metal cooled systems, while Chapter 5 discusses helium cooled systems. The last chapter deals with heat-exchangers and steam generators. The book will be of great help to engineers, scientists, and graduate students concerned with thermal and hydraulic problems.
Download or read book Analysis and Optimization of Systems written by A. Bensoussan and published by Springer. This book was released on 2006-01-20 with total page 895 pages. Available in PDF, EPUB and Kindle. Book excerpt: INRIA, Institut National de Recherche en Informatique et en Automatique
Download or read book Dispersion thermique dans des milieux granulaires written by Amélie Testu and published by . This book was released on 2005 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le transfert de chaleur dans un milieu granulaire traversé par un fluide est appelé dispersion thermique. Celle-ci résulte d'une combinaison des transferts diffusif et convectif de la chaleur. La maîtrise de la dispersion thermique est essentielle lorsqu'on effectue des réaction chimiques en catalyse hétérogène fortement endo ou exothermique. Dans ce type de situation il est en effet primordial de contrôler la conversion chimique et/ou la durée de vie d'un catalyseur. Ce travail concerne la caractérisation expérimentale de la dispersion thermique dans les milieux granulaires, d'abord à cœur puis en proche paroi. Dans la première partie du travail, un banc constitué d'une enceinte parallélépipédique remplie d'un milieu granulaire (bille de verre ou grains de support de catalyseur) a été construit. Il est traversé par un écoulement d'air assuré par un ventilateur situé en aval du banc. Le lit est chauffé par effet Joule (échelon temporel) grâce à un fil métallique perpendiculaire à l'écoulement. La réponse transitoire en température est mesurée par plusieurs thermocouples. Une technique d'inversion spécifique permet d'estimer les deux coefficients de dispersion thermique. Des corrélations expérimentales, basées sur une analyse dimensionnelle, ont été établies pour expliquer les variations avec la vitesse des coefficients de dispersion longitudinal et transverse. Celles-ci découlent de nos mesures sur les systèmes billes de verre/air et support de catalyseur azote (l'azote sec permet de s'affranchir des problèmes d'hygrophilie des grains qui sont eux-mêmes dotés d'une microporosité interne). Le dernier volet de ce mémoire concerne l'étude des effets thermiques en proche paroi (effets liés aux survitesses). Un nouveau banc expérimental, avec chauffage par une résistance pelliculaire plane implantée sur la paroi et thermocouples insérés dans le milieu granulaire, a été mis en place et une campagne de mesure a permis de mettre en évidence les effets de paroi. Un nouveau modèle analytique, qui doit permettre des simulation de dispersion sur un lit composé de deux couches (à cœur et en proche paroi), a également été développé
Download or read book ETUDE THEORIQUE ET EXPERIMENTALE DES TRANSFERTS THERMIQUES DANS LES MILIEUX GRANULAIRES written by SAMIR.. ZEGADI and published by . This book was released on 1997 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'OBJECTIF MAJEUR DE CETTE RECHERCHE EST L'ETUDE ET LA MODELISATION DE LA CONDUCTIVITE THERMIQUE DES MATERIAUX GRANULAIRES UTILISES DANS LE BATIMENT COMME ISOLANT ; A CETTE EFFET NOUS AVONS CHOISI COMME SUPPORT EXPERIMENTAL LES BILLES DE VERRE EXPANSE ET LES BILLES D'ARGILE EXPANSEE. LES CONDUCTIVITES THERMIQUES ONT ETE MESUREES EN REGIME STATIONNAIRE PAR LA METHODE DITE METHODE DES BOITES QUI A ETE DEVELOPPEE AU LABORATOIRE D'ETUDES THERMIQUES ET SOLAIRES DE L'UNIVERSITE CLAUDE BERNARD DE LYON. D'AUTRE PART, UNE NOUVELLE METHODE DE MESURE DE LA CONDUCTIVITE THERMIQUE A BASSE TEMPERATURE A ETE CONCUE ET MISE EN UVRE. NOUS AVONS PROPOSE UNE MODELISATION DES TRANSFERTS THERMIQUES DANS LES MILIEUX GRANULAIRES ; CELLE CI REPOSE SUR LA COMBINAISON DE DEUX MODES DE TRANSFERT, LE PREMIER TENANT COMPTE DES PHENOMENES DE CONDUCTION PURE ET LE SECOND SUR LE TRANSFERT RADIATIF DANS LE VIDE INTERGRANULAIRE. UNE HYPOTHESE A ETE VERIFIEE CONCERNANT LA REPARTITION SERIE-PARALLELE DES STRATES DU MODELE RETENU, A SAVOIR QUE L'ON PEUT CONSERVER LA DISTRIBUTION RETENUE AVEC LES BILLES SEULES ET L'UTILISER POUR MODELISER LES TRANSFERTS LORSQUE LE VIDE INTERGRANULAIRE EST REMPLI D'EAU LIQUIDE, DE GLACE ET DE CIMENT. CECI NOUS A PERMIS D'APPORTER UNE CONTRIBUTION INTERESSANTE A LA MODELISATION THERMIQUE DES MILIEUX GRANULAIRES
Download or read book Sciences de la mati re et microgravit written by Dominique Langevin and published by . This book was released on 2001 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Control of Distributed Parameter Systems 1986 written by Herbert E. Rauch and published by Pergamon. This book was released on 1987 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increasing requirements for active control of large aerospace, chemical and mechanical systems have focused attention on recent research into the control of distributed parameter systems. The increasing capabilities in computation, instrumentation and actuators have made possible implementation of sophisticated control schemes based on this research. This volume represents state of the art reports on the theory and current and future applications, and should be considered essential reading for all those involved in the production of such systems.
Download or read book TRANSFERT DE CHALEUR EN REGIME STATIONNAIRE ET DYNAMIQUE A TRAVERS LES MILIEUX POREUX HUMIDES NON SATURES written by ADEL.. KALBOUSSI and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: L'OBJECTIF MAJEUR DE CETTE RECHERCHE EST L'ETUDE DU COMPORTEMENT THERMIQUE DES MATERIAUX POREUX UTILISES DANS LE BATIMENT COMME ISOLANTS SIMPLES OU PORTEURS: A CETTE FIN NOUS AVONS CHOISI DES ISOLANTS FIBREUX, GRANULAIRES ET ALVEOLAIRES REPRESENTATIFS DE TOUTE UNE GAMME DE MATERIAUX. EN REGIME THERMIQUE STATIONNAIRE, NOUS AVONS DEGAGE LES DIFFERENTES NOTIONS DE CONDUCTIVITE THERMIQUE CARACTERISANT LE TRANSFERT DE CHALEUR A TRAVERS UN MILIEU POREUX A SAVOIR: LES CONDUCTIVITES THERMIQUES POUR CONDUCTION PURE, PAR RAYONNEMENT INTERNE, PAR TRANSMISSION DE L'EAU POUR LES MILIEUX POREUX NON SATURES. NOUS AVONS CHERCHE SYSTEMATIQUEMENT A ANALYSER LA VALIDITE DES MESURES ET A LES COMPARER AUX PREVISIONS THEORIQUES QUE L'ON PEUT EN FAIRE. EN REGIME THERMIQUE DYNAMIQUE, NOUS AVONS ETUDIE L'INFLUENCE DE LA TENEUR EN EAU SUR LA DIFFUSIVITE THERMIQUE DES MILIEUX POREUX. EN INTRODUISANT UNE DIFFUSIVITE THERMIQUE D'UNE PAROI FICTIVE HOMOGENE EQUIVALENTE AYANT LE MEME COMPORTEMENT THERMODYNAMIQUE QU'UNE PAROI REELLE MULTICOUCHES, NOUS AVONS DEVELOPPE UNE APPROCHE THEORIQUE PERMETTANT L'HOMOGENEISATION DES COMPOSITES MULTICOUCHES. TOUTES LES MESURES JUSQU'ALORS DISPERSEES SUR PLUSIEURS APPAREILLAGES, ONT ETE REALISEES AVEC UNE SEULE CELLULE DE MESURE QUE NOUS AVONS CONCUE
Download or read book Heat Transfer in Fibrous Materials written by Claes G. Bankvall and published by . This book was released on 1972 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Union Catalog written by and published by . This book was released on 1978 with total page 1038 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes entries for maps and atlases.
Download or read book International Chemical Engineering written by and published by . This book was released on 1988 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low density cellular plastics written by N.C. Hilyard and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foams are gas filled integral structures in which the gas is finely dispersed throughout acontinuouslyconnected solid phase. The bulk density is usually substantially lower than that of the solid component, and for the foams which form the focus for this book the volume fraction of the gas phase is considerably greater than 0.5 and in most instances in excess of 0.9. Many ofthe materials encountered in every day experience, such as bread, plants and trees, structural materials for buildings, comfort materials for domestic and automotive seating, shock absorbers or car bumpers and materials for noise control, have one thing in common - the cellular nature of their physical structure. Whyare thesestructuressoimportantin the naturaland man-made world? The reasons are both technical and commercial. From a technical viewpoint cellular materials offer: 1. high specific stiffness and strength - making them suitable for structural applications; 2. closeto idealenergymanagement - hencetheir useinthermalandacoustic insulation, vibration damping, acoustic absorption and shock mitigation; and 3. comfort - hence their use for domestic and automotive seating.
Download or read book Faecal Sludge Management written by Linda Strande and published by IWA Publishing. This book was released on 2014-08-15 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized sanitation technologies for urban areas is gradually changing, and is increasingly being considered as long-term, sustainable options in urban areas, especially in low- and middle-income countries that lack sewer infrastructures. This is the first book dedicated to faecal sludge management. It compiles the current state of knowledge of the rapidly evolving field of faecal sludge management, and presents an integrated approach that includes technology, management, and planning based on Sandecs 20 years of experience in the field. Faecal Sludge Management: Systems Approach for Implementation and Operation addresses the organization of the entire faecal sludge management service chain, from the collection and transport of sludge, and the current state of knowledge of treatment options, to the final end use or disposal of treated sludge. The book also presents important factors to consider when evaluating and upscaling new treatment technology options. The book is designed for undergraduate and graduate students, and engineers and practitioners in the field who have some basic knowledge of environmental and/or wastewater engineering.
Download or read book Properties of UO2 written by J. Belle and published by . This book was released on 1957 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Terra 2008 written by Leslie Rainer and published by Getty Publications. This book was released on 2011-06-14 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthen architecture constitutes one of the most diverse forms of cultural heritage and one of the most challenging to preserve. It dates from all periods and is found on all continents but is particularly prevalent in Africa, where it has been a building tradition for centuries. Sites range from ancestral cities in Mali to the palaces of Abomey in Benin, from monuments and mosques in Iran and Buddhist temples on the Silk Road to Spanish missions in California. This volume's sixty-four papers address such themes as earthen architecture in Mali, the conservation of living sites, local knowledge systems and intangible aspects, seismic and other natural forces, the conservation and management of archaeological sites, research advances, and training.
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.
