Download or read book Etude de la propagation des ondes de choc dans des milieux diphasiques written by G. Parmentier and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Etude de la propagation des ondes de choc en milieu confin g om trie complexe written by Baptiste Julien and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: La sécurité des biens et des personnes est, de nos jours, une préoccupation première, en particulier lorsqu'elle concerne l'usage des explosifs. Afin de répondre à ces exigences de sécurité, il est nécessaire de pouvoir prédire le comportement des ondes de pression issues d'une explosion, que ce soit à l'intérieur ou à l'extérieur du bâtiment, et leur interaction avec leur environnement. Une importante quantité d'informations sur les ondes de choc se propageant en champ libre est disponible dans la littérature, de sorte que leur comportement est maintenant bien connu. Toutefois, il y a très peu de données disponibles en littérature ouverte sur les explosions en milieu confiné. Les travaux présentés dans ce mémoire de thèse s'inscrivent dans le cadre de l'étude du comportement des ondes de choc en milieu confiné multi-chambres et de l'effet de différents paramètres tels que le volume des cellules ou la largeur du couloir sur les profils de pression à l'intérieur d'un bâtiment. La propagation de l'onde de choc est analysée par l'évolution de certains paramètres du choc (temps d'arrivée, surpression maximale et impulsion positive).Plusieurs essais à échelle réduite ont été réalisés à l'aide d'une maquette modulable, représentative d'un bâtiment pyrotechnique de plein pied, composé de quatre pièces alignées et reliées entre elles par un couloir.
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1993 with total page 984 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Etude de la propagation des ondes de choc en milieu confin written by Kévin Gault and published by . This book was released on 2018 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: De nos jours, la sécurité des installations publiques, industrielles ou militaires est une problématique majeure. Les phénomènes de détonations en champ libre sont bien connus et documentés. Néanmoins les modèles et les lois mises en place ne s’appliquent pas dans le cas d’explosions confinées.Les travaux présentés dans ce mémoire de thèse portent sur l’étude de la propagation des ondes de choc dans des géométries simples et fermées. Différents paramètres ont été étudiés tels que l’influence du volume, de la position d’amorçage ou encore de la taille de l’évent.Les essais réalisés à petite échelle, dans deux maquettes expérimentales ont permis de mettre en place des lois prédictives portant sur les principaux paramètres de l’onde de choc incidente et réfléchie que sont la surpression maximale, le temps d’arrivée ainsi que l’impulsion.Ces lois ont ensuite été implémentées dans un code de calculs permettant d’automatiser la recherche des réflexions et des différents paramètres associés dans des configurations géométriques simples.
Download or read book Government Reports Annual Index written by and published by . This book was released on 1993 with total page 1300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ondes et mati re written by Pascal Bauer (professeur des universités).) and published by Ellipses Marketing. This book was released on 2015-05-26 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ouvrage est une présentation méthodique et rigoureuse des concepts de détonique et d'ondes de choc, ainsi que des outils de calculs afférents. Le livre développe séparément la propagation des ondes de choc dans les milieux gazeux et dans les matériaux solides (équations de propagation et de conservation, réflexion). Puis il décrit et analyse les caractéristiques et les propriétés des détonations, en insistant sur le lien entre les ondes de choc et la détonation. Enfin, dans une dernière partie il présente les outils numériques permettant de simuler les phénomènes hautement dynamiques. Des exercices d'applications et des problèmes de synthèse corrigés complètent et illustrent l'exposé. Le livre permet de s'approprier les concepts et les méthodes de calcul permettant de résoudre des problèmes pratiques, notamment ceux liés à la sécurité industrielle ou en relation avec de futurs systèmes de propulsion. [Source : 4e de couv.]
Download or read book Propagation d ondes dans les coulements diphasiques bulles deux constituants written by Jean-Claude Micaelli and published by . This book was released on 1982 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ETUDE THEORIQUE DES ONDES DE TAUX DE VIDE ET DE PRESSION (DE FAIBLE AMPLITUDE) SE PROPAGEANT DANS LES ECOULEMENTS DIPHASIQUES A BULLES EST EFFECTUEE A PARTIR DE MODELES HYBRIDES. CES MODELES, BATIS SUR LES EQUATIONS DE BILAN MOYENNEES POUR CHAQUE PHASE SONT ELABORES A L'AIDE DU TRAITEMENT STOCHASTIQUE DU COMPORTEMENT DE LA PHASE GAZEUSE. L'ETUDE EXPERIMENTALE DES MEMES ONDES EST EFFECTUEE GRACE A UN DISPOSITIF COMPORTANT NOTAMMENT UNE VEINE D'ESSAIS VERTICALE (EQUIPEE DE SONDES RESISTIVES - POUR LES MESURES DE TAUX DE VIDE - ET DE CAPTEUR DE PRESSION) ET UNE UNITE DE TRAITEMENT DU SIGNAL (TRANSFORMEE DE FOURIER, INTERSPECTRE). LES RESULTATS EXPERIMENTAUX ONT CONFIRME LES RESULTATS THEORIQUES
Download or read book Contribution l tude des ondes de choc et de d tente dans les gaz diatomiques written by Jean-Claude Loraud and published by . This book was released on 1975 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: INFLUENCE DE LA RELAXATION DE VIBRATION SUR DES GAZ EN ECOULEMENTS DETENDUS OU COMPRIMES DE DIVERSES FACONS. CE TRAVAIL DONNE DES SOLUTIONS PLUS EXACTES DE CERTAINS ECOULEMENTS (ONDES DE SOUFFLE, ONDE DE CHOC) ET CONTRIBUE A ETABLIR UNE METHODE DE CALCUL DES ECOULEMENTS DE GAZ POLYATOMIQUES: ON DONNE UN EXPOSE DE LA METHODE DES BICARACTERISTIQUES POUR LES MILIEUX HORS D'EQUILIBRE VIBRATOIRE ET UNE APPLICATION A LA PROPAGATION D'UNE ONDE DE CHOC DANS UN DIVERGENT
Download or read book Host Bibliographic Record for Boundwith Item Barcode 30112071188988 and Others written by and published by . This book was released on 2013 with total page 1276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Finite Volumes for Complex Applications IX Methods Theoretical Aspects Examples written by Robert Klöfkorn and published by Springer Nature. This book was released on 2020-06-09 with total page 727 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the 9th conference on "Finite Volumes for Complex Applications" (Bergen, June 2020) are structured in two volumes. The first volume collects the focused invited papers, as well as the reviewed contributions from internationally leading researchers in the field of analysis of finite volume and related methods. Topics covered include convergence and stability analysis, as well as investigations of these methods from the point of view of compatibility with physical principles. Altogether, a rather comprehensive overview is given on the state of the art in the field. The properties of the methods considered in the conference give them distinguished advantages for a number of applications. These include fluid dynamics, magnetohydrodynamics, structural analysis, nuclear physics, semiconductor theory, carbon capture utilization and storage, geothermal energy and further topics. The second volume covers reviewed contributions reporting successful applications of finite volume and related methods in these fields. The finite volume method in its various forms is a space discretization technique for partial differential equations based on the fundamental physical principle of conservation. Many finite volume methods preserve further qualitative or asymptotic properties, including maximum principles, dissipativity, monotone decay of free energy, and asymptotic stability, making the finite volume methods compatible discretization methods, which preserve qualitative properties of continuous problems at the discrete level. This structural approach to the discretization of partial differential equations becomes particularly important for multiphysics and multiscale applications. The book is a valuable resource for researchers, PhD and master’s level students in numerical analysis, scientific computing and related fields such as partial differential equations, as well as engineers working in numerical modeling and simulations.
Download or read book Microgravity Combustion written by Howard D. Ross and published by Elsevier. This book was released on 2001-09-03 with total page 601 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an introduction to understanding combustion, the burning of a substance that produces heat and often light, in microgravity environments-i.e., environments with very low gravity such as outer space. Readers are presented with a compilation of worldwide findings from fifteen years of research and experimental tests in various low-gravity environments, including drop towers, aircraft, and space.Microgravity Combustion is unique in that no other book reviews low- gravity combustion research in such a comprehensive manner. It provides an excellent introduction for those researching in the fields of combustion, aerospace, and fluid and thermal sciences.* An introduction to the progress made in understanding combustion in a microgravity environment* Experimental, theoretical and computational findings of current combustion research* Tutorial concepts, such as scaling analysis* Worldwide microgravity research findings
Download or read book INIS Atomindeks written by and published by . This book was released on 1979 with total page 1342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Boundary Layer Theory written by Hermann Schlichting (Deceased) and published by Springer. This book was released on 2016-10-04 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition of the near-legendary textbook by Schlichting and revised by Gersten presents a comprehensive overview of boundary-layer theory and its application to all areas of fluid mechanics, with particular emphasis on the flow past bodies (e.g. aircraft aerodynamics). The new edition features an updated reference list and over 100 additional changes throughout the book, reflecting the latest advances on the subject.
Download or read book Advances in Hydroinformatics written by Philippe Gourbesville and published by Springer. This book was released on 2015-08-21 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of extended papers based on presentations given during the SIMHYDRO 2014 conference, held in Sophia Antipolis in June 2014. It focuses on the modeling and simulation of fast hydraulic transients, on 3D modeling, and on uncertainties and multiphase flows. The book explores both the limitations and performance of current models and presents the latest developments based on new numerical schemes, high-performance computing, multiphysics and multiscale methods, and better interaction with field or scale model data. It addresses the interests of practitioners, stakeholders, researchers and engineers active in this field.
Download or read book Government Reports Annual Index Keyword A L written by and published by . This book was released on 1986 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book In Vessel Melt Retention and Ex Vessel Corium Cooling IAEA Tecdoc No 1906 written by International Atomic Energy Agency and published by International Atomic Energy Agency. This book was released on 2020-08-06 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication results from a technical meeting on phenomenology and technologies relevant to in-vessel melt retention (IVMR) and ex-vessel corium cooling (EVCC). The purpose of the publication is to capture the state of knowledge, at the time of that meeting, related to phenomenology and technologies as well as the challenges and pending issues relevant to IVMR and EVCC for water cooled reactors by summarizing the information provided by the meeting participants in a form useful to practitioners in Member States.
Download or read book A Parallel Finite Volume Algorithm for Large eddy Simulation of Turbulent Flows written by Trong T. Bui and published by . This book was released on 1998 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
