Simulation Numerique De Jets Liquides Cisailles Par Une Phase Rapide

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Simulation numérique de jets liquides cisaillés par une phase rapide

Author : Nicolas Odier
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (99 download)

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Book Synopsis Simulation numérique de jets liquides cisaillés par une phase rapide by : Nicolas Odier

Download or read book Simulation numérique de jets liquides cisaillés par une phase rapide written by Nicolas Odier and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'injection d'un mélange carburant/comburant dans une chambre de combustion d'un turboréacteur ou d'un moteur-fusée fait intervenir un jet liquide, cisaillé par un gaz rapide. Le jet liquide peut être sous certaines conditions sujet à un phénomène de battement à grande échelle. Ce phénomène, dont les mécanismes de base sont aujourd'hui mal connus, peut avoir des conséquences importantes sur la combustion. Nous réalisons dans ce travail une étude numérique de jets liquides cisaillés par une phase rapide, en portant une attention particulière à l'étude de l'interaction entre les structures tourbillonnaires de la phase rapide et le jet liquide. Une nappe liquide plane cisaillée de part et d'autre par une phase rapide est analysée dans un premier temps . Les mécanismes de déstabilisation de cette nappe liquide sont étudiés, ainsi que le contrôle passif du phénomène de battement. Des jets liquides coaxiaux, cisaillés par une couronne de phase rapide, sont ensuite analysés. Les mécanismes de déstabilisation à grande échelle sont étudiés, ainsi que le contrôle passif et actif de cette déstabilisation. La simulation d'une configuration d'écoulement réaliste eau/air est enfin réalisée, en interaction avec les expérimentateurs du LEGI. Une attention particulière est portée à l'écoulement se produisant au sein de la buse d'injection.

SIMULATION NUMERIQUE D'ECOULEMENTS MULTI-FLUIDES COMPRESSIBLES APPLICATION AUX JETS D'EAU A HAUTE VITESSE

Author : PATRICK.. KUSZLA
Publisher :
ISBN 13 :
Total Pages : 184 pages
Book Rating : 4.:/5 (49 download)

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Book Synopsis SIMULATION NUMERIQUE D'ECOULEMENTS MULTI-FLUIDES COMPRESSIBLES APPLICATION AUX JETS D'EAU A HAUTE VITESSE by : PATRICK.. KUSZLA

Download or read book SIMULATION NUMERIQUE D'ECOULEMENTS MULTI-FLUIDES COMPRESSIBLES APPLICATION AUX JETS D'EAU A HAUTE VITESSE written by PATRICK.. KUSZLA and published by . This book was released on 1999 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'OBJET DE CETTE THESE EST DE CONCEVOIR UNE METHODE NUMERIQUE CAPABLE DE SIMULER DES JETS LIQUIDES A HAUTE VITESSE AINSI QUE LEUR IMPACT SUR UN MATERIAU A USINER. NOUS PROPOSONS D'UTILISER UNE APPROCHE QUASI-CONSERVATIVE AINSI QU'UN SCHEMA ROBUSTE (LE SCHEMA HLL) AFIN D'OBTENIR UN CODE S'AFFRANCHISSANT DES OSCILLATIONS NUMERIQUES QUI PEUVENT APPARAITRE AUX INTERFACES. LE MEME TYPE DE PROBLEME PEUT SE PRODUIRE LE LONG DES LIGNES DE GLISSEMENT OU NOUS DEVELOPPONS DES CORRECTIONS APPROPRIEES. LA METHODE NUMERIQUE AINSI CONSTRUITE PERMET DES CALCULS D'IMPACTS DE GOUTTELETTES ET DE JETS. ELLE EST COMPLETEMENT EULERIENNE ET CAPTURE AUTOMATIQUEMENT LES INTERFACES, SI BIEN QU'ELLE S'INTEGRE AISEMENT DANS UN ENVIRONNEMENT DE MAILLAGE ADAPTATIF CARTESIEN. CETTE THESE COMPORTE TROIS PARTIES, LA PREMIERE EXPOSE LA MODELISATION ET LES METHODES NUMERIQUES QUI PERMETTENT NOS SIMULATIONS. LA DEUXIEME PRESENTE DES RESULTATS DE CALCULS NUMERIQUES POUR DES IMPACTS DE GOUTTELETTES ET DE JETS. LA TROISIEME PARTIE DECRIT L'IMPLANTATION DE NOTRE SOLVEUR DANS UN ENVIRONNEMENT DE MAILLAGE ADAPTATIF CARTESIEN.

Simulation numérique directe du contrôle d'écoulements cisaillés libres par injection de fluide

Author : Sylvain Lardeau
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (494 download)

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Book Synopsis Simulation numérique directe du contrôle d'écoulements cisaillés libres par injection de fluide by : Sylvain Lardeau

Download or read book Simulation numérique directe du contrôle d'écoulements cisaillés libres par injection de fluide written by Sylvain Lardeau and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Le contrôle d'écoulements cisaillés libres incompressibles (jet rond et couche de mélange plane) par un ou plusieurs petits jets soufflant dans la zone de transition à la turbulence est étudié numériquement. L'utilisation de schémas de discrétisation très précis et d'une condition d'entrée réaliste permet d'étudier l'influence du ou des jets de contrôle sur la dynamique de l'écoulement manipulé. Dans un premier temps, le contrôle d'un jet rond par deux petits jets soufflant radialement est présenté. Six configurations de contrôle sont étudiées, pour différentes orientations, avec des jets de contrôle débitant de façon stationnaire ou instationnaire. L'expansion du jet est fortement modifiée par l'injection de fluide. On observe notamment une réduction significative de la longueur du cône potentiel. Les modifications structurelles de l'écoulement principal induites par les jets de contrôle ne conduisent cependant pas à une augmentation importante de la production d'enstrophie. L'effet du contrôle sur les propriétés de mélange d'un scalaire passif est également considéré en étudiant la distribution de ce dernier. L'utilisation de jets de contrôle pulsés apparaît comme étant la configuration la plus favorable pour augmenter le mélange du scalaire passif. Une couche de mélange plane turbulente contrôlée par un seul jet soufflant de manière continue est également étudiée, afin de préciser certains phénomènes observés lors de l'étude du jet rond, comme la pénétration intermittente du jet de contrôle dans la couche cisaillée. Ces résultats sont utilisés pour construire une boucle de contrôle actif ouverte. L'écoulement manipulé est une couche de mélange plane, initiallement bidimensionnelle. Ces résultats préliminaires permettent de proposer une stratégie de contrôle plus efficace, basée à la fois sur la fréquence et la phase des structures grandes échelles de l'écoulement manipulé.

Dictionary of Building and Civil Engineering

Author : Don Montague
Publisher : Taylor & Francis
ISBN 13 : 9780419199106
Total Pages : 472 pages
Book Rating : 4.1/5 (991 download)

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Book Synopsis Dictionary of Building and Civil Engineering by : Don Montague

Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.

IUTAM Symposium on Variable Density Low-Speed Turbulent Flows

Author : Louis Fulachier
Publisher : Springer Science & Business Media
ISBN 13 : 9401154740
Total Pages : 372 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis IUTAM Symposium on Variable Density Low-Speed Turbulent Flows by : Louis Fulachier

Download or read book IUTAM Symposium on Variable Density Low-Speed Turbulent Flows written by Louis Fulachier and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: The General Assembly of the International Union of Theoretical and Applied Mechanics in its meeting on August 28, 1994, selected for 1996 only four Mechanics Symposia, of which ours is the only one related to Fluid Mechanics: Variable Density Low Speed Turbulent Flows. This IUTAM Symposium, organized by the Institut de Recherche sur les Phenomenes Hors Equilibre (Marseille), is the logical continuation of the meetings previously organized or co-organized - on the French or European level, such as Euromech 237, Marseille, 1988 - by the same research group ofMarseille. This meeting focused specifically on the structure of turbulent flows in which density varies strongly : the effect of this variation on the velocity and scalar fields is in no sense negligible. We were mainly concerned with low-speed flows subjected to strong local changes of density as a consequence of heat or mass transfer or of chemical reactions. Compressible turbulent flows - such a!" supersonic ones - were also considered in order to underline their similarities to and their differences from low-speed variable density flows.

Building an Emergency Plan

Author :
Publisher : Getty Publications
ISBN 13 : 089236551X
Total Pages : 281 pages
Book Rating : 4.8/5 (923 download)

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Book Synopsis Building an Emergency Plan by :

Download or read book Building an Emergency Plan written by and published by Getty Publications. This book was released on 2000-02-03 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building an Emergency Plan provides a step-by-step guide that a cultural institution can follow to develop its own emergency preparedness and response strategy. This workbook is divided into three parts that address the three groups generally responsible for developing and implementing emergency procedures—institution directors, emergency preparedness managers, and departmental team leaders—and discuss the role each should play in devising and maintaining an effective emergency plan. Several chapters detail the practical aspects of communication, training, and forming teams to handle the safety of staff and visitors, collections, buildings, and records. Emergencies covered include natural events such as earthquakes or floods, as well as human-caused emergencies, such as fires that occur during renovation. Examples from the Barbados Museum and Historical Society, the Museo de Arte Popular Americano in Chile, the Mystic Seaport Museum in Connecticut, and the Seattle Art Museum show how cultural institutions have prepared for emergencies relevant to their sites, collections, and regions.

Livestock Policy Analysis

Author : International Livestock Research Institute
Publisher : ILRI (aka ILCA and ILRAD)
ISBN 13 : 9789291460038
Total Pages : 268 pages
Book Rating : 4.4/5 (6 download)

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Book Synopsis Livestock Policy Analysis by : International Livestock Research Institute

Download or read book Livestock Policy Analysis written by International Livestock Research Institute and published by ILRI (aka ILCA and ILRAD). This book was released on 1995-01-01 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Policy concepts; Identification of policy issues; Production systems, supply and demand; Market, price and trade policies; Marketing and distribution systems; Budget and manpower planning; Land tenure police for the livestock sector; Policy analysis report writing and communication; Livestock production and marketing in alphabeta - a case study.

Genmix

Author : D Brian Spalding
Publisher : Elsevier
ISBN 13 : 1483188175
Total Pages : 393 pages
Book Rating : 4.4/5 (831 download)

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Book Synopsis Genmix by : D Brian Spalding

Download or read book Genmix written by D Brian Spalding and published by Elsevier. This book was released on 2014-05-18 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genmix: A General Computer Program for Two-dimensional Parabolic Phenomena explains a computer program called GENMIX. The main intention of the program is to be used as a tool of instructions. The name of the program is a mixture of two considerations: its generality and its concern for mixing processes. The book aims to help the potential user to understand the physical and mathematical basis of the topic computer program. It is also the aim of the book to make the program applicable to practical problems. The book is arranged in such a way as to parallel a course of lectures and associated computer-workshop sessions wherein the student is allowed to do some elementary computations as soon as he has gained some knowledge of the method. The book contains the mathematical, physical, and computer-coding aspects of the program. Concepts such as the boundary layer, two-dimensional, and steady- flow are defined and discussed in depth. The text will be a useful tool for computer instructors and students.

Satellite Situation Report

Author : Goddard Space Flight Center. Office of Public Affairs
Publisher :
ISBN 13 :
Total Pages : 366 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Satellite Situation Report by : Goddard Space Flight Center. Office of Public Affairs

Download or read book Satellite Situation Report written by Goddard Space Flight Center. Office of Public Affairs and published by . This book was released on 1977 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Heat and Mass Transfer in Boundary Layers

Author : Suhas V. Patankar
Publisher :
ISBN 13 :
Total Pages : 248 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Heat and Mass Transfer in Boundary Layers by : Suhas V. Patankar

Download or read book Heat and Mass Transfer in Boundary Layers written by Suhas V. Patankar and published by . This book was released on 1970 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Convective Mass Transfer

Author : Dudley Brian Spalding
Publisher :
ISBN 13 :
Total Pages : 498 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Convective Mass Transfer by : Dudley Brian Spalding

Download or read book Convective Mass Transfer written by Dudley Brian Spalding and published by . This book was released on 1963 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Heat and Mass Transfer in Recirculating Flows

Author : A. D. Gosman
Publisher :
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Heat and Mass Transfer in Recirculating Flows by : A. D. Gosman

Download or read book Heat and Mass Transfer in Recirculating Flows written by A. D. Gosman and published by . This book was released on 1969 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Space Debris

Author : Heiner Klinkrad
Publisher : Springer Science & Business Media
ISBN 13 : 3540376747
Total Pages : 438 pages
Book Rating : 4.5/5 (43 download)

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Book Synopsis Space Debris by : Heiner Klinkrad

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.

Agricultural English

Author : Georgeta Raţă
Publisher : Cambridge Scholars Publishing
ISBN 13 : 1443839612
Total Pages : 385 pages
Book Rating : 4.4/5 (438 download)

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Book Synopsis Agricultural English by : Georgeta Raţă

Download or read book Agricultural English written by Georgeta Raţă and published by Cambridge Scholars Publishing. This book was released on 2012-04-25 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agricultural English is a collection of essays on the English of Agriculture. The approach is a linguistic one: the different aspects of the English used in the field of agriculture (agricultural practices, agricultural systems) and in some fields related to agriculture (agricultural zoology, agri-tourism, biology, botany, ecology, entomology, gastronomy, land measurement, plant pathology, zoology) are analysed from a morphological (combination, derivation), syntactical (nominal phrases, verbal phrases), lexical and lexicographical, semantic (homonymy, semantic fields, synonymy, terminology), pragmatic (academic discourse, idiom, metaphor), etymological (etymon, Latin heritage), and contrastive (English–Croatian, English–French, English–German, English–Romanian, Romanian–English) points of view. The book will appeal to agriculturists, animal breeders, professors, researchers, students, and translators from Croatian-, English-, French-, German-, and Romanian-speaking countries, active in their own countries or abroad. The types of academic readership it would appeal to include academic teaching staff, researchers and students in the fields of agriculture and related fields – agricultural zoology, agri-tourism, biology, botany, ecology, entomology, gastronomy, land measurement, plant pathology, and zoology.

Calculations in Furnace Technology

Author : Clive Davies
Publisher : Elsevier
ISBN 13 : 1483136051
Total Pages : 287 pages
Book Rating : 4.4/5 (831 download)

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Book Synopsis Calculations in Furnace Technology by : Clive Davies

Download or read book Calculations in Furnace Technology written by Clive Davies and published by Elsevier. This book was released on 2016-05-13 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: Calculations in Furnace Technology presents the theoretical and practical aspects of furnace technology. This book provides information pertinent to the development, application, and efficiency of furnace technology. Organized into eight chapters, this book begins with an overview of the exothermic reactions that occur when carbon, hydrogen, and sulfur are burned to release the energy available in the fuel. This text then evaluates the efficiencies to measure the quantity of fuel used, of flue gases leaving the plant, of air entering, and the heat lost to the surroundings. Other chapters consider that it is important to determine the amount of carbon discharged with the ashes, the quantity and composition of any tar produced, so that a carbon balance can be applied. The final chapter describes the various reactions within the furnace atmosphere and between charges and atmosphere. This book is a valuable resource for fuel technologists, heating and ventilating engineers, and plant operators.

Evaluated Kinetic Data for High Temperature Reactions

Author :
Publisher :
ISBN 13 : 9780408703468
Total Pages : pages
Book Rating : 4.7/5 (34 download)

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Book Synopsis Evaluated Kinetic Data for High Temperature Reactions by :

Download or read book Evaluated Kinetic Data for High Temperature Reactions written by and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Emissions from Continuous Combustion Systems

Author : W. Cornelius
Publisher : Springer Science & Business Media
ISBN 13 : 1468419986
Total Pages : 474 pages
Book Rating : 4.4/5 (684 download)

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Book Synopsis Emissions from Continuous Combustion Systems by : W. Cornelius

Download or read book Emissions from Continuous Combustion Systems written by W. Cornelius and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume documents the proceedings of the Symposium on Emissions from Continuous Combustion Systems that was held at the General Motors Research Laboratories, Warren, Michigan on September 27 and 28, 1971. This symposium was the fifteenth in an annual series presented by the Research Laboratories. Each symposium has covered a different technical discipline. To be selected as the theme of a symposium, the subject must be timely and of vital interest to General Motors as well as to the technical community at large. For each symposium, the practice is to solicit papers at the forefront of research from recognized authorities in the technical discipline of interest. Approximately sixty scientists and engineers from academic, government and industrial circles in this country and abroad are then invited to join about an equal number of General Motors technical personnel to discuss freely the commissioned papers. The technical portion of the meeting is supplemented by social functions at which ample time is afforded for informal exchanges of ideas amongst the participants. By such a direct interaction of a small and select group of informed participants, it is hoped to extend the boundaries of research in the selected technical field.