Etude expérimentale et numérique du mélange de gaz turbulent par jets transverses PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Etude expérimentale et numérique du mélange de gaz turbulent par jets transverses PDF full book. Access full book title Etude expérimentale et numérique du mélange de gaz turbulent par jets transverses by Amine Gourara. Download full books in PDF and EPUB format.
Author: Amine Gourara
Publisher:
ISBN:
Category :
Languages : fr
Pages : 202
Get Book Here
Book Description
Ce travail vise à mieux comprendre les mécanismes de transport turbulents impliqués dans les mélangeurs de gaz à jets transverses. Un injecteur situé dans l'axe d'une soufflerie et débitant de deux à quatre jets symétriques transverses à un écoulement principal définit la configuration de mélange. Un code LES a été validé. Trois régimes de dilution ont été identifiés en fonction du rapport des flux de quantité de mouvement : dilution (i) liée aux jets, (ii) mixte jets/sillage et (iii) gérée par le sillage. Une méthode prédictive des risques d'inflammation d'un mélange méthane/oxygène est présentée : (i) une simulation LES fournit les champs de vitesse et de concentration, (ii) des éléments lagrangiens sont introduits et leurs trajectoires sont calculées, (iii) des FDP caractérisant la turbulence dans le mélangeur sont construites, et (iv) les limites d'inflammabilité et les délais d'auto-allumage issus de calculs cinétiques découplés permettent d'obtenir les probabilités d'inflammation.
Author: Amine Gourara
Publisher:
ISBN:
Category :
Languages : fr
Pages : 202
Get Book Here
Book Description
Ce travail vise à mieux comprendre les mécanismes de transport turbulents impliqués dans les mélangeurs de gaz à jets transverses. Un injecteur situé dans l'axe d'une soufflerie et débitant de deux à quatre jets symétriques transverses à un écoulement principal définit la configuration de mélange. Un code LES a été validé. Trois régimes de dilution ont été identifiés en fonction du rapport des flux de quantité de mouvement : dilution (i) liée aux jets, (ii) mixte jets/sillage et (iii) gérée par le sillage. Une méthode prédictive des risques d'inflammation d'un mélange méthane/oxygène est présentée : (i) une simulation LES fournit les champs de vitesse et de concentration, (ii) des éléments lagrangiens sont introduits et leurs trajectoires sont calculées, (iii) des FDP caractérisant la turbulence dans le mélangeur sont construites, et (iv) les limites d'inflammabilité et les délais d'auto-allumage issus de calculs cinétiques découplés permettent d'obtenir les probabilités d'inflammation.
Author: Patrick Chassaing
Publisher:
ISBN:
Category :
Languages : fr
Pages : 144
Get Book Here
Book Description
ETUDE DU CAS OU LA VARIATION DE MASSE VOLUMIQUE PROVIENT DU SEUL MELANGE DE DEUX GAZ NON REACTIFS DANS DES CONDITIONS PRATIQUEMENT ISOTHERME ET ISOBARE. LA CONFIGURATION RETENUE ET DU TYPE JET LIBRE A SYMETRIE DE RESOLUTION. ETUDE THEORIQUE BASEE SUR UNE MODELISATION DE LA TURBULENCE PAR USAGE DE SCHEMAS DE FERMETURE EN UN POINT DE L'ESPACE PHYSIQUE. ETABLISSEMENT DES EQUATIONS DU MOUVEMENT MOYEN, DES CORRELATION DU SECOND ORDRE ET DES TAUX DE DISSIPATION EN "MOYENNE DE FAVRE". RESOLUTION NUMERIQUE DU MODELE PRESENTE A L'AIDE DE DEUX CODES DE CALCUL SELON QUE LA MASSE VOLUMIQUE EST CONSTANTE OU NON. LES CODES S'INSPIRENT DES IDEES DE PATANKAR ET SPALDING. ETUDE EXPERIMENTALE SUR DES JETS A MASSE VOLUMIQUE CONSTANTE ET VARIABLE
Author: Fabien Anselmet
Publisher: John Wiley & Sons
ISBN: 1119178398
Category : Technology & Engineering
Languages : en
Pages : 529
Get Book Here
Book Description
This didactic book presents the main elements of acoustics, aeroacoustics and vibrations. Illustrated with numerous concrete examples linked to solid and fluid continua, Acoustics, Aeroacoustics and Vibrations proposes a selection of applications encountered in the three fields, whether in room acoustics, transport, energy production systems or environmental problems. Theoretical approaches enable us to analyze the different processes in play. Typical results, mostly from numerical simulations, are used to illustrate the main phenomena (fluid acoustics, radiation, diffraction, vibroacoustics, etc.).
Author: Ahmed Belasri
Publisher: Springer Nature
ISBN: 9811554447
Category : Technology & Engineering
Languages : en
Pages : 659
Get Book Here
Book Description
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.
Author: Uriel Frisch
Publisher: Springer Science & Business Media
ISBN: 9401151180
Category : Science
Languages : en
Pages : 630
Get Book Here
Book Description
Advances in Turbulence VII contains an overview of the state of turbulence research with some bias towards work done in Europe. It represents an almost complete collection of the invited and contributed papers delivered at the Seventh European Turbulence Conference, sponsored by EUROMECH and ERCOFTAC and organized by the Observatoire de la Côte d'Azur. New high-Reynolds number experiments combined with new techniques of imaging, non-intrusive probing, processing and simulation provide high-quality data which put significant constraints on possible theories. For the first time, it has been shown, for a class of passive scalar problems, why dimensional analysis sometimes gives the wrong answers and how anomalous intermittency corrections can be calculated from first principles. The volume is thus geared towards specialists in the area of flow turbulence who could not attend the conference as well as anybody interested in this rapidly moving field.
Author: Canada. Department of Fisheries and Oceans
Publisher: Peches Et Oceans Direction Generale Des Communications = Fisheries and Oceans Communications Dir
ISBN:
Category : Science
Languages : fr
Pages : 376
Get Book Here
Book Description
Proceedings of a workshop, the scientific reviews and the contributed papers presented at the symposium. The document presents a brief historical summary of marine research in the Gulf; reports the discussions, conclusions and recommendations of the different working groups on oceanography (physics, biology, chemistry and sedimentology) and on the fishery (fish and invertebrates); then presents the discussions of each multidisciplinary working group, centered around how the St. Lawrence system may be used as a natural laboratory which will contribute to the solution of major long-term problems of conservation of natural resources and of the quality of the environment.
Author: Andreas Kempf
Publisher:
ISBN: 9783183513062
Category :
Languages : en
Pages : 115
Get Book Here
Book Description
Author: Philippe Gourbesville
Publisher: Springer
ISBN: 9812876154
Category : Science
Languages : en
Pages : 616
Get Book Here
Book Description
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.
Author: D Brian Spalding
Publisher: Elsevier
ISBN: 1483188175
Category : Reference
Languages : en
Pages : 393
Get Book Here
Book Description
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.
Author: Thierry Poinsot
Publisher: R.T. Edwards, Inc.
ISBN: 9781930217102
Category : Science
Languages : en
Pages : 544
Get Book Here
Book Description
Introducing numerical techniques for combustion, this textbook describes both laminar and turbulent flames, addresses the problem of flame-wall interaction, and presents a series of theoretical tools used to study the coupling phenomena between combustion and acoustics. The second edition incorporates recent advances in unsteady simulation methods,
