Simulation numérique d'un champ turbulent homogène incompressible soumis à des gradients de vitesse moyenne PDF Download
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Author: Philippe Roy
Publisher:
ISBN:
Category : Viscous flow
Languages : fr
Pages : 133
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Book Description
MODELISATION ET APPROXIMATION NUMERIQUE DU PROBLEME. ON INTRODUIT UNE NOUVELLE FORMULATION DES EQUATIONS AUTORISANT LA SIMULATION DES CHAMPS MOYENS LES PLUS GENERAUX. ON PROPOSE DES METHODES D'ESTIMATION ET MINIMISATION DES ERREURS D'ANISOTROPIE NUMERIQUE. LA FORMULATION EST IMPLANTEE SUR UNE INSTALLATION DE TYPE MIMD SUR LAQUELLE SONT EFFECTUEES LA SIMULATION. ON ETUDIE DEUX CHAMPS MOYENS: LA DEFORMATION PLANE ET LA ROTATION. MISE EN EVIDENCE DE L'INFLUENCE DE LA ROTATION DANS L'ESPACE SPECTRAL. OBSERVATION D'UNE TRANSITION ENTRE TURBULENCE TRIDIMENSIONNELLE ET TURBULENCE BIDIMENSIONNELLE
Author: Philippe Roy
Publisher:
ISBN:
Category : Viscous flow
Languages : fr
Pages : 133
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Book Description
MODELISATION ET APPROXIMATION NUMERIQUE DU PROBLEME. ON INTRODUIT UNE NOUVELLE FORMULATION DES EQUATIONS AUTORISANT LA SIMULATION DES CHAMPS MOYENS LES PLUS GENERAUX. ON PROPOSE DES METHODES D'ESTIMATION ET MINIMISATION DES ERREURS D'ANISOTROPIE NUMERIQUE. LA FORMULATION EST IMPLANTEE SUR UNE INSTALLATION DE TYPE MIMD SUR LAQUELLE SONT EFFECTUEES LA SIMULATION. ON ETUDIE DEUX CHAMPS MOYENS: LA DEFORMATION PLANE ET LA ROTATION. MISE EN EVIDENCE DE L'INFLUENCE DE LA ROTATION DANS L'ESPACE SPECTRAL. OBSERVATION D'UNE TRANSITION ENTRE TURBULENCE TRIDIMENSIONNELLE ET TURBULENCE BIDIMENSIONNELLE
Author: Philippe Roy (mathématicien).)
Publisher:
ISBN:
Category :
Languages : fr
Pages : 133
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Book Description
Modélisation et approximation numérique du problème. On introduit une nouvelle formulation des équations autorisant la simulation des champs moyens les plus généraux. On propose des méthodes d'estimation et minimisation des erreurs d'anisotropie numérique. La formulation est implantée sur une installation de type MIMD sur laquelle sont effectuées la simulation. On étudie deux champs moyens : la déformation plane et la rotation. Mise en évidence de l'influence de la rotation dans l'espace spectral. Observation d'une transition entre turbulence tridimensionnelle et turbulence bidimensionnelle
Author: Roger Peyret
Publisher: Springer Science & Business Media
ISBN: 1475765576
Category : Mathematics
Languages : en
Pages : 438
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Book Description
This well-written book explains the theory of spectral methods and their application to the computation of viscous incompressible fluid flow, in clear and elementary terms. With many examples throughout, the work will be useful to those teaching at the graduate level, as well as to researchers working in the area.
Author: Hans-Hermann Fernholz
Publisher: Springer Science & Business Media
ISBN: 3642838227
Category : Science
Languages : en
Pages : 528
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Book Description
The Second European Turbulence Conference was held at the Technische Univer sitat Berlin, Federal Republic of Germany, from August 30th to September 2nd 1988 under the auspices of the European Mechanics Committee. It was primar ily devoted to fundamental aspects of turbulence, and aimed at bringing together engineers, physicists, and mathematicians. The scientific committee - serving also as Sub-committee of the European Turbulence Conference - consisted of the following members: G. Comte-Bellot (Lyon), H.-H. Fernholz and H.E. Fiedler (both from Berlin) as co-chairmen of the conference, U. Frisch (Nice), J.C.R. Hunt (Cambridge), E. Krause (Aachen), M. Landahl (Stockholm), A.M. Obukhov (Moscow), and G. Ooms (Amsterdam). The conference programme comprised 6 invited lectures and 94 contributions, presented either orally or at poster sessions. There were 165 participants from 18 countries. All papers published in these conference proceedings were, with the exception of the invited ones, again refereed by the members of the scientific committee. The main research topics discussed at this meeting were stability and gener ation of turbulence, effects of rotation, stratification and buoyancy forces, novel instrumentation, manipulation and control, boundary layers with separation and reattachment, computer simulation, turbulent diffusion, image analysis and flow visualization, vorticity dynamics and turbulence, and large-scale structures. We have taken the liberty of regrouping some papers following the submitted final versions for this volume. Authors may therefore find their paper under a different heading from that in the conference programme.
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 566
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Book Description
Author: E.J. Hopfinger
Publisher: Springer
ISBN: 3709126029
Category : Science
Languages : en
Pages : 369
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Book Description
The volume presents a comprehensive overview of rotation effects on fluid behavior, emphasizing non-linear processes. The subject is introduced by giving a range of examples of rotating fluids encountered in geophysics and engineering. This is then followed by a discussion of the relevant scales and parameters of rotating flow, and an introduction to geostrophic balance and vorticity concepts. There are few books on rotating fluids and this volume is, therefore, a welcome addition. It is the first volume which contains a unified view of turbulence in rotating fluids, instability and vortex dynamics. Some aspects of wave motions covered here are not found elsewhere.
Author:
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 1000
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Book Description
Author: Philippe Delorme
Publisher:
ISBN:
Category : Burgers equation
Languages : fr
Pages : 47
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Book Description
ETUDE DE DIFFERENTS SCHEMAS TEMPORELS ADAPTES A L'EQUATION DE BURGERS PUIS AUX EQUATIONS DE NAVIER-STOKES. ON UTILISE UNE METHODE SPECTRALE POUR LA DISCRETISATION EN ESPACE. APPLICATION A UNE GEOMETRIE CARREE PUIS CUBIQUE. SIMULATION DE FLUIDES SOUMIS A UN GRADIENT CONSTANT DU CHAMP DE VITESSE MOYEN ; APPLICATION AU CISAILLEMENT. SIMULATIONS AVEC UN CHAMP INITIAL DE VITESSE QUI EST LA SUPERPOSITION D'UN PROFIL MOYEN ET D'UNE PERTURBATION TURBULENTE (ECOULEMENT TYPE "JET")
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 964
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Book Description
Author: Jean-Paul Zahn
Publisher: North Holland
ISBN:
Category : Science
Languages : en
Pages : 660
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Book Description
This book aims to lay the basis of astrophysical fluid dynamics and the topics treated cover various aspects of this discipline. These include: the essential properties of turbulence; dynamical systems; the effects of magnetic fields significant in the sun, including magnetohydrodynamics in general and dynamo theories; the use of numerical simulation to explore the behavior of thermal convection in a highly stratified medium; stellar pulsations. The resulting book is intended as both a manual for the graduate student as well as for the seasoned scientist.
