Un Algorithme Faible Nombre de Mach pour la Simulation des Ecoulements de Fluides Supercritiques par des Méthodes Spectrales.
Language
fr
Communication dans un congrès
This item was published in
Proceedings du 19ème Congrès Français de Mécanique, Proceedings du 19ème Congrès Français de Mécanique, 19ème Congrès Français de Mécanique, 2009-08-24, Marseille. 2009p. article 337
English Abstract
The numerical simulations of supercritical fluids flows were always performed using finite volume methods. These methods were used in association with iterative schemes for coupling all the equations, leading to very ...Read more >
The numerical simulations of supercritical fluids flows were always performed using finite volume methods. These methods were used in association with iterative schemes for coupling all the equations, leading to very time-consuming computational codes. In this paper, we propose a new algorithm for an uncoupled solution of energy and Navier-Stokes equations in the low Mach number approximation with a spectral method. Indeed, spectral methods are known to ensure the highest accuracy and to allow the use of very fast techniques, such as FFT and complete diagonalization of the operators, leading to very efficient computational codes. The algorithm proposed is evaluated on a problem of natural convection for which results obtained with a finite volume method are available in literatureRead less <
Keywords
Fluides supercritiques
simulation numérique
faible nombre de Mach
méthode de projection
méthodes spectrales
Origin
Hal imported