2009 • In Deconinck, Herman; Dick, Eric (Eds.) Computational Fluid Dynamics 2006 - Proceedings of the Fourth International Conference on Computational Fluid Dynamics, ICCFD.
[en] The aim of this paper is to simulate low Mach number unsteady viscous flows using a density-based finite volumes solver. This kind of solver is known to encounter some difficulties to simulate low Mach number flows in which the density is almost constant. Convergence fails or accuracy decreases when the speed of sound is much greater than the fluid velocity. Local preconditioning methods intend to solve this problem by altering the time derivative terms of the Navier-Stokes equations in order to artificially modify the speed of sound, improving the convergence and accuracy in the case of low Mach number steady flows.
Disciplines :
Ingénierie mécanique Mathématiques
Auteur, co-auteur :
Vigneron, Didier ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Aérodynamique
Deliège, Geoffrey ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS-Aérodynamique
Essers, Jean-André ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Aérodynamique
Langue du document :
Anglais
Titre :
Crank-Nicolson Scheme for Solving Low Mach Number Unsteady Viscous Flows Using an Implicit Preconditioned Dual Time Stepping Technique
Date de publication/diffusion :
2009
Nom de la manifestation :
ICCFD4 - Fourth International Conference on Computational Fluid Dynamics
Lieu de la manifestation :
Ghent, Belgique
Date de la manifestation :
du 10 juillet 2006 au 14 juillet 2006
Manifestation à portée :
International
Titre de l'ouvrage principal :
Computational Fluid Dynamics 2006 - Proceedings of the Fourth International Conference on Computational Fluid Dynamics, ICCFD.
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