Séminaire : Modélisation et Calcul Scientifique

On anisotropic mesh generation for CFD

  • Date : 27/03/2012
  • Lieu : Amphithéâtre Alan Turing
  • Intervenants : Adrien Loseille, Gamma3, Inria
  • Organisateurs : Irène Vignon-Clementel

Flows involved in aerospace, naval, train and automotive industries are composed of complex features and multi-scales phenomena: shocks waves, boundary layers, turbulence, etc. When dealing with complex geometries, all these features may be present in the flow field and interact. If each subject is studied on its own, an unified approach to generate the best discretization for each component of the flow is still a challenge. Indeed, many numerical examples have proved that the performance of a numerical scheme is bounded by the qualityand the features of the discretization. For instance, anisotropic meshes may be preferred to capture accurately shocks [1,2] while cartesian grids may be preferred at a turbulent regime to allow high-order capturing of vortices [4]. In the vicinity of bodies, quasi-structured grids are employed to capture the boundary layer in viscous simulations [3]. 
This talk will deal with the problematics of handling all the previous requirements for flows around complex geometries. 

[1] M.J. Castro-Diaz, F. Hecht, B. Mohammadi and O. Pironneau, Anisotropic unstructured mesh adaptation for flow simulations, IJNMF, Vol.25, pp-475-491, 1997 [2] P. J. Frey and P.-L. George,  Mesh generation. Application to finite elements. Herm_es Science, Paris, Oxford, 2000.
[3] R. Lohner,  Applied CFD techniques, Wiley, New-York, 2001.[4] M. Wu and M.P. Martin, Direct numerical simulation of supersonic turbulent boundary layer over a compression ramp. AIAA Journal, 45:879{889, 2007.

Mots-clés : Modélisation et Calcul Scientifique Séminaire Centre de recherche Inria Paris - Rocquencourt

Haut de page

Siège et centres de recherche Inria

Accès direct

Social