The objective of this paper is to perform grid adaptation using composite overlapping meshes in regions of large gradient to accurately capture the salient features during computation. The chimera grid scheme, a multiple overset mesh technique, is used in combination with a Navier-Stokes solver. The numerical solution is first converged to a steady state based on an initial coarse mesh. Solution-adaptive enhancement is then performed by using a secondary fine grid system which oversets on top of the base grid in the high-gradient region, but without requiring the mesh boundaries to join in any special way. Communications through boundary interfaces between those separated grids are carried out using trilinear interpolation. Application to the Euler equations for shock reflections and to shock wave/boundary layer interaction problem are tested. With the present method, the salient features are well-resolved.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Grid adaptation using chimera composite overlapping meshes


    Contributors:

    Published in:

    Publication date :

    1994-05-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English





    Grid adaptation using Chimera composite overlapping meshes

    KAO, KAI-HSIUNG / LIOU, MENG-SING / CHOW, CHUEN-YEN | AIAA | 1993


    Grid adaptation using chimera composite overlapping meshes

    Kao, Kai-Hsiung / Liou, Meng-Sing / Chow, Chuen-Yen | AIAA | 1994


    Grid adaptation on unstructured meshes

    Xia, Guoping / Li, Ding / Merkle, Charles | AIAA | 2001


    Chimera Grid Tools Tutorial

    Chen, William M. / Pandya, Shishir A. | NTRS | 2014