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Article Dans Une Revue International Journal for Numerical Methods in Fluids Année : 2005

Towards very high-order accurate schemes for unsteady convection problems on unstructured meshes.

Résumé

Summary: We construct several high-order residual-distribution methods for two-dimensional unsteady scalar advection on triangular unstructured meshes. For the first class of methods, we interpolate the solution in the space-time element. We start by calculating the first-order node residuals, then we calculate the high-order cell residual, and modify the first-order residuals to obtain high accuracy. For the second class of methods, we interpolate the solution in space only, and use high-order finite difference approximation for the time derivative. In doing so, we arrive at a multistep residual-distribution scheme. We illustrate the performance of both methods on several standard test problems.

Dates et versions

inria-00402652 , version 1 (07-07-2009)

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Citer

R. Abgrall, N. Andrianov, M. Mezine. Towards very high-order accurate schemes for unsteady convection problems on unstructured meshes.. International Journal for Numerical Methods in Fluids, 2005, 47 (8-9), pp.679-691. ⟨10.1002/fld.870⟩. ⟨inria-00402652⟩

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