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Numerical boundary conditions in Finite Volume and Discontinuous Galerkin schemes for the simulation of rarefied flows along solid boundaries

Author

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  • Baranger, C.
  • Hérouard, N.
  • Mathiaud, J.
  • Mieussens, L.

Abstract

We present a numerical comparison between two standard finite volume schemes and a discontinuous Galerkin method applied to the BGK equation of rarefied gas dynamics. We pay particular attention to the numerical boundary conditions in order to preserve the rate of convergence of the method. Most of our analysis relies on a 1D problem (Couette flow), but we also present some results for a 2D aerodynamical flow.

Suggested Citation

  • Baranger, C. & Hérouard, N. & Mathiaud, J. & Mieussens, L., 2019. "Numerical boundary conditions in Finite Volume and Discontinuous Galerkin schemes for the simulation of rarefied flows along solid boundaries," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 159(C), pages 136-153.
    • Handle: RePEc:eee:matcom:v:159:y:2019:i:c:p:136-153
    DOI: 10.1016/j.matcom.2018.11.011
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