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An efficient invariant-region-preserving central scheme for hyperbolic conservation laws

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  • Yan, Ruifang
  • Tong, Wei
  • Chen, Guoxian

Abstract

Due to the Riemann solver free and avoiding characteristic decomposition, the central scheme is a simple and efficient tool for numerical solution of hyperbolic conservation laws (Nessyahu and Tadmor, J. Comput. Phys., 87(2):314-329,1990). But the theoretical Courant number CFL in order to preserve the invariant region of the numerical solution is very small, and there is lack of the stability proof for nonlinear systems. By adding a limiter on the reconstructed slope without requiring clipping condition, we enlarge the value of the CFL to admit larger time step. Then a widely applicable stability proof, which is suitable for general hyperbolic conservation laws, is given by writing the evolved solution as convex combinations in terms of the Lax-Friedrichs scheme. Some numerical experiments are carried out to verify the robustness.

Suggested Citation

  • Yan, Ruifang & Tong, Wei & Chen, Guoxian, 2023. "An efficient invariant-region-preserving central scheme for hyperbolic conservation laws," Applied Mathematics and Computation, Elsevier, vol. 436(C).
    • Handle: RePEc:eee:apmaco:v:436:y:2023:i:c:s0096300322005744
    DOI: 10.1016/j.amc.2022.127500
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    References listed on IDEAS

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    1. Touma, R. & Saleh, M.A., 2021. "Well-balanced central schemes for pollutants transport in shallow water equations," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 190(C), pages 1275-1293.
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    Cited by:

    1. Yan, Ruifang & Tong, Wei & Chen, Guoxian, 2023. "A mass conservative, well balanced and positivity-preserving central scheme for shallow water equations," Applied Mathematics and Computation, Elsevier, vol. 443(C).

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