Abstract:
Monotonicity conditions for the CABARET scheme approximating a quasilinear scalar conservation law with a convex flux are obtained. It is shown that the monotonicity of the CABARET scheme for Courant numbers r∈(0.5,1] does not ensure the complete decay of unstable strong discontinuities. For the CABARET scheme, a difference analogue of an entropy inequality is derived and a method is proposed ensuring the complete decay of unstable strong discontinuities in the difference solution for any Courant number at which the CABARET scheme is stable. Test computations illustrating these properties of the CABARET scheme are presented.
Citation:
N. A. Zyuzina, V. V. Ostapenko, “Decay of unstable strong discontinuities in the case of a convex-flux scalar conservation law approximated by the CABARET scheme”, Zh. Vychisl. Mat. Mat. Fiz., 58:6 (2018), 988–1012; Comput. Math. Math. Phys., 58:6 (2018), 950–966
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\by N.~A.~Zyuzina, V.~V.~Ostapenko
\paper Decay of unstable strong discontinuities in the case of a convex-flux scalar conservation law approximated by the CABARET scheme
\jour Zh. Vychisl. Mat. Mat. Fiz.
\yr 2018
\vol 58
\issue 6
\pages 988--1012
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\crossref{https://doi.org/10.7868/S004446691806011X}
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\transl
\jour Comput. Math. Math. Phys.
\yr 2018
\vol 58
\issue 6
\pages 950--966
\crossref{https://doi.org/10.1134/S0965542518060155}
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Linking options:
https://www.mathnet.ru/eng/zvmmf10709
https://www.mathnet.ru/eng/zvmmf/v58/i6/p988
This publication is cited in the following 3 articles:
Alexander Sukhinov, Alexander Chistyakov, Inna Kuznetsova, Yulia Belova, Elena Rahimbaeva, “Development and Research of a Modified Upwind Leapfrog Scheme for Solving Transport Problems”, Mathematics, 10:19 (2022), 3564
A. I. Sukhinov, I. Yu. Kuznetsova, A. E. Chistyakov, E. A. Protsenko, Yu. V. Belova, “Studying the Accuracy and Applicability of the Finite Difference Scheme for Solving the Diffusion–Convection Problem at Large Grid Péclet Numbers”, J Appl Mech Tech Phy, 62:7 (2021), 1255
A.I. Sukhinov, I.Y. Kuznetsova, A.E. Chistyakov, E.A. Protsenko, Y.V. Belova, “Study of the accuracy and applicability of the difference scheme for solving the diffusion-convection problem at large grid Péclet numbers”, Comp. Contin. Mech., 13:4 (2020), 437