This article is cited in 24 papers

Minimal dissipation hybrid bicompact schemes for hyperbolic equations

M. D. Bragin^a, B. V. Rogov<sup>ba

a</sup> Moscow Institute of Physics and Technology (State University), Dolgoprudny, Moscow region
^b Keldysh Institute of Applied Mathematics of Russian Academy of Sciences, Moscow

Abstract: New monotonicity-preserving hybrid schemes are proposed for multidimensional hyperbolic equations. They are convex combinations of high-order accurate central bicompact schemes and upwind schemes of first-order accuracy in time and space. The weighting coefficients in these combinations depend on the local difference between the solutions produced by the high- and low-order accurate schemes at the current space-time point. The bicompact schemes are third-order accurate in time, while having the fourth order of accuracy and the first difference order in space. At every time level, they can be solved by marching in each spatial variable without using spatial splitting. The upwind schemes have minimal dissipation among all monotone schemes constructed on a minimum space-time stencil. The hybrid schemes constructed has been successfully tested as applied to a number of two-dimensional gas dynamics benchmark problems.

Key words: hyperbolic equations, bicompact and compact schemes, monotone schemes, shock-capturing schemes, TVD schemes.

UDC: 519.63

Received: 09.11.2015

DOI: 10.7868/S0044466916060090

 English version: Computational Mathematics and Mathematical Physics, 2016, 56:6, 947–961

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