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KIAM Preprint  41, Moscow, 2021
Authors: Val'ko V.V., Savenko N.O., Bay A.A.
Computational experiments with the AUSM technique
Abstract:
In this paper, we discuss computational experiments based on the AUSM stream splitting methods. The efficiency of using various pressure approximations for flow splitting according to the original AUSM method is shown. The proposed use of splitting is tested on one-dimensional and three-dimensional problems. Partial use of the flow splitting method, only in terms of pressure, is proposed to be used in the calculations of the Euler system on unstructured grids. A variant of the application of the method of strong deceleration of the flow in the calculations of the flow around obtuse bodies is considered. The algorithm of the method for calculating flows with an extended stagnation zone, within which the Mach numbers decrease to about ~ 0.1, is investigated. Comparison with high-precision methods based on the solution of the Riemann problem is given.
Keywords:
AUSM scheme, flow splitting, pressure approximation, unstructured meshes
Publication language: russian,  pages: 28
Research direction:
Mathematical modelling in actual problems of science and technics
Russian source text:
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About authors:
  • Val'ko Viktor Vasilievich,  orcid.org/0000-0003-2350-5549KIAM RAS
  • Savenko Nikita Olegovych,  orcid.org/0000-0002-0142-6375KIAM RAS
  • Bay Anton Alekseevich,  orcid.org/0000-0002-0007-6246KIAM RAS