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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2015, Vol. 36 ›› Issue (1): 135-146.doi: 10.7527/S1000-6893.2014.0232

• Experiments and Numerical Simulations • Previous Articles     Next Articles

Gas kinetic scheme in hypersonic flow simulation

XU Kun, CHEN Songze   

  1. Department of Mathematics, The Hong Kong University of Science and Technology, Hong Kong, China
  • Received:2014-07-25 Revised:2014-09-22 Online:2015-01-15 Published:2014-09-23
  • Supported by:

    Hong Kong Research Grant Council (621011, 620813); State Key Laboratory of High-temperature Gas Dynamics Open Fund (2013KF03); Supported by State Key Laboratory for Turbulence and Complex Systems of Peking University

Abstract:

For hypersonic flow simulation, a review of computation fluid dynamics (CFD) and a summary of gas kinetic scheme are presented in this paper. The mechanism underlying the construction of gas kinetic scheme is clarified by comparing it with the traditional CFD method. The importance of direct modeling and the implementation of the physical laws in a discretized space are emphasized. Through some classical hypersonic applications in recent years, such as the shock/shock interaction, shock wave/boundary layer interaction, and hypersonic boundary layer separation problems, the advantages of the methodology are also demonstrated. As a trend of CFD, the gas kinetic scheme includes more fundamental physical laws in its algorithm construction, and the multiple scale nature makes the kinetic scheme feasible for the hypersonic applications. The principle of direct modeling and the methodology of constructing numerical schemes from mesoscopic or microscopic flow dynamics would benefit the development of reliable flow solvers, especially for the high speed flow.

Key words: hypersonic, gas kinetic scheme, slip boundary condition, shock/shock interaction, shock wave/boundary layer interaction

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