No abstract

No abstract

No abstract

In the practical aerospace industry, the supersonic rarefied effect presents multiscale characteristics from the near-continuous regime to the free molecular regime. In this paper, a simple hydrodynamic-particle method (SHPM) is proposed to efficiently capture the multiscale properties for the supersonic rarefied flow. To combine the conventional computational fluid dynamics (CFD) solver with the particle-based method, the weights are theoretically derived from the integral solution of the Boltzmann-BGK equation. The present numerical method is validated by test cases of supersonic shock wave structure, Sod shock-tube and supersonic flow around the circular cylinder. Numerical results demonstrate that the SHPM could capture the multiscale properties from the continuum regime to the rarefied regime.

No abstract