Direct Numerical Simulation of a Spatially Evolving Supersonic Turbulent Boundary Layer at Ma=6


Autoria(s): 李新亮; 傅德薰; 马延文
Data(s)

2006

Resumo

Direct numerical simulation is carried out for a spatially evolving supersonic turbulent boundary layer at free-stream Mach number 6. To overcome numerical instability, the seventh-order WENO scheme is used for the convection terms of Navier-Stokes equations, and fine mesh is adopted to minimize numerical dissipation. Compressibilty effects on the near-wall turbulent kinetic energy budget are studied. The cross-stream extended self-similarity and scaling exponents including the near-wall region are studied. In high Mach number flows, the coherence vortex structures are arranged to be smoother and streamwised, and the hair-pin vortices are less likely to occur.

Identificador

http://dspace.imech.ac.cn/handle/311007/15846

http://www.irgrid.ac.cn/handle/1471x/533

Idioma(s)

英语

Palavras-Chave #力学
Tipo

期刊论文