摘要
采用5阶WENO格式,通过数值求解二维非定常欧拉方程,模拟了激波与四涡组成的涡列的相互作用过程.通过研究马赫数为1.05的激波与强度为0.25的多涡列相互作用,进一步揭示了激波-涡列相互作用的动力学特性以及声波的产生过程.
The interaction between a shock wave and a vortex street composed of four vortices is simulated through solving the two-dimensional,unsteady compressible Euler equation using a fifth order weighted essentially non-oscillatory finite difference scheme.In our simulation,the Mach number of the shock wave is prescribed to be 1.05,and the Mach number of a vortex is set to be 0.25.The purpose of the study is to characterize and understand the shock structures and the mechanism of sound generation for complex interactions further.
出处
《中国科学：物理学、力学、天文学》
CSCD
北大核心
2012年第1期78-94,共17页
Scientia Sinica Physica,Mechanica & Astronomica
基金
国家自然科学基金资助项目(批准号:11072053)
关键词
激波
四涡涡列
相互作用
声波
POD分析
shock wave
vortex street composed of four vortices
interaction
sound wave
POD
