Application of Pse to the Structure Simulation of Com-pressible Mixing Layer

摘要：

The method of parabolized stability equations (PSE) are applied in the simulation of flow structure in compressible free shear layer. The spatial evolving unstable waves which dominate the flow structure are investigated through nonlinear coupling spatial marching methods. The instantaneous flow field is obtained by adding the harmonic waves into basic flow. The results demonstrate that T-S wave does not keeping growing exponential as the linear evolution, the energy transfer to high order harmonic modes and finally all harmonic modes get saturation due to the nonlinear interaction; mean flow distortion produced by the nonlinear interaction between the harmonic and its conjugate harmonic, makes great change to the average flow and increases the thickness of mixing layer; PSE methods can well capture the large scale nonlinear structure in the mixing layer such as vortex roll-up, vortex pairing and A vortex.

关键词： compressible mixing layer parabolized stability equations nonlinear stability flow struc-ture vortex roll-up vortex pairing A vortex

作者: Guo Xin Wang Qiang

作者单位: China Academy of Aerospace Aerodynamics,Beijing 100074, China China Academy of Aerospace Aerodynamics, Beijing 100074, China

会议类型: 国际会议

会议名称: The 8th Sino-Russia High-speed Flow Conference(第八届中俄高超声速流体力学研讨会)

会议地点: 上海

会议语种:英文

页码: 23-27

在线出版日期: 2011-11-21（万方平台首次上网日期，不代表论文的发表时间）