应用数学和力学2013，Vol.34Issue(2)：127-138,12.DOI:10.3879/j.issn.1000-0887.2013.02.003
脉冲波作用下的高超音速非定常流动模拟及影响研究
Numerical Simulation and Impact Studies of Hypersonic Unsteady Flow Under the Action of Pulse Disturbance Wave
摘要
Abstract
Direct numerical simulation of pulse disturbance in hypersonic flow over a blunt cone by using high-order accuracy finite difference method was performed. The interaction be-tween fast acoustic wave and hypersonic flow field was studied; the evolution and development process of disturbance wave in the boundary layer was analyzed by Fourier frequency spectral analysis (FFSA). Results show that the disturbance into the flow field interacted with the shock wave and boundary layer, which makes bow shock bent obviously and disturbance en-larged, with obvious demarcations between the disturbance near the wall and in the outer boundary layer. The perturbation amplitudes on the nose are much larger than on the other lo-cations. At the stage of the development of disturbance in the boundary layer, some perturba-tion modes continue to grow, some are filtered and seldom grow, even decay, and also some decay firstly and then grow. In general, the low frequency perturbation modes are dominated within a nose radius, with the disturbance development from upstream to downstream, the high frequency components increase quickly and low frequency components almost are restrained to grow.关键词
高超音速/边界层/脉冲扰动/快声波/Fourier频谱分析Key words
hypersonic flow/boundary-layer/pulse perturbation/fast acoustic wave/Fourier frequency spectral analysis分类
数理科学引用本文复制引用
孟祥男,王振清,唐小军,吕红庆..脉冲波作用下的高超音速非定常流动模拟及影响研究[J].应用数学和力学,2013,34(2):127-138,12.基金项目
国家自然科学基金资助项目(11272096) （11272096）
高等学校博士学科点专项科研基金资助项目(20112304110015) （20112304110015）
中央高校基本科研业务费专项资金资助项目(HEUCF100204) （HEUCF100204）
