哈尔滨工程大学学报2013，Vol.34Issue(3)：298-305,8.DOI:10.3969/j.issn.1006-7043.201206001
钝锥高超音速绕流脉冲扰动研究
Study on the effect of pulse perturbation in hypersonic flow over a blunt cone
摘要
Abstract
The research study explored the interaction between hypersonic flow and pulse disturbance wave in free-stream, as a result of the seventh-order upwind weighted essentially non-oscillatory ( WENO) scheme and the sixth-order center difference scheme used to discretize inviscid flux vectors and viscous flux vectors, respectively. The third-order total variation diminishing ( TVD) Runge-Kutta scheme was also employed for time integration to solve Navier-Stokes equations. Based on 6 mach free-stream over a blunt cone, an ultra-short pulse disturbance was introduced at the upstream end of the computational domain to do direct numerical simulation ( DNS) of the evolution and development process of the strong pulse wave; based on finite element software ABAQUS to simulate the transient process of pressure response. The effects of pulse wave on aerothermodynamics properties and structural mechanical behavior of blunt cone were investigated. The results show that the development of the pulse disturbance was captured accurately by using numerical methods. The bow shock was bent obviously under the action of pulse wave; the amplitude of pulse wave was enlarged several and even dozens of times relative to that of initial disturbance in free-stream, and eddy was generated near the wall surface region while being subjected to perturbation wave. In addition, the aerothermodynamics properties and structural mechanical properties were influenced obviously; the aero-thermodynamics parameters on the wall of nose were significantly different from that on the wall of non-nose; the former changed more sharply than the latter; and the latter has a linear growth along the stagnation line.关键词
脉冲扰动/高超音速流动/钝锥/高阶精度/直接数值模拟Key words
pulse perturbation/ hypersonic flow/ blunt cone/ high-order accuracy/ direct numerical simulation分类
数理科学引用本文复制引用
王振清,唐小军,孟祥男,吕红庆..钝锥高超音速绕流脉冲扰动研究[J].哈尔滨工程大学学报,2013,34(3):298-305,8.基金项目
教育部博士点基金资助项目(20112304110015) （20112304110015）
中央高校基本科研业务费资助项目(HEUCF100204,HEUCF110204). （HEUCF100204,HEUCF110204）
