哈尔滨工程大学学报2023，Vol.55Issue(10)：1814-1824,1848,12.DOI:10.11990/jheu.202110066
双粗糙元对高超音速边界层感受性的影响
Effects of two roughness elements on the receptivity of the hypersonic bound-ary layer
摘要
Abstract
In order to reveal the mechanism of the effect of roughness elements on the hypersonic boundary layers receptivity,the hypersonic flow field around a blunt cone and its boundary layer were simulated directly in this paper using a high-order finite difference method.Then,we analyzed the effect of the combination of double-wall rough elements on the hypersonic steady flow field and the flow state in the boundary layer.Based on the obtained results,we explored the sensitivity mechanism of the hypersonic boundary layer under the action of pulsed slow sound waves by combining this with the fast Fourier transform method.The results showed the double-wall rough element led to the formation of a new wave system in the hypersonic flow field.The dominant mode gradually decreased in the process of the disturbance wave propagating downstream,and the phenomenon of mode competition was observed.Furthermore,the combination type of double roughness elements had a certain influence on the propagation of different types of disturbance waves in the boundary layer significantly inhibits the evolution of dominant mode in the downstream region.关键词
壁面粗糙元/脉冲慢声波/高超音速/边界层/感受性/快速傅里叶变换/直接数值模拟/慢声波Key words
roughness element/pulse acoustic wave/hypersonic/boundary layer/receptivity/Fast Fourier Transform/direct numerical simulation/slow acoustic wave分类
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史明方,徐立丹,唐小军,王振清..双粗糙元对高超音速边界层感受性的影响[J].哈尔滨工程大学学报,2023,55(10):1814-1824,1848,12.基金项目
国家自然科学基金项目(12032004) （12032004）
内蒙古自治区自然科学金项目(2020BS01007) （2020BS01007）
内蒙古科技大学创新基金项目 （）
内蒙古科技大学基本科研业务费项目(2022081). （2022081）
