实验流体力学2013，Vol.27Issue(2)：82-86,5.
激波风洞流场密度测量的聚焦纹影技术
Focusing schlieren technique applied to measure the flow density in shock tunnel
谢爱民 1黄洁 1徐翔 1吕治国 1宋强 1郑蕾 1柳森1
作者信息
摘要
Abstract
To achieve the quantitative measurement of flow density, the focusing schlieren system has been developed in the shock tunnel. The system has the characteristic of focusing on some region, and the flow density variety information of the focusing region can be gotten. According to the focusing schlieren imaging theory, the math model of density calculation has been set up; the flow density of the region can be gotten after the grey degree changes of focusing schlieren images gotten before experiment and in experiment are processed. The flow density of experiment measurement has been compared with numerical simulation, and their density change rules are in good agreement, which improves that it is feasible to measure flow density using focusing schlieren technique.
关键词
聚焦纹影/流动显示/密度测量/激波风洞Key words
focusing schlieren/flow visualization/density measurement/shock tunnel分类
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谢爱民,黄洁,徐翔,吕治国,宋强,郑蕾,柳森..激波风洞流场密度测量的聚焦纹影技术[J].实验流体力学,2013,27(2):82-86,5.
