Interferometric signal measurement of shock waves and contact surfaces in small scale shock tube
Interferometric signal measurement of shock waves and contact surfaces in small scale shock tube
复制标题
小型激波管中激波和接触面的干涉信号测量
DOI：
10.1007/978-3-540-85181-3_101
复制
发表时间：
2009
期刊：
影响因子：
2.2
通讯作者：
W. Garen
中科院分区：
文献类型：
--
作者：
S. Udagawa;K. Maeno;I. Golubeva;W. Garen
本研究利用由GALEN研制的直径为3 mm的微型激波管，采用准直和偏振激光束进行干涉信号测量，在几种压力条件下进行了实验。结果表明，在该微型激波管中，激波不是以恒定速度传播的。本文还利用二维轴对称N-S方程进行了数值模拟，并与实验结果进行了比较。在x-t图上给出了实验结果和数值计算结果。证实了试验气体与壁面摩擦力的影响产生了图的x-t曲线倾角的差异。
In this study we have performed the experiment under the several pressure conditions by using the mini-shock tube of 3mm diameter, which was developed by Garen, by using the interferometric signal measurement with the collimated and polarized laser beams. It is confirmed that the shock waves do not propagate at constant velocity in this mini-shock tube. We have also performed a numerical simulation by using two-dimensional and axi-symmetric N-S equation to compare with the experimental results. The experimental results are shown with the numerical results on the x-t diagram. It is confirmed that the influence of the friction between the test gas and the wall produces the difference between the inclinations of x - t curves of the diagram.