An Experimental Study on the Propagation Characteristics of the Shock Waves and Contact Surfaces in the Microscopic Channels

我们开发和评估了一种新的diaghragmless驱动部分。结果表明，该新型驱动段非常适合于小直径激波管中的激波产生。测量了小直径激波管端部的压力。因此，确认了冲击波在2至6mm直径范围内的传播。此外，实验结果表明偏离理想理论。随着激波管直径的减小，偏差增大。此外，我们开发了非接触式测量方法，以澄清冲击波传播的特性。冲击波测量是在沿管沿着的任意测量位置处进行的。因此，它是实验澄清，所开发的方法是非常有效的参数测量，所造成的传播的冲击波的速度和冲击波的密度变化可以检测。

We developed and estimated a novel diaghragmless driver section. It is confirmed that the novel driver section is highly suitable for the shock wave generation in small diameter shock tubes. The pressure at the end of the small diameter shock tubes is measured. As a consequence, the shock wave propagation in the range from 2 to 6mm diameter is confirmed. Moreover, the experimental results show the deviation from the ideal theory. The deviation becomes increasing with decreasing the shock tube diameter. Additionally, we developed the contactless measurement method to clarify the characteristics of the shock wave propagation. The shock wave measurement is performed at arbitrary measurement position along the tubes. As a consequence, it is experimentally clarified that the developed method is very effective in the parametrical measurements, caused by that the velocity of the propagating shock wave and the density change across the shock wave can be detected.