Motion of free-surface of shock-compressed water on emergence of rarefaction
Motion of free-surface of shock-compressed water on emergence of rarefaction
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DOI：
10.1063/1.4932635
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发表时间：
2015-10-05
影响因子：
4
通讯作者：
Akiyama, H.
中科院分区：
文献类型：
--
作者：
Menezes, V.;Hosseini, H.;Akiyama, H.
本文对中等强度冲击波作用下自由水面的冲击运动进行了实验研究。这种物理过程在基于冲击波的微流体装置中产生初始加速度，其具有有前途的医疗和药物/DNA递送应用。水界面的速度通过实时高时间/空间分辨率可视化测量。基于修正的Tait状态方程和Reimann不变量的概念，推导出了卸载波后粒子速度的解析表达式。实验和分析证实，在冲击波后面的质量运动加速到非常高的速度，在微射流装置中的有效的动量传递的要求。(C)2015 AIP Publishing LLC.
We experimentally evaluated the impulsive motion of free-surface of water on impingement of shock-waves of moderate strength. This physical process creates the initial acceleration in shock-wave based micro-fluidic devices, which have promising medical and drug/DNA delivery applications. The velocities of the water interfaces were measured through real-time high-temporal/spatial resolution visualizations. Based on modified Tait equation-of-state and the concept of Reimann-invariants, an analytical expression was deduced to calculate the particle velocity behind the unloading wave. The experiments and analyses confirm that the mass motion behind the shock-wave accelerates to very high velocities, a requirement for effective momentum delivery in micro-jet devices. (C) 2015 AIP Publishing LLC.