聚偏氟乙烯对高速气流的响应二级轻气炮分流系统特性的测量

The Response of PVF2 on High Velocity Gas-FluidObservations of the Behavior of Diffluence System for a Two Stage Light Gas Gun

1.
Southwest Institute of Fluid Physics, Chengdu 610003, China;
2.
Institute of Applied Physics, Chengdu University of Science and Technology, Chengdu 610065, China;
3.
Shanghai Institute of Organic Materials, Academia Sinica, Shanghai 200032, China

摘要: 本文介绍了一种适合于测量高速气流的聚偏氟乙烯（PVF2）压力传感器，这种传感器适用于测量各种小空间、非平面状样品表面对高速气流的响应。我们还研制了一套能可靠测得聚偏氟乙烯对高速气流响应的触发系统，它具有触发灵敏，使用可靠等优点。利用上述技术已成功地测得了二级轻气炮分流系统的分流效果，研究表明，采用多级分流后能使高速气流对靶的作用减弱90%，并且只需三块分流板即可满足实验要求。
- 聚偏氟乙烯 /
- 高速气流 /
- 分流
Abstract: A PVF2 (polyvinylidene fluorid) gauge, which is suitable for the measurements of the response of the curved surfaces in small space on high velocity gas fluid is described in this paper. A sensitive trigger system, with which the response of PVF2 to high velocity gas-fluid can be reliably measured, is also developed. The behavior of the diffluence system for a two stage light gas gun has been successfully observed by using this technique. The results show that actions of gas-fluid after diffluence on the target can be reduced rapidly to ten percent, and it will be sufficient for most experimental requirements if three diffluence plates are used.
- PVF2 /
- high velocity gas-fluid /
- diffluence