Dynamic measurements in non-uniform flows

被引：0
|
作者：
A. P. Ershov
机构：
[1] Russian Academy of Sciences,Lavrentyev Institute of Hydrodynamics, Siberian Branch
来源：
Shock Waves | 2018年 / 28卷
关键词：
Shocks and detonations; Heterogeneous media; Electromagnetic method; VISAR;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The response of gauges registering the flow velocity and pressure in highly non-uniform media (for example, a powder under shock compression or powdered low-density explosive) is simulated. The modeling employs an acoustic approach. Against the average level of the signal, the fluctuations generated by the heterogeneity of the medium are observed which may distort the results completely. For reliable measurements, gauges larger than the characteristic scale of the medium non-uniformity are required. Under this condition, electromagnetic flow measurements and the velocity interferometer system for any reflector (VISAR) produce quite similar flow velocity profiles with small level of noise.
引用
收藏
页码：743 / 749
页数：6
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