Experimental investigation of shock wave diffraction over a single- or double-sphere model

被引：0
作者：
L. T. Zhang
T. H. Wang
L. N. Hao
B. Q. Huang
W. J. Chen
H. H. Shi
机构：
[1] Zhejiang Sci-Tech University,School of Mechanical Engineering and Automation
来源：
Shock Waves | 2017年 / 27卷
关键词：
Shock wave; Double-sphere model; Unsteady drag; Drag coefficient; Interference;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this study, the unsteady drag produced by the interaction of a shock wave with a single- and a double-sphere model is measured using imbedded accelerometers. The shock wave is generated in a horizontal circular shock tube with an inner diameter of 200 mm. The effect of the shock Mach number and the dimensionless distance between spheres is investigated. The time-history of the drag coefficient is obtained based on Fast Fourier Transformation (FFT) band-block filtering and polynomial fitting of the measured acceleration. The measured peak values of the drag coefficient, with the associated uncertainty, are reported.
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页码：97 / 107
页数：10
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