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Sequential observation of rebound shock wave generated by collapse of vapor bubble in BOS system
Wang JZ(王静竹); Akihisa A; Shigeru N; Wang YW(王一伟); Huang CG(黄晨光)
2018-10-01
发表期刊Journal of visualization
卷号21期号:5页码:695-710
ISSN1343-8875
摘要

The paper reports on a pressure measurement of underwater shock waves generated by collapse of a vapor bubble using the background-oriented schlieren (BOS) technique. In the BOS system, the vapor bubble is induced by an underwater electric discharge. To estimate background-element displacement induced by the underwater shock wave, a spatiotemporal derivative (STD) algorithm is applied in image processing. Furthermore, the accuracy of the STD algorithm is evaluated using the images obtained with our BOS system relative to the cross-correlation method. Subsequently, the pressure distributions are obtained by solving the Poisson equation and applying a filtered-back projection algorithm. An experiment to visualize the behaviors of the underwater shock waves is also carried out using the shadowgraph method. As a result, the pressure waveforms estimated by the BOS technique keep consistent with that in experimental profiles. The pressure attenuations behind the underwater shock wave are also in good agreements with the experimental measurements. It is expected that the BOS technique will probably overcome the problems associated with the conventional method of pressure measurement related to the collapse of microbubbles, and becomes a promising means of quantitatively measuring high-speed phenomena.

关键词Pressure Measurement Underwater Shock Wave Collapse Of Vapor Bubble High-voltage-power Supply Bos Technique Std Algorithm
DOI10.1007/s12650-018-0488-0
收录类别SCI
语种英语
WOS记录号WOS:000443971400001
关键词[WOS]Background-oriented Schlieren ; Optical-flow
论文分区Q4
力学所作者排名1
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77666
专题流固耦合系统力学重点实验室
通讯作者Wang JZ(王静竹)
推荐引用方式
GB/T 7714
Wang JZ,Akihisa A,Shigeru N,et al. Sequential observation of rebound shock wave generated by collapse of vapor bubble in BOS system[J]. Journal of visualization,2018,21(5):695-710.
APA Wang JZ,Akihisa A,Shigeru N,Wang YW,&Huang CG.(2018).Sequential observation of rebound shock wave generated by collapse of vapor bubble in BOS system.Journal of visualization,21(5),695-710.
MLA Wang JZ,et al."Sequential observation of rebound shock wave generated by collapse of vapor bubble in BOS system".Journal of visualization 21.5(2018):695-710.
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