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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)
Source PublicationJournal of visualization
2018-10-01
Volume21Issue:5Pages:695-710
ISSN1343-8875
Abstract

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.

KeywordPressure Measurement Underwater Shock Wave Collapse Of Vapor Bubble High-voltage-power Supply Bos Technique Std Algorithm
DOI10.1007/s12650-018-0488-0
Indexed BySCI
Language英语
WOS IDWOS:000443971400001
WOS KeywordBackground-oriented Schlieren ; Optical-flow
ClassificationQ4
Ranking1
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77666
Collection流固耦合系统力学重点实验室
Corresponding AuthorWang JZ(王静竹)
Recommended Citation
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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