Similarity relations of underwater explosion in centrifuge and pressurizing vessels

SONG Ge; LONG Yuan; ZHONG Mingshou; WANG min; WU Jianyu

doi:10.11883/bzycj-2017-0321

Volume 39 Issue 2

Feb. 2019

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SONG Ge, LONG Yuan, ZHONG Mingshou, WANG min, WU Jianyu. Similarity relations of underwater explosion in centrifuge and pressurizing vessels[J]. Explosion And Shock Waves, 2019, 39(2): 024102. doi: 10.11883/bzycj-2017-0321

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SONG Ge, LONG Yuan, ZHONG Mingshou, WANG min, WU Jianyu. Similarity relations of underwater explosion in centrifuge and pressurizing vessels[J]. Explosion And Shock Waves, 2019, 39(2): 024102. doi: 10.11883/bzycj-2017-0321

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Similarity relations of underwater explosion in centrifuge and pressurizing vessels

doi: 10.11883/bzycj-2017-0321

College of Field Engineering, Army Engineering University, Nanjing 210007, Jiangsu, China

Received Date: 2017-09-05
Rev Recd Date: 2017-12-05
Publish Date: 2019-02-05

Abstract

Abstract

The collective effect of underwater explosion shock wave and bubble pulsation does not meet the traditional geometric similarity relation, and the scaled model test must be carried out in a closed pressurized tank or centrifuge apparatus. Through the dimensional analysis and π theorem, the similarity theory of the model tests was deduced. The prototype condition and model conditions with the scaled ratio of 1/20 and 1/30 were simulated based on LS-DYNA, which shows the similarity relations and application scope of the pressurized model and centrifugal model. The shock wave, bubble radius and bubble period can meet the similarity relations but the bubble motion and jet can not meet the similarity relations in the pressurized model; and the shock wave and bubble pulsation almost meet the similarity relations in the centrifugal model.
- underwater explosion,
- model test,
- centrifugal model,
- pressurized model,
- LS-DYNA

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References(17)

References

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