Experimental study on bubble oscillation formed during underwater explosions

WANG Bin; ZHANG Yuan-ping; WANG Yan-ping

doi:10.11883/1001-1455(2008)06-0572-05

Volume 28 Issue 6

Sep. 2014

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JIN Peng-gang, CHANG Hai, CHEN Zhi-qun. Studies on kinetics and mechanisms of thermal decomposition of 1,1-diamino-2,2-dinitroethylene (FOX-7)[J]. Explosion And Shock Waves, 2006, 26(6): 528-531. doi: 10.11883/1001-1455(2006)06-0528-04

Citation:

WANG Bin, ZHANG Yuan-ping, WANG Yan-ping. Experimental study on bubble oscillation formed during underwater explosions[J]. Explosion And Shock Waves, 2008, 28(6): 572-576. doi: 10.11883/1001-1455(2008)06-0572-05

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Experimental study on bubble oscillation formed during underwater explosions

doi: 10.11883/1001-1455(2008)06-0572-05

1.
Laboratory for Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China

Publish Date: 2008-11-25

Abstract

Abstract

Dynamics of bubble oscillation formed during underwater explosions were studied in a water tank. The expansion and collapse of the bubble pictures created by the explosion of the short length-diameter ratio(1.05) PETN were captured by a high-speed camera. The geometry of the bubble is approximately spherical. The radius and period of oscillation of the bubble increment with the charge weight. The position of the bubble is almost constant during its expansion, but when the bubble is growing smaller, the bubble rises more distinctly. The contract velocity in the bottom of bubble is faster than that of the up surface caused by the influence of gravity; a water jet was formed at the last stages of the bubble collapse.
- mechanics of explosion,
- bubble oscillation,
- underwater explosion,
- water jet