Experimental and Numerical Study of Dynamic Behavior of Bubble around Vertical Boundary under Hypobaric Condition

doi:10.3969/j.issn.1000-1093.2015.09.014

Abstract

Abstract: In order to research the interaction between near-field bubble and nearby boundaries, a multi-function experimental apparatus operating under reduced air pressure is designed. A three-dimensional numerical model is established based on the potential flow theory. By comparison of experimental and simulated results, the numerical model is found to have good accuracy in simulating the bubble oscillation in the first period. Besides, the motion of bubble near a vertical wall after the first period is studied experimentally. The toroidal motion of the bubble after being penetrated by the jet is studied under different buoyancy effects; the variation of the jet angle with the standoff distance is shown. The work provides reference for relevant numerical and experimental studies in structural damage induced by bubbles.

Key words: explosion mechanics, pressure reduction, bubble, boundary, numerical simulation, experiment

CLC Number:

CUI Jie， ZHOU Sai-bei， WANG Yi， HE Bao. Experimental and Numerical Study of Dynamic Behavior of Bubble around Vertical Boundary under Hypobaric Condition[J]. Acta Armamentarii, 2015, 36(9): 1696-1703.

References

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