减压条件下竖直边界附近气泡动力学行为数值与实验研究

doi:10.3969/j.issn.1000-1093.2015.09.014

兵工学报 ›› 2015, Vol. 36 ›› Issue (9): 1696-1703.doi: 10.3969/j.issn.1000-1093.2015.09.014

减压条件下竖直边界附近气泡动力学行为数值与实验研究

崔杰¹，周塞北¹，王逸¹，何宝²

（1.江苏科技大学船舶与海洋工程学院，江苏镇江 212003; 2.中国船舶科学研究中心江苏无锡 214082）

收稿日期:2015-03-04 修回日期:2015-03-04 上线日期:2015-11-20
通讯作者: 崔杰 E-mail:cuijie2006@hotmail.com
作者简介:崔杰（1984—），男，讲师，博士
基金资助:
国家自然科学基金青年基金项目（51409129、51409128）；江苏省自然科学基金青年基金项目（BK20140504）；江苏省高校自然科学研究项目（14KJB570001）

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

CUI Jie¹， ZHOU Sai-bei¹， WANG Yi¹， HE Bao²

(1.School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology,2China Ship Scientific Research Centre, Wuxi 214082, Jiangsu, China)

Received:2015-03-04 Revised:2015-03-04 Online:2015-11-20
Contact: CUI Jie E-mail:cuijie2006@hotmail.com

摘要/Abstract

摘要： 为深入探究气泡与边界的相互作用规律，设计了减压条件下气泡动力学实验方法，并基于势流理论，建立气泡与壁面相互作用的三维数值模型。将计算值与实验结果进行对比发现，二者吻合较好，数值模型可以较好地模拟气泡在第一周期与边界的相互作用。此外，开展减压电火花实验产生大尺度的气泡，研究气泡第一周期以后气泡与壁面的相互作用，得到计及浮力影响的气泡射流后形成环状气泡的运动形态，以及气泡射流角度随距离参数和浮力参数的变化规律，为气泡对结构的毁伤研究提供可行的数值和实验方法。

关键词: 爆炸力学, 减压, 气泡, 边界, 数值模拟, 实验

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

中图分类号:

崔杰，周塞北，王逸，何宝. 减压条件下竖直边界附近气泡动力学行为数值与实验研究[J]. 兵工学报, 2015, 36(9): 1696-1703.

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.

参考文献

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CUI Jie. Experimental study on underwater explosion bubble loads and damage on the structure nearby［D］. Harbin: Harbin Engineering University, 2013. (in Chinese)

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减压条件下竖直边界附近气泡动力学行为数值与实验研究

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

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