基于VOF法的近自由面水下爆炸气泡运动数值模拟  

Numerical Study on Bubble Motion by Underwater Explosion Near Free Surface Based on VOF

作　　者：李健[1] 黄红生[1] 林贤坤[1] 荣吉利[2] 项大林[2] 

机构地区：[1]广西科技大学广西汽车零部件与整车技术重点实验室,广西柳州545006 [2]北京理工大学宇航学院,北京100081

出　　处：《北京理工大学学报》2016年第2期122-127,共6页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(51209042;11272057)

摘　　要：对于近水面水下爆炸气泡的运动特性,在结合SOLA算法差分格式,利用投影算法对气泡的控制方程进行数值求解的基础上,基于VOF法进行了数值模拟,并利用MSC.DYTRAN软件进行仿真分析,通过对两者的分析结果对比研究.结果表明,基于结合SOLA算法差分格式的投影算法,利用VOF法可对水下爆炸气泡各时刻的运动界面进行较精确的捕捉和重构,从而实现精确追踪水下爆炸气泡脉动全物理过程的运动界面.同时,也研究了距离参数对气泡坍塌、射流及环状气泡的影响,掌握了距离参数对近水面水下爆炸气泡运动特性的影响.The difference format of SOLA and projection algorithm were introduced to solve the control equation of bubble motion in underwater explosion.The dynamic behavior of bubble near free surface was simulated and analyzed with VOF and MSC.DYTRAN software. The computational results show that the VOF method can accurately track and reconstruct the motion of bubbles based on projection algorithm combined with the SOLA difference format.The interactions between bubble and free surface were studied systematically and summarized the dynamic behaviors of bubbles,including the influence of distance parameter on bubble collapse,eject and annularity bubble,that have close relation with distance parameter.

关 键 词：投影算法 SOLA算法 气泡 VOF法 水下爆炸 界面追踪 

分 类 号：O352[理学—流体力学]