摘要
本文采用边界元方法,研究了具有倾角的竖直壁面附近气泡与自由面的相互耦合作用.首先基于不可压缩势流理论,建立了边界元气泡动力学模型,并针对无限壁面附近的气泡和自由面作用问题,采用镜像法模拟了倾斜壁面的作用.然后,基于本文所建立的数值模型,分别计算了不同倾角的壁面对气泡和自由面水冢形态的影响,发现倾斜角度会导致自由面的边界条件不连续,从而对其运动产生明显的非线性影响.最后,分别分析了无浮力和有浮力情况下倾斜角度对其影响规律.
Study on the interaction between bubble and tree surtace near an inclined vertical wall is carried out in this paper. Firstly, boundary element model for bubble dynamics based on incompressible potential flow is established, and the solid wall is modeled using the images of bubble and free surface. Then, through the numerical model, bubble dynamics near the walls with various inclination angles are studied respectively. We find that the inclination would lead discontinuity of the boundary condition of intersection between free surface and solid wall, which can affect its motion nonlinearly. Finally, the influence of the inclination angle on the bubble and spike dynamics is analyzed.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2013年第21期259-268,共10页
Acta Physica Sinica
基金
国家安全重大基础研究项目子专题(批准号:613157)
优秀青年科学基金(批准号:51222904)
国防基础科研计划(批准号:B2420133001)
国家自然科学基金(批准号:11202057)资助的课题~~
关键词
水下爆炸
气泡动力学
倾斜壁面
自由面
underwater explosion, bubble dynamics, inclined wall, free surface
