华中科技大学学报（自然科学版）2024，Vol.52Issue(12)：85-93,9.DOI:10.13245/j.hust.241210
近壁区尺寸相近双空泡溃灭动态特性数值分析
Numerical analysis of collapsing characters of two approximately equal-size bubbles near wall
摘要
Abstract
The compressible volume of fluid(VOF)method was employed to numerically study the dynamics of two bubbles in a column at fixed distances from each other.The accuracy of the current numerical calculation was verified through the mesh and computational domain independence study and also validated by comparing with single bubble experimental results.Through comparing and analyzing the dynamic characteristics and instantaneous morphology of single and two bubbles at different near-wall distances,it is found that the instantaneous morphology and collapse time of bubble are both changed due to bubbles'interaction.The maximum velocity and driving pressure of the microjet when the near-wall bubble is about to the collapse increase significantly,and the increasement extent decreases with the increasing of the bubbles'distance.In addition,the lifespans of the upper and lower bubbles are both delayed,and the influence of the upper bubble on the lifespan of the near-wall bubble tends to be consistent when the stand-off distance of the near-wall bubble is ≥2.关键词
双空泡/尺寸相近/微射流/空泡溃灭动力/空泡生命周期Key words
two bubbles/approximated size/micro-jet/bubble collapse dynamics/bubble lifespan分类
能源科技引用本文复制引用
田中杰,耿琳琳,张成华,张德胜..近壁区尺寸相近双空泡溃灭动态特性数值分析[J].华中科技大学学报（自然科学版）,2024,52(12):85-93,9.基金项目
国家自然科学基金青年基金资助项目(52409115) （52409115）
江苏省自然科学基金青年项目(BK20220538) （BK20220538）
江苏省研究生科研与实践创新计划资助项目(SJCX24_2434). （SJCX24_2434）
