Influences of different forces on the bubble entrainment into a stationary Gaussian vortex

作     者：ZHANG AMan NI BaoYu 

作者机构：College of Shipbuilding EngineeringHarbin Engineering University 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2013年第56卷第11期

页      面：2162-2169页

核心收录：

学科分类：08[工学] 0824[工学-船舶与海洋工程] 082401[工学-船舶与海洋结构物设计制造] 

基　　金：supported by the Excellent Young Scientists Fund(Grant No.51222904) the national natural science foundation of China(Grant No.11302056) 

主　　题：bubble entrainment gaussian vortex trajectory split 

摘      要：Simulations of bubble entrainment into a stationary Gaussian vortex are performed by using the combined particle tracking method(PTM)and boundary element method(BEM).Before the bubble is captured by the vortex core,oscillation and migration of the quasi-spherical nucleus are solved by using improved RP equation and the momentum theorem in the Lagrangian reference frame simultaneously,and the trajectory of the nucleus presents a kind of reduced helix *** captured by the vortex core,the bubble grows immediately and moves and deforms along the vortex core *** non-spherical evolution and deformation of the bubble is simulated by adopting a mixed Eulerian-Lagrangian *** output of quasi-spherical stage is taken as the input of non-spherical stage,and all the behaviors of the entrained bubble can be simulated such as inception,motion,deformation and *** results agree well with published experimental *** this basis,the influences of various factors such as viscosity,surface tension,buoyancy are studied *** the results from this paper would provide some insight into the control on vortex bubble entrainment.