Three-dimensional dynamics of a single bubble rising near a vertical wall:Paths and wakes  

作　　者：Hong-jie Yan He-Yang Zhang Hui-Min Zhang Yi-Xiang Liao Liu Liu 

机构地区：[1]School of Energy Science and Engineering,Central South University,Changsha,410083,PR China [2]Institute of Fluid Dynamics,Hemholtz-zentrum Dresden-Rossendorf,D-01328,Dresden,Germany

出　　处：《Petroleum Science》2023年第3期1874-1884,共11页石油科学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.51906262);the Hunan Provincial Natural Science Foundation of China(Grant No.2020JJ5735).

摘　　要：In order to clarify the migration mechanism and wake behavior of a single bubble rising near a vertical wall,three-dimensional direct numerical simulations are implemented based on the open-source soft-ware Basilisk and various types of migration paths like linear,zigzag and spiral are investigated.The volume of fluid(VOF)method is used to capture the bubble interface at a small scale,while the gas-liquid interface and high-velocity-gradient regions in the flow field are encrypted with the adaptive mesh refinement technology.The results show that the vertical wall has an obstructive effect on the diffusion of the vortex boundary layer on the surface of the bubble migrating in a straight line,and the resulting reaction force tends to push the bubbles away from the wall surface.For the zigzag or spiral movement of a bubble in the x-y plane,the perpendicular wall is an unstable factor,but on the contrary,the motion in the z-y plane is stabilized.

关 键 词：BUBBLE Wall effect TRAJECTORY Wake structure VOF Basilisk 

分 类 号：TE151[石油与天然气工程—油气勘探]