NUMERICAL INVESTIGATION OF AIR BUBBLES EVOLUTION AND COALESCE FROM SUBMERGED ORIFICES BASED ON OPENFOAM

摘要：

　　With the help of the Volume of Fluid(VOF)model in OpenFOAM framework,the air bubbles evolution and coalescence behaviours from submerged orifices has been investigated.First,the air bubble formation and rising process from a submerged orifice with different air flow rate has been simulated according to Zhangs experiments.Results show that,with the increase of the air flow rate,collision and vertical coalescence occur as a result of the reinforced wake flow.The numerical experiment of the different spacing of the twin orifice shows that,horizontal coalescence only occur in the range when S/D<1.5.The results can provide useful reference for the mechanism of coalescence in boiling process.

关键词： Two-phase flow Bubble coalescence Bubble collision VOF OpenFOAM

作者: FENG PAN YING HE LI-ZHONG MU

作者单位: School of Energy and Power Engineering,Dalian University of Technology

会议类型: 国际会议

会议名称: The 13th OpenFOAM Workshop(第13届OpenFOAM国际研讨会)

会议地点: 上海

会议语种:英文

页码: 161-164

在线出版日期: 2018-06-24（万方平台首次上网日期，不代表论文的发表时间）