Experimental and Numerical Study on the Bubble Dynamics near Two-Connected Walls with An Obtuse Angle

作者：LI Shi-min,CUI Pu,ZHANG Shuai,LIU Wen-tao,PENG Yu-xiang

摘要：This study is concerned with the dynamic characteristics of bubbles near two connected walls(one horizontal and the other inclined with an obtuse angle from the horizontal one). In this study, we set up an experiment system to conduct typical cases, and the boundary element method is employed to explain the bubble behavior and study the effect of relative parameters. Comparing the two mutually perpendicular walls, we find that the liquid jet deviates from the horizontal direction within a much shorter range. On the intersection of the two walls, the motions of bubbles have similar trends. The relatively low pressure between the bubble and walls causes the transition of the bubble, and a local high-pressure zone leads to the formation of a liquid jet. Moreover, there are moments when the two walls are evenly stressed in the first bubble cycle. Through parameter analysis, we find that the jet directions of bubbles perform interesting discrepancies for different buoyancy and distances to walls. Some instructive conclusions are given to serve practical applications.

发文机构：College of Shipbuilding Engineering

关键词：bubbledynamicssolidwallsliquidjets

分类号： O35[理学—流体力学]