水力发电学报2024，Vol.43Issue(10)：63-75,13.DOI:10.11660/slfdxb.20241006
通孔平板附近空化泡动力学特性数值模拟研究
Numerical study on dynamic behaviors of cavitation bubbles near through-hole flat plate
摘要
Abstract
The effectiveness of cavitation cleaning process is closely linked to the ratio of the distance between a cavitation bubble and the orifice plate to its maximum radius in this process.However,most of the previous studies on cavitation bubble dynamics in the vicinity of a through-hole flat plate were limited to the factors such as morphology and jet direction,with little attention given to jet strength or evolutionary period.In this work,a two-phase compressible cavitation bubble dynamics model is used to study the multi-period evolution dynamics of cavitation bubbles near a flat plate with a through-hole,based on the open source fluid dynamics code OpenFOAM.Simulation results reveal that the maximum velocity of the liquid jet,formed by cavitation bubble collapsing,decreases as the distance parameter γ increases when it reaches the center of the hole.As the size parameter ε decreases,this liquid jet's maximum velocity at the hole's center increases.And,with a decrease in γ or ε,the minimum radius of a cavitation bubble at its first collapse increases gradually,the intensity of bubble collapsing slows down,and the time period of the first collapse is prolonged.关键词
空化泡/通孔平板/液体射流/溃灭周期/OpenFOAMKey words
cavitation bubble/through-hole plate/liquid jet/collapse period/OpenFOAM分类
力学引用本文复制引用
马明凯,尹建勇,龚德鸿,张永学,杜先荣..通孔平板附近空化泡动力学特性数值模拟研究[J].水力发电学报,2024,43(10):63-75,13.基金项目
国家自然科学基金项目(52179094) （52179094）
贵州省省级科技计划项目(ZK[2023]一般069) （ZK[2023]一般069）
贵州大学自然科学专项(特岗)科研基金项目([2022]14 号) （特岗）
