排灌机械工程学报2026，Vol.44Issue(2)：148-155,8.DOI:10.3969/j.issn.1674-8530.24.0126
二维Clark-Y水翼云空化球形空泡动力学特性
Dynamic characteristics of spherical cavitation bubbles in two-dimensional Clark-Y hydrofoil cloud cavitation
摘要
Abstract
In order to study the dynamic characteristics of cavitation during the periodic evolution of cloud cavitation,a one-way coupled Euler-Lagrangian hydrodynamic cavitation simulation method was proposed based on the homogeneous flow model and the discrete phase model.Numerical calculations were carried out for the cloud cavitation flow over a two-dimensional Clark-Y hydrofoil with a cavitation number of σ=0.8,and the instantaneous lift coefficient and cloud cavitation evolution on the suction surface of the hydrofoil were obtained.By solving the spherical cavitation dynamics equation,the evo-lution pattern of cavitation dynamics in the cloud cavitation area of the hydrofoil was also acquired.The research results indicate that this numerical method effectively simulates the periodic behavior of cavita-tion in hydrofoils during the cloud cavitation.The intensity of the pressure on tracer particles along their paths is influenced by the position of cavitation shedding and collapse.The internal pressure of the cavitation is related to its subjected flow field pressure.The more drastic the flow field pressure change,the higher the amplitude of the internal pressure of the cavitation,and the larger the pressure wave released by its collapse.When the cavitation radius shrinks to 15.7 μm,the maximum amplitude of its collapse pressure can reach 69.800 MPa.As the initial radius of the cavitation increases,the am-plitude of cavitation internal pressure decreases,and the cavitation morphology remains basically stable.The research method in this paper can provide a theoretical reference for the study of spherical cavitation dynamics in other types of large hydraulic machinery.关键词
云空化/空泡动力学/Clark-Y水翼/大涡模拟/单向耦合Key words
cloud cavitation/cavitation dynamics/Clark-Y hydrofoil/large-eddy simulation/one-way coupling分类
农业科技引用本文复制引用
洪锋,郭泽霖,袁喜,刘书畅,黄笛,贾金平,雷恩宏,黄应平..二维Clark-Y水翼云空化球形空泡动力学特性[J].排灌机械工程学报,2026,44(2):148-155,8.基金项目
国家自然科学基金资助项目(22136003) （22136003）
湖北省自然科学基金资助项目(8246106) （8246106）
三峡库区生态环境教育部工程研究中心(三峡大学)开放基金资助项目(KF2023-01) （三峡大学）
