华中科技大学学报（自然科学版）2015，Vol.43Issue(10)：15-20,6.DOI:10.13245/j.hust.151004
空泡半径非线性变化的空化模型及应用
Cavitation model considering non-linear variation of bubble radius and its application
摘要
Abstract
Based on the Rayleigh-Plesset equation and equilibrium assumption ,a new cavitation model considering the non-linear variation of bubble radius was proposed to enhance the capability of predic-ting cavitating flows for Schnerr-Sauer model .Unsteady and turbulent cavitating flows around a two-dimensional Clark-Y hydrofoil were performed using the proposed model and original Schnerr-Sauer model ,respectively ,combined with the FBM turbulence model .The time-averaged lift and drag coef-ficients ,cavity shape evolution and x-velocity profiles at cloud cavitation were obtained from predic-tion .Comparing with other experimental data ,the time-averaged lift and drag coefficients predicted from proposed model agree better with experimental results than the original Schnerr-Sauer model and the proposed model can accurately predict the special characteristics of the time-averaged lift and drag coefficients during different cavitation numbers .Additionally ,the proposed model is more capable to predict the grow th ,shedding and collapse of the cloud cavity near the trailing edge and the flow struc-ture in the wake of cloud cavitation stage .关键词
空化流/水翼/空化模型/滤波器湍流模型/数值计算Key words
cavitating flow/hydrofoil/cavitation model/Filter-based model/numerical simulation分类
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洪锋,袁建平,周帮伦..空泡半径非线性变化的空化模型及应用[J].华中科技大学学报（自然科学版）,2015,43(10):15-20,6.基金项目
国家自然科学基金重点资助项目(51239005) （51239005）
江苏省普通高校研究生科研创新计划资助项目(KYLX-1040) （KYLX-1040）
江苏省高校优势学科建设工程资助项目(PAPD). （PAPD）
