Numerical simulation of hydrofoil cavitation based on filter-based model

被引：4
|
作者：
Tan L. [1 ]
Cao S. [1 ]
机构：
[1] State Key Laboratory of Hydroscience and Engineering, Department of Thermal Engineering, Tsinghua University
来源：
Jiangsu Daxue Xuebao (Ziran Kexue Ban)/Journal of Jiangsu University (Natural Science Edition) | 2010年 / 31卷 / 06期
关键词：
Cavitation model; Filter-based model; Numerical simulation; Re-entrant jet; State equation;
D O I：
10.3969/j.issn.1671-7775.2010.06.014
中图分类号：
学科分类号：
摘要：
Based on the cavitation model of state equation with the barotropic fluid assumption, and by introducing the filter function to modify the RNG k-ε turbulence model, the Navier-Stokes equation is solved with SIMPLEC algorithm to simulate both steady and unsteady cavitating flow around a hydrofoil. The calculated pressure distributions on foil section agree well with the experimental results. The periodic and the complex phenomenon of evolution of unsteady cavitating flow is well simulated. The strouhal number coincides with the experiment results. The velocity vector distribution around the foil and the internal flow structure of the cavity are analyzed. The local pressure rise on hydrofoil surface and the break-off process are mainly caused by the re-entrant jet.
引用
收藏
页码：683 / 686
页数：3
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