A numerical study of steady and unsteady cavitation on a 2d hydrofoil

被引：22
|
作者：
Li, Zi-ru [1 ]
Pourquie, Mathieu [1 ]
Van Terwisga, Tom J. C. [1 ,2 ]
机构：
[1] Delft Univ Technol, Delft, Netherlands
[2] MARIN, Wageningen, Netherlands
来源：
JOURNAL OF HYDRODYNAMICS | 2010年 / 22卷 / 05期
关键词：
NACA0015; modified SST k-omega model; shedding; re-entrant jet; erosion risk;
D O I：
10.1016/S1001-6058(10)60029-7
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The steady and unsteady cavitation phenomena on a 2D NACA0015 hydrofoil predicted by the multiphase RANS code FLUENT are studied in this paper. Besides a numerical sensitivity study of the noncavitating condition, the present investigation focuses on two cavitation numbers: sigma = 1.6 (steady cavitating flow) and sigma = 1.0 (with dynamic shedding). With a modified SST k - omega turbulence model, a periodic shedding is revealed: the main sheet cavity breaks up by the re- entrant jet and a cloudy cavity forms and is convected with the downstream flow. Finally, the experience with FLUENT has been used to discuss the general ability of multiphase RANS codes to predict the cavitation erosion risk.
引用
收藏
页码：728 / 735
页数：8
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