A numerical study of unsteady cavitation on a hydrofoil by LES and URANS method

被引：6
|
作者：
Li, Zi-ru [1 ]
Zhang, Guang-ming [1 ]
He, Wei [1 ]
van Terwisga, Tom [2 ,3 ]
机构：
[1] Wuhan Univ Technol, Wuhan 430063, Hubei, Peoples R China
[2] Delft Univ Technol, NL-2628 CD Delft, Netherlands
[3] Maritime Res Inst Netherlands, NL-6700 AA Wageningen, Netherlands
来源：
9TH INTERNATIONAL SYMPOSIUM ON CAVITATION (CAV2015) | 2015年 / 656卷
关键词：
D O I：
10.1088/1742-6596/656/1/012157
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this paper, the unsteady cavitation phenomena on a NACA0015 hydrofoil is numerically simulated by unsteady Reynolds-Averaged Navier-Stokes (URANS) method and Large Eddy Simulation (LES) in single-fluid approaches to multiphase modelling, respectively. It is observed that the large-scale structures and characteristic periodic shedding predicted by the URANS with the modified SST k-omega turbulence model show a good qualitative match with the experimental observations but with quantitative discrepancies, such as a different cavity length and volume, and a different location of shedding. Compared to the URANS results, the LES results reproduce more details of unsteady dynamics with an improved quantitative agreement.
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页数：4
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