Evaluation of Turbulence Models for the Numerical Prediction of Time-dependent Cavitating Flow During Water Entry of a Semi-closed Cylinder; [DES模型在开放腔体圆柱壳入水空泡模拟计算中的应用及评价]

被引：0

作者：

Lu Z.-L. ^{[1
]}

Sun T.-Z. ^{[2
]}

Cui L. ^{[3
]}

Wei Y.-J. ^{[4
]}

机构：

[1] The System Design Insitute of Mechanical-Electrical Engineering, Beijing

[2] School of Naval Architecture, Dalian University of Technology, Dalian

[3] School of Astronautics, Harbin Institute of Technology, Harbin

来源：

Chuan Bo Li Xue/Journal of Ship Mechanics | 2018年 / 22卷 / 09期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Cavitating flow; DES; Perturbation; Water entry;

D O I：

10.3969/j.issn.1007-7294.2018.09.004

中图分类号：

学科分类号：

摘要：

During water entry of the semi-closed cylinder, the air in the cell interacts with the flow field around the cylinder, which generates time-dependent cavitating flow with perturbation. The k-ε model, k-ω model and detached eddy simulation (DES) model are selected to assess the state-of-the-art of computational capabilities for the special cavitating flow. The turbulence models mentioned above are evaluated and validated by comparing the numerical time evolution of cavitating flow with the experimental results. The results show that the DES model can better capture the unsteady phenomena including the cavity ripples, shedding, transition flow and multi-scales vortex. Furthermore, the formation mechanism of eddies around the cavity interface is analysed based on the boundary-layer theory. © 2018, Editorial Board of Journal of Ship Mechanics. All right reserved.

引用

页码：1087 / 1099

页数：12

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