URANS simulations of the tip-leakage cavitating flow with verification and validation procedures

作     者：Huai-yu Cheng Xin-ping Long Yun-zhi Liang Yun Long Bin Ji 程怀玉;龙新平;梁蕴致;龙云;季斌

作者机构：State Key Laboratory of Water Resources and Hydropower Engineering ScienceSchool of Power and Mechanical EngineeringWuhan UniversityWuhan 430072China Hubei Key Laboratory of Waterjet Theory and New TechnologyWuhan UniversityWuhan 430072China Science and Technology on Water Jet Propulsion LaboratoryShanghai 200011China 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2018年第30卷第3期

页      面：531-534页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.51576143,11772239 and 91752105) the Science and Technology on Water Jet Propulsion Laboratory(Grant No.61422230101162223002) 

主　　题：Cavitation computational fluid dynamics(CFD) tip-leakage vortex(TLV) verification and validation(V&V) 

摘      要：In the present paper, the Vortex Identified Zwart-Gerber-Belamri（VIZGB） cavitation model coupled with the SST-CC turbulence model is used to investigate the unsteady tip-leakage cavitating flow induced by a NACA0009 hydrofoil. A qualitative comparison between the numerical and experimental results is made. In order to quantitatively evaluate the reliability of the numerical data, the verification and validation（V＆V） procedures are used in the present paper. Errors of numerical results are estimated with seven error estimators based on the Richardson extrapolation method. It is shown that though a strict validation cannot be achieved, a reasonable prediction of the gross characteristics of the tip-leakage cavitating flow can be obtained. Based on the numerical results, the influence of the cavitation on the tip-leakage vortex（TLV） is discussed, which indicates that the cavitation accelerates the fusion of the TLV and the tip-separation vortex（TSV）. Moreover, the trajectory of the TLV, when the cavitation occurs, is close to the side wall.