A辑第34卷第4期 水动力学研究与进展 Vol, 34. No, 4 2019年7月 CHINESE JOURNAL OF HYDRODYNAMICS DOI:10.16076/ cnki chd.201904.002 基于 Level set方法的不同湍流模型在 水翼空化流计算中的应用研究* 伏雨,于安2,季斌,龙新平 (1.武汉大学动力与机械学院,湖北武汉430072,E-mal:fuyuwhu@whu.edu.cn;, 2.河海大学能源与电气学院,江苏南京211100 摘要:该文以二维翼型NACA0015为研究对象,基于 Level set方法耦合 zwart空化质量传递模型,采用四种湍流 模型分别模拟了水翼诱导的非定常空化流过程,计算结果与实验的对比表明:标准k模型无法准确预测尾部空泡的断 裂和脱落,通过滤波器模型修正湍流黏性后可以正确预测空泡演变规律;PANS模型参数取值0.时,可以得到满意 的空泡演变规律:SAS-SST湍流模型在处理大分离流动上存在明昰优势,对尾部空泡周期性脱落规律预测较好。空泡体 积变化和监测点压力脉动频率的关系表明空化的发生和演变是空化区域内压力脉动产生的主要原因 关镳词:空化:湍流模型: Level set方法:压力脉动 中图分类号:O359.1 文献标志码 Evaluation of turbulence models for hydrofoil cavitating flows based on Level set method FU Yu, YU An, JI Bin, LONG Xin-ping (1. School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, Hubei, China; 2. College of Energy and Electrical Engineering, Hohai University, Nanjing211100, Jiangsu, China) Abstract: The unsteady cavitating flow around a two-dimensional naCAoo15 hydrofoil was simulated based on the leve set method and zwart cavitation model, Four turbulence models were used to investigate their effects on predicting the evolution of cavitation structures. Compared with the experimental data, it is noted that the standard k-E turbulence model can not predict the crack and shedding of the cavitation at the tail of the hydrofoil, and the addition of Fliter- Based Model to correct turbulent viscosity can accurately predict the evolvement of cavitation. a suitable value equal to 0.2 in predicting the cavitation structures is parameter f in the PANs model.The SAs-SST turbulence model has a significant advantage in dealing with large separation flow 收稿日期:2018-10-17(2019-04-18修改稿 基金项目:国家自然科学基金(51806058) 作者简介:伏雨(1995-),女,江苏连云港人,硕士 通讯作者:于安,E-mail:yuan@hhu.edu.cn Received: October 17, 2018( Revised April 18, 2019) Project supported by foundations: Supported by the National Natural Science Foundation of China(51806058) Biography: FU Yu(1995-) Female, Master Correspondingauthor:YUAn,E-mail:yuan@hhu.edu.cnDOI：10.16076/j.cnki.cjhd.2019.04.002 基于 Level set 方法的不同湍流模型在 水翼空化流计算中的应用研究* 伏雨 1 , 于安 2 , 季斌 1 , 龙新平 1 （1. 武汉大学动力与机械学院, 湖北 武汉 430072, E-mail: fuyuwhu@whu.edu.cn; 2. 河海大学能源与电气学院, 江苏 南京 211100） 摘 要：该文以二维翼型 NACA0015 为研究对象，基于 Level set 方法耦合 Zwart 空化质量传递模型，采用四种湍流 模型分别模拟了水翼诱导的非定常空化流过程，计算结果与实验的对比表明：标准 k-ε 模型无法准确预测尾部空泡的断 裂和脱落，通过滤波器模型修正湍流黏性后可以正确预测空泡演变规律；PANS 模型参数 fk 取值 0.2 时，可以得到满意 的空泡演变规律；SAS-SST 湍流模型在处理大分离流动上存在明显优势，对尾部空泡周期性脱落规律预测较好。空泡体 积变化和监测点压力脉动频率的关系表明空化的发生和演变是空化区域内压力脉动产生的主要原因。 关 键 词：空化；湍流模型；Level set 方法；压力脉动 中图分类号：O359.1 文献标志码：A Evaluation of turbulence models for hydrofoil cavitating flows based on Level set method FU Yu1 , YU An2 , JI Bin1 , LONG Xin-ping1 (1. School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, Hubei, China; 2. College of Energy and Electrical Engineering, Hohai University, Nanjing211100, Jiangsu, China) Abstract: The unsteady cavitating flow around a two-dimensional NACA0015 hydrofoil was simulated based on the Level set method and Zwart cavitation model. Four turbulence models were used to investigate their effects on predicting the evolution of cavitation structures. Compared with the experimental data, it is noted that the standard k-ε turbulence model can not predict the crack and shedding of the cavitation at the tail of the hydrofoil, and the addition of Fliter-Based Model to correct turbulent viscosity can accurately predict the evolvement of cavitation. A suitable value equal to 0.2 in predicting the cavitation structures is parameter fk in the PANS model.The SAS-SST turbulence model has a significant advantage in dealing with large separation flows * 收稿日期: 2018-10-17(2019-04-18 修改稿) 基金项目: 国家自然科学基金(51806058) 作者简介: 伏雨(1995－), 女, 江苏连云港人, 硕士. 通讯作者: 于安, E-mail: yu_an@hhu.edu.cn Received: October 17, 2018 (Revised April 18, 2019) Project supported by foundations: Supported by the National Natural Science Foundation of China(51806058) Biography: FU Yu (1995–), Female, Master. Corresponding author: YU An, E-mail: yu_an@hhu.edu.cn