中国舰船研究2023，Vol.18Issue(6)：30-38,9.DOI:10.19693/j.issn.1673-3185.03089
螺旋桨空化仿真相关模型比较研究
Comparative study on related models of propeller cavitation numerical simulation
摘要
Abstract
[Objective]The purpose of this paper is to study the effects of cavitation models on the simula-tion of full-scale propeller cavitation.[Methods]The minimum rotational speed of the propeller required for cavitation is predicted by the Bernoulli equation,and the propeller's cavitation condition is observed by full-scale experiment.After determining the boundary layer mesh thickness and establishing the hydrodynam-ic model,meshes are generated.In the numerical simulation,the turbulence model is selected from either the standardk-ε model or Realizablek-ε model,and the cavitation model is selected from either the Schnerr-Sauer(S-S)model or the Zwart-Gerber-Belamri(ZGB)model.The maximum gas volume fraction on the surface of the propeller is tracked and recorded.In the meantime,the reliability of the numerical simulation is evaluated by observing the gas distribution on the surface of the propeller.And the simulation accuracy of the related models is compared.[Results]The simulation results show that compared with the standardk-ε turbulence model,the cavitation region obtained with the Realizablek-ε model is significantly more consist-ent with the experimental results.By monitoring the maximum gas volume fraction on propeller's surface,it is found that the choice of turbulence model has little effect on the cavitation intensity,and the cavitation intens-ity obtained by S-S model is significantly higher than that obtained by the ZGB model.[Conclusions]This study shows that the turbulence model has a great influence on the area of the cavitation region,and cavitation models have a great influence on cavitation intensity.In terms of the simulation of propeller cavitation,the ac-curacy of the Realizablek-ε model is higher than that of the standardk-ε model.关键词
螺旋桨/数值模拟/湍流模型/空化模型Key words
propeller/numerical simulation/turbulence model/cavitation model分类
交通工程引用本文复制引用
时嘉昊,张大海,许士华,陈宇婷,秦声雷,刘旭,侯国祥..螺旋桨空化仿真相关模型比较研究[J].中国舰船研究,2023,18(6):30-38,9.基金项目
工业和信息化部高技术船舶科研计划资助项目(2020307) （2020307）
