上海交通大学 a. 船舶海洋与建筑工程学院； b. 高新船舶与深海开发装备协同创新中心， 上海 200240
出版日期:2018-06-28发布日期:2018-06-28通讯作者:傅慧萍(1972-)，女，江西省宜春市人，博士，副教授，主要研究方向为船舶流体力学.E-mail: fuhp@sjtu.edu.cn.通信作者：李杰，男，博士，副研究员，E-mail: lijie@sjtu.edu.cn.基金资助:国家自然科学基金资助项目（11572194）Numerical Simulation of Cavitating Flow Around an Under-Loading Propeller
FU Huiping，LI Jiea. School of Naval Architecture, Ocean and Civil Engineering； b. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, China
Online:2018-06-28Published:2018-06-28Supported by:摘要/Abstract
摘要： 以PPTC′11(Potsdam Propeller Test Case 2011)桨为研究对象，基于均质混合流模型及ZGB和Sauer空化模型，通过对网格形式、网格密度和空化参数的探讨，对第2届船舶推进器国际研讨会(SMP′11)上的轻载空化算例Case 2.3.3进行了螺旋桨空化流场及水动力数值计算.结果表明：轻载下的螺旋桨推力系数和转矩系数对网格密度要求较高；给出的计算方法可准确预报螺旋桨水动力及梢涡与叶背、叶面片空泡；螺旋形网格是一种有前景的梢涡空泡捕捉方式；含气率及气核密度等参数对计算结果的影响较大.
关键词: 螺旋桨, 梢涡, 空泡, 数值模拟
Abstract: Numerical simulation of under-loading propeller cavitation and hydrodynamic thrust and torque coefficients were carried out by calculating the Case 2.3.3 of propeller model of Potsdam Propeller Test Case 2011. The research was done through discussion on different meshing patterns, meshing densities, cavitation parameters based on the homogeneous mixture flow model and the ZGB and Sauer cavitation models. It is shown that the correct calculation of thrust and torque coefficients on the under-loading condition needs finer meshing; the methods put forward here can predict correctly KT and KQ, tip vortex, cavities on both suction side and pressure side; the spiral mesh is a promising gridding method to succeed in capturing tip vortex cavitation; the nucleation site volume fraction and the bubble number density are two parameters which have important effects on the computed results.
Key words: propeller, tip vortex, tip vortex cavitation, numerical simulation
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