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.
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.
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