Numerical Simulation of Cavitating Flow around a Propeller
Numerical Simulation of Cavitating Flow around a Propeller
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螺旋桨周围空化流的数值模拟
DOI：
10.2534/jjasnaoe1968.2004.195_211
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
H. Yamaguchi
中科院分区：
文献类型：
--
作者：
T. Kawamura;Takayuki Watanabe;Yoshihisa Takekoshi;M. Maeda;H. Yamaguchi
本文介绍了CFD在船舶螺旋桨非空泡流和空泡流模拟中的应用。系统研究了湍流模型和网格分辨率对螺旋桨性能预测精度的影响，提出了获得与网格无关的推力和扭矩系数的条件。对两种常规螺旋桨进行了验证，结果表明，在非空化条件下，定量结果与实验结果一致。应用空化模型，模拟了均匀和非均匀两种情况下螺旋桨周围的空化流动。通过与实验的比较，可以定性地再现空腔形状和空腔体积的变化。然而，也有研究表明，目前的空化模型在精度和稳定性方面存在不足。
Applications of CFD to simulation of non-cavitating and cavitating flow around a marine propeller are presented in this paper. The influence of the turbulence model and the grid resolution on the accuracy of the propeller performance prediction has been systematically investigated, and the condition for obtainining grid-independent thrust and torque coefficients is proposed.Validations carried out for two conventional propellers have shown that quantitative agreement with experiment is achieved at non-cavitating condition. By applying a cavitation model, cavitating flows around a propeller both in uniform and non-uniform flows are also simulated. Comparisons with experiments have shown that the cavity shape and the variation of the cavity volume are qualitatively reproduced. However, it has been also indicated that the present cavitation model is insufficient in accuracy and stability.