SIMULATION OF STEADY AND UNSTEADY CAVITATION ON A MARINE PROPELLER USING A RANS CFD CODE
SIMULATION OF STEADY AND UNSTEADY CAVITATION ON A MARINE PROPELLER USING A RANS CFD CODE
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发表时间：
2003
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通讯作者：
Takayuki Watanabe;T. Kawamura;Yoshihisa Takekoshi;M. Maeda;S. Rhee
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作者：
Takayuki Watanabe;T. Kawamura;Yoshihisa Takekoshi;M. Maeda;S. Rhee
在Singhal等人提出的“全空化模型”的基础上，采用多相流模型对两种不同的常规螺旋桨在非空化和空化工况下的绕流进行了RANS模拟。[1]。均匀流中推力系数和扭矩系数的预测值与空化和非空化条件下的实测值吻合较好。还计算了Seiun-Maru常规螺旋桨在非均匀尾迹中的非定常绕流。叶片表面压力的波动与测量结果进行了比较，定性上吻合较好。总体结果表明，该方法可以为实际的空泡螺旋桨设计过程补充模型试验。
RANS simulations of flow around two different conventional propellers were carried out at non-cavitating and cavitating operating conditions using the multiphase flow model based on the “full cavitation model” proposed by Singhal et al. [1]. The predicted values of the thrust and torque coefficients in uniform flow were in a good agreement with the measurements in cavitating and non-cavitating conditions. Unsteady flow around Seiun-maru conventional propeller in a non-uniform ship wake was also computed. The fluctuation of the blade surface pressure was compared with the measurement, and the agreement was qualitatively good. The overall results suggest that the present approach can complement the model experiments for actual cavitating propeller design procedures.