回转体空泡流特性研究

利用CFD商业软件F1uent 6．0中的基于Rayleigh-Plesset方程的单一介质可变密度混合模型进行了回转体空泡流特性研究。首先采用二维轴对称求解器进行了不同头体的空泡几何特性研究，及局部空泡阻力特性分析，探索了空泡减阻的机理。然后采用三维求解器进行了非零攻角空泡流及超空泡数值模拟。给出了较易产生空泡的头型，与实验结果符合得较好；得到了零攻角和非零攻角情况下的双空泡及超空泡形态。

Research on characteristics of flow around cavitating body of revolution

Characteristics of flow around cavitating body of revolution was researched with a single-fluid with variable density approach based on Rayleigh-Plesset equation, what is called mixture model embodied in commercial CFD code Fluent 6.0. The first investigation was on geometrical and drag characteristics of partial cavity around some bodies with distinct head-forms by employing a 2D axisymmetric solver. And the drag reduction mechanism of cavitating flow was probed. The cavitating flow at non-zero angle of attack and supercavity pattern were investigated with a 3D solver. The head-form, which is more incident to cavitation, is found; and the result is in good agreement with relevant experimental dada. Supercavity and double-cavity pattern at zero and non-zero angle of attack were obtained.