NUMERICAL ANALYSIS OF UNSTEADY VAPOROUS CAVITATING FLOW AROUND A HYDROFOIL
NUMERICAL ANALYSIS OF UNSTEADY VAPOROUS CAVITATING FLOW AROUND A HYDROFOIL
复制标题
DOI：
--
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Yoshinori Saito
中科院分区：
文献类型：
--
作者：
Yoshinori Saito
本文采用相变模型对绕翼型的空化流动进行了数值模拟。建立了气液两相介质的局部均相模型，求解了Navier-Stokes方程沿着和蒸汽的传质方程。数值方法采用交替方向隐式（ADI）方法和TVD-MUSCL格式。为了获得湍流涡动粘度，采用了Degani-Schiff修正的Baldwin-Lomax模型。为了评估我们的数值方法，蒸汽空化流动的半球/圆柱几何形状进行了计算，数值结果与实验结果的劳斯和McNown。然后，对CAV 2003翼型的空泡绕流进行了数值模拟，并对空泡破裂现象进行了讨论。
In this paper, numerical results of turbulent cavitating flow simulation around a hydrofoil using a phase change model were presented. A locally homogeneous model was proposed for the gas-liquid two-phase medium, and the Navier-Stokes equations along with the mass transfer equation of the vapor were solved. Our numerical method employed the alternate direction implicit (ADI) method and TVD-MUSCL scheme. To obtain the turbulent eddy viscosity, the Baldwin-Lomax model with the Degani-Schiff modification was used. To assess our numerical method, vaporous cavitating flows over a hemisphere / cylinder geometry were first computed and the numerical results were compared with experimental results of Rouse and McNown. Then, the cavitating flows around the CAV2003 hydrofoil were numerically simulated, and the cavity break-off phenomenon was discussed.