螺旋桨粘流水动力特性数值模拟

The Numerical Simulation of Hydrodynamics Characteristic in Propeller

采用人工伪压缩方法对常规螺旋桨粘流问题进行了数值模拟,获得了螺旋桨推力系数、扭矩系数等水动力性能参数.以DTMBP4119螺旋桨为例,对其计算结果的网格依赖性和湍流模型的适应性问题进行了数值分析.与试验结果对比,计算结果吻合度好,表明数值方法正确,程序准确、可靠,能够对常规螺旋桨进行有效地理论研究、数值预报.

The artificial compressible approach was used to simulate the viscous flow around the DTMB P4119 propeller. The hydrodynamics parameters such as the thrust coefficient and torque coefficient were obtained. The dependence characteristics of grid and the adaptability of turbulent model were analyzed. Compared with the experimental results, the numerical results indicate the good agreement. It shows that the numerical approach is correct and this program can be used to predict the flow around the propeller.