均流工况下的螺旋桨片空泡面积数值模拟

Numerical Study on Cavitation Area of the Propeller in Uniform Flow

采用数值模拟技术对螺旋桨在均流工况下的空泡性能进行研究。基于RANS(Reynolds Averaged Navier-Stokes)方程,采用SST k-ω(Shear Stress Transfer k-ω)湍流模型和Schnerr-Sauer空化模型,选取合适的网格划分策略和边界条件等关键计算参数,对螺旋桨片空泡面积进行数值模拟。通过比较分析螺旋桨片空泡面积占比的数值计算结果与模型试验结果可知,二者的符合性较好,所提数值模拟方法准确可靠,能满足工程应用要求。随着数值模拟技术的快速发展,螺旋桨空泡性能数值预报正在发挥越来越重要的作用。

The operation of propeller in uniform flow is simulated with SST k-ω(Shear Stress Transfer k-ω)turbulence model plus Schnerr-Sauer cavitation model and RANS(Reynolds Averaged Navier-Stokes)equations calculation.The cavitation area on blade surface of the propeller is determined.The study shows that the percentage of cavitation area on blade surface of the propeller is in good agreement with the experimental results and the numerical method is accurate enough for evaluating the cavitation area of the propeller in uniform flow.