基于多块混合网格的RANS方法预报螺旋桨敞水性能的研究

Study on the prediction of propeller open-water performance using RANS formula and multi-block hybrid meshes

结合RANS方程和RNG k-ε湍流模型,运用结构化-非结构化多块混合计算网格对螺旋桨敞水性能进行了预报,并将预报所得的敞水性能及尾流场与桨模的试验值进行了比较。结果表明,该文所用方法对不同叶数、不同侧斜度的螺旋桨模型敞水性能的预报具有很高的可信度,该方法对螺旋桨尾流场的预报也能与试验值基本符合,能达到工程应用要求的精度。

The propeller open-water performance is predicted by using the RANS method and RNG k-ε model based on multi-block hybrid meshes. The predicted thrust coefficients, torque coefficients and trailing wake are compared with the experimental results. It shows that the numerical method presented in this paper has good accuracy in the prediction of propeller open-water performance, and the predicted tailing wake is basically in agreement with the experiments.