不同湍流模型在高效舵水动力计算中的适用性分析

Applicability Study on Several Turbulence Models in Hydrodynamic Performance Computation of High Effectiveness Rudder

针对不同湍流模型在随边扭曲高效舵水动力计算中的适用性问题,采用计算流体力学软件STAR-CCM+,应用Spalart-Allmaras、SST k-ω、Realizable k-ε等5种湍流模型对1种新型随边扭曲高效舵进行水动力计算,预报值与模型试验结果对比分析表明,湍流模型不同,结果差异较大,使用Standard k-ε湍流模型得到的仿真结果精度最高,在模型尺度下随边扭曲高效舵水动力数值计算方面较其他模型更具优势。

In order to investigate the applicability of turbulence models in hydrodynamic performance computation of high effectiveness twisted rudder, the CFD software STAR-CCM+ was adopted to calculate the hydrodynamic performance of a high effectiveness twisted rudder by five different turbulent models including Spalart-Allmaras model, SST k-ω model, realizable k-ε model and so on. The numerical results were compared with the result of model experiment, indicating that the numerical results exist significant differences among the different turbulence models. The most accurate simulation is achieved by standard k-ε, so it has more advantage than the other turbulent models.