k-ω湍流模式在船舶粘性流场计算中的应用

Application of k-ωTurbulence Model to Computation of Viscous Flow Field Around a Ship

湍流模式的选取对精确预报船舶艉部流场至关重要,本文利用SSTk-ω湍流模型计算了SR196A油船模型的粘性绕流场,船艉三个截面上的轴向速度等值线和横向速度矢量的计算结果和文献提供的试验值进行了对比,结果符合得很好,同时计算得到的阻力系数也与试验值进行了比较,结果同样令人满意。表明SSTk-ω湍流模型在船舶粘性流场的计算中有较强的应用能力。

The choice of turbulence model is key to accurate prediction of ship stern flow field.Using SST k-ωturbulence model,the viscous flowfield around a tank model was computed numerically.The predicted axial velocity contours and cross vectors at three sections were compared with experimental results from literature.The results agree very well.And the calculated resistance coefficient was also quantitatively compared with test data,satisfying results were gotten.It shows that SST k-ωturbulence model would have good prospects in ship viscous flow calculation.