前缘引流对船舶阻力及伴流分布的影响

针对一双艉无球艏的中速船,采用SIMPLEIC算法和SSTk-ω湍流模型对原型和开孔引流模型进行数值模拟计算,探讨不同开孔形状、开孔尺寸和出流位置对船舶艉部流场特性和阻力的影响规律。计算结果表明：开孔引流在本船上未能实现有效减阻,但不同开孔参数下阻力变化规律明显;引流对船舶艉部流场分布影响显著,改善了艉轴处伴流场分布,对提高螺旋桨推进效率有益。

Influence of Leading Edge Holes for Resistance and Wake Distribution on the Craft

The simulation method of the finite volume method,SIMPLEC algorithm and SST viscous model on the prototype and the opening holes model was adopted to analyze the characteristics of flow field and drag for under different opening form,opening size and outflow location.The numerical results show that the opening flow has positive effect on the flow field distribution and the wake distribution at screw shaft has significant improvement which is good for the propulsive efficiency of ship.The opening hole has not been able to achieve the effective drag reduction.Under different opening parameter,the changing rule of resistance is obvious.