计入粘性影响的螺旋桨性能计算

A viscors effect approach to computation of propeller performance

应用非线性定常升力面理论计算螺旋桨水动力性能，引入准三维高阶近似Ｎａｖｉｅｒ－Ｓｔｏｋｅｓ方程，辅以二模式湍流方程以及差分数值方法计算桨叶边界层，通过迭代匹配计算考虑粘性对螺旋桨性能的影响．计算实例表明，理论计算结果同模型试验相应结果符合良好．

A method is described for calculating viscous effect on propeller hydrodynamic characteristicsin which a numerical computation for determining the boundary layer on propeller blade surfacefrom the qusi-three-dimensional assumption and the higher-order approximation with the two-equation turbulent model and the finite difference technique is coupled with a non-linear steadylifting surface program of propeller hydrodynamic performance in an interactive and iterativemanner to predict the combined flow characteristics.Some example results are provided forpropeller open characteristics and they show that the calculated results are in close agreementwith the available experimental data.