面元法预报螺旋桨水动力性能

Prediction of Hydrodynamic Performance on Propeller by Surface Panel Method

采用面元法预报螺旋桨水动力性能，桨叶和桨毂表面离散为四边形双曲面元，每个面元上布置等强度源汇和偶极子分布，螺旋桨尾涡面也离散为布置等强度偶极子的四边形双曲面元．桨叶随边处通过迭代实现非线性等压库塔条件，通过螺旋桨敞水性能和桨叶压力分布的计算结果与试验结果的比较．

The surface of propeller and hub is discreted by a number of small hyperboloidal quadrilateral panels with constant source and doublet distribution.The trailing vortex surface is also represented by a number of small panels with a constant doublet distribution.The non linear Kutta condition of equal pressure on upper and lower at the trailing edge is executed by the iterative procedure.The calculated results for open water characteristics of propeller and pressure distribution on the blade are in satisfactory agreement with experimental data.