Development of design method for high performance propeller considering ship stern wake

提出了一种优化船尾尾流中螺旋桨性能的方法。该方法采用螺旋桨特性的非定常计算方法来评价船尾尾流中螺旋桨的性能。优化过程采用实数编码遗传算法。采用三种不同的螺旋桨性能目标函数进行优化。在每种情况下都获得了性能优于原螺旋桨的改进螺旋桨。在本计算中，发现了均匀流动时螺旋桨效率与船尾尾流时螺旋桨性能的正相关关系。

A method to optimize propeller performance in ship stern wake has been developed. In the present method, unsteady calculation method of propeller characteristics is used for evaluation of propeller performance in ship stern wake. Real-coded genetic algorithm is used for optimization procedure. Three different objective functions about propeller performance were used for optimization. Improved propellers that have superior performance comparing to original propeller were obtained in each case. In the present calculation, positive correlation between propeller efficiency in uniform flow and propeller performance in ship stern wake was found.