标称伴流尺度效应的数值模拟

Numerical Simulation of Scale Effect on Nominal Wake

本文针对标称伴流场进行研究,计算航母M8503的尾流场,在桨盘面内对三维速度进行插值,更加直观地绘出桨盘面的标称伴流分布,并计算出周向平均伴流的径向分布,又在整个桨盘面上对伴流积分,得出平均伴流分数,并且对不同的积分方法所得的计算结果作比较。同时又针对不同量级的雷诺数作了计算,并分析雷诺数对标称伴流带来的影响。

Nominal wake field is numerically investigated in this paper. The ship stern flow around SM8503 is calculated and the three-dimensional velocity are interpolated at propeller plane for giving the nominal wake distribution more clearly. Nominal wake fraction is also calculated, and radial distribution is determinated and compared with that obtained with different integration methods. Furthermore, the ship stern flow is studied under four different orders of Reynolds number, including full scale Reynolds number 1. 66×109 and model scale Reynolds number 1. 66×106, and the Reynolds number effect on nominal wake is studied.