摘要
本方法以参函数法为基础,先从全部被逼近曲线的型值点中筛选出对逼近精度较为敏感的点,然后应用最优化方法对部分敏感点进行摄动,从而达到提高逼近精度和扩大逼近适用范围的目的。文中对“Akron”飞船头部曲线进行了逼近计算,说明本文提出的方法比现有的其他多种方法更为简便,具有更高的逼近精度。当采用比Williams法低一阶的逼近多项式时,能给出精度比Williams法高出二个数量级的逼近结果。
Based on Parametric function method, a practical method with high accuracy is developed for approximation of streamlined bodies of revolution. Sensitive points are picked out from all the given points on the curve of body of revolution and some of these sensitive points are perturbed by optimization method. The approximation of the forebody of 'Akron' airship has shown that the present method is easier and more accurate than the conventional ones.
出处
《中国造船》
EI
CSCD
北大核心
1992年第3期55-60,共6页
Shipbuilding of China
