跨声速翼型实验数据插值方法探讨

本文主要针对跨声速风洞翼型实验表面压力分布曲线处理中出现的问题作了分析和讨论。同时,从绘制该翼型压力分布曲线的特点出发,分别叙述了用拉格朗日分段抛物插值和三次样条插值对翼型压力分布曲线所进行的试探性工作。在比较、分析这两种方法的基础上,提出了实用中改进的措施和手段,着重介绍了改进的方法及效果。文中对具体的实践过程也作了较详细的分析说明,并用翼型压力分布曲线图给予直观的解释和验证。上述方法简便、实用,既可以有效地防止因插值方法使用不合理所引起的数值积分误差,而且又可以比较成功地应用于同类问题的处理中。

DISCUSSION OF INSERT METHOD OF THE TRANSONIC AIRFIOL EXPERIMENT DATA

This paper mainly discusses the problem of surface pres-sure distribution curve processing for airfoil experiment in the TransonicAirfoil wind Tunnel,and describes the practical application of theprogram,using parabolic and cubic spline for the airfoil pressure distri-bution curves,ased on plotting the characteristics of the airfoilpressure distribution curves,this paper Suggests some improved ways inuse,and introduces in detail these improved methods and effectivenesson the basis of analysis and comparison of the two ways.The chartsare explained in the paper.The methods,which are simple and utility,not only can effectivelyprevent numerical errors of integration due to unsuitable insert methodsused before but can also be suecessfully used in processing of similartype of problems.