【摘要】 <正> 一、引言 目前,许多低速风洞实验段的横截面为八角形,而在洞壁修正时还采用文献[3]、[6]给出的δ曲线。 过去主要应用两种方法求δ值:一种是映象法,可以计算圆形、方形、正方形和椭圆形等的δ值;另一种就是应用保角变换法,可以计算方形、长方形、椭圆形和八角形等的δ值。但是,从现有的资料来看,还没发现用上述两种方法给出计算任意八角形洞更多还原

【Abstract】 The conformal mapping formula is used for the wall-interference calcul-ation of wind tunnel with octagonal sections. The parameters in the mapping formula can be easily determined by computer. As particular examples, the results for rectangular, square and regularoetagon sections are also given in closed form. Some typical results are plotted and com-pared with other results.更多还原