壁压信息法低速大攻角洞壁干扰修正

 本文将壁压信息法用于实壁低速八角形风洞,获得了一个三维模型大攻角实验洞壁干扰修正结果;给出了处理八角形风洞切边效应的方法;研究了等效奇点配置诸因素（数目、展宽、后掠角和攻角）的影响;讨论了不同等效奇点布置对修正结果的唯一性问题;研究了壁压条形状及测压点布置对修正结果的影响。

A WALL CORRECTION AT HIGH ANGLE OF ATTACK IN LOW-SPEED WIND TUNNEL USING WALL PRESSURE SIGNATURE METHOD

Wall pressure signature m'ethod has been applied to wall correction for three-dimensional models at high angles of attack in low-speed wind tunnel with a closed octagonal test section. This paper presents the method for handling the effects of the border-cutting in the octagonal tunnel. The effects of different sigularity colocations (such as the number, span width, sweep angle and pitching angle) , the formation of wall pressure strip, and the distribution of surface orifices have all been studied in detail. It is concluded that the wall pressure signature method can be made better use of correcting the wall interferences at high angles of attack.