本文以单个马蹄涡代替机翼模型,在矩形闭口风洞映象涡系的基础上增添一个切边涡系,应用涡格法确定切边涡强度,进而计算了八角形风洞有地效时的洞壁升力干扰因子。计算表明,地效试验的洞壁升力干扰修正不仅要计及上洗干扰和流线曲度效应,还应考虑平尾处上洗速度的法向梯度影响。 In this paper, a single horseshoe vortex instead of the wing model, a closed vortex system in the rectangular closed-wind vortex system based on the addition of a trimming vortex system, the use of eddy-grid method to determine the trimming eddy strength, and then calculate the octagonal wind tunnel has time-efficient The hole wall lift disturbance factor. The calculation shows that the correction of the wall lift disturbance in the ground-based test should not only take into account the effect of the upper wash disturbance and the flow curvature, but also consider the normal gradient of the upper wash-tail speed.