二维翼型实验的侧壁影响研究

Studies on Sidewall Effects in Two-Dimensional Airfoil Testing

本文采用油流显示技术、测量模型弦向和展向压力分布的方法 ,对二维翼型风洞中的侧壁附面层影响进行了研究。为能更详细了解侧壁对模型的影响 ,采用不同弦长的模型和两个不同风洞的实验结果比较的方法 ,由油流显示揭示侧壁干扰流动图画 ,利用侧壁抽气技术和干扰修正方法 ,来消除侧壁对模型的影响。实验结果表明 ,选取合理的抽气方式可得到有效的二维实验结果。

Using method of oil-flow visualization techniques and measuring pressure distribution along airfoil chordwise and spanwise studies have been down for sidewall boundary-layer displacement effect in two-dimensional wind tunnel.Three different chord models were tested in two different wind tunnel.In order to clarify the sidewall effects and study method of sidewall suction theory and sidewall interference correction method to remove effects of sidewall on model.The results of oil-flow test show that selection rational suction wary can obtain better testing results.By investigations on effects of the sidewall boundary layer suction and application of a sidewall interference correction method