中等尺寸翼型风洞侧壁干扰的数值模拟研究

采用有限体积法求解三维雷诺平均Navior-Stokes方程对中等尺寸翼型风洞侧壁的影响进行数值模拟。着重研究了不同马赫数及迎角下,使翼型中心对称面的流动状态与相同来流条件下的二维无干扰流动状态相吻合所需要的最小展弦比。结果表明,随着马赫数及迎角的增加,所需要的最小展弦比均有所增加。尤其是有激波存在时,需要比较大的展弦比,才能使激波位置与无干扰结果一致。

Study on side wall interference of moderate-sized 2-D wind

The finite volume scheme has been used to solve the Navier-Stokes equations for simulating the flow field in a moderate-sized two-dimensional transonic wind tunnel test section for the investigation of the side wall effects on the two-dimensional experimental data.Particular attention has been paid to a minimum necessary aspect ratio which a straight wing must satisfy to achieve a two-dimensional flow at least in the mid-span symmetrical central plane under different Mach numbers and different angles of att...