翼型风洞侧壁干扰的数值模拟研究

运用Navier-Stokes数值模拟对翼型模拟试验对风洞侧壁干扰进行模拟，将简单代数湍流模型扩展用于机翼／风洞侧壁结合区流动，分析了风洞实验侧壁干扰问题的形成机理和影响翼型实验侧壁干扰的各种因素，如翼型展长、风洞侧壁边界层厚度及侧壁边界层抽吸等，对实验结果的影响，得出了一些有用的结论。计算格式空间采用中心有限体积离散，时间采用多步Runge-Kutta时间步长格式进行积分。计算结果证明了该方法的可行性和优越性。

The numerical simulation study of sidewall interference of the 2-D wind tunnel

In this paper, a new numerical analytic method of wind tunnel side wall interference is presented, which simulates the viscous flow around the test model in airfoil wind tunnel by solving three dimensional Reynolds-averaged Navier Stokes equations using Baldwin Lomax turbulent model. In the method, a cell centered finite volume method in space and a five step Runge Kutta hybrid scheme as time matching method are adopted. Baldwin-Lomax turbulent model is extended to wing/wind tunnel side wall juncture flow. The mechanism of side wall interference is studied. The effects of various factors, including the span length of wing, thickness of the side wall boundary layer of the wind tunnel and the suction of the side wall boundary layer of the wind tunnel on testing results are investigated. Some useful conclusions are obtained