This paper presents some numerical investigations of the transonic wind tunnel test section flow field with focus on its geometric parameters and top and bottom wall interference by solving steady Reynolds-averaged Navier-Stokes equation with SST turbulence model equations in multi-block grid discretization frame. Particular attentions has been paid to the effects of the plenum chamber height, the ejector slot height, and wall porosity on the Mach number distribution along the wind tunnel test section centerline. By numerical simulation, the optimal value of the plenum chamber height, the ejector slot height and the wall porosity have been found. The wall porosity also has considerable influence on the surface pressure distribution of the airfoil installed in the test section and to be tested. An optimal wall porosity can also be found to make the airfoil surface pressure distribution as close as possible to the blockage-interface-free data. The results of this paper are valuable to the transonic wind tunnel design and construction.
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屈科,张正科,高超,等. 用数值模拟方法确定跨音速风洞几何参数[J]. 科学技术与工程, 2011, (28): . QU, Zhang Zhengke, Gao Chao, et al. Determination of Transonic Wind Tunnel Geometric Parameters by Numerical Simulation[J]. Science Technology and Engineering,2011,(28).