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通过求解三维Navier-Stokes方程,模拟计算了细长体大迎角非对称涡流动,利用在物体表面加扰动块和微吹气的控制方法,分析了大迎角细长旋成体背风涡的结构及侧向力变化的流场因素。结果表明:加扰动块可以将细长体的非定常流动变为有规律的、确定的非定常流动,加微吹气扰动可以很好地控制细长体背风涡的非对称性。计算结果与实验结果进行了对比,并得到较满意的结果。
By solving the three-dimensional Navier-Stokes equation, the asymmetric eddy current at high angle of attack of the slender body is simulated and calculated. The control method of the perturbation block and micro-blowing on the surface of the slender body is used to analyze the structure of the levitation vortex at sights And the lateral force changes in the flow field. The results show that the perturbed moving block can change the unsteady flow of the slender body into a regular and definite unsteady flow, and the micro-blowing disturbance can control the asymmetry of the slender body leeward vortex effectively. The calculated results are compared with the experimental results and the results are satisfactory.