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采用五阶精度的加权紧致格式(WCNS)数值模拟了NLR7301两段翼型、30P-30N三段翼型的复杂流场,主要目的是考核WCNS格式模拟多段翼型复杂流场的能力,研究湍流模型、转捩位置对多段翼型压力分布和典型站位速度型的影响。通过求解任意坐标系下的雷诺平均的N-S方程,采用多块对接结构网格技术,在与相应实验结果对比的基础上,详细研究了SA一方程湍流模型、SST两方程湍流模型、转捩位置对该翼型压力分布和典型站位速度型的影响。研究结果表明,基于WCNS格式,采用全湍流模拟方式可以较好地模拟该多段翼型的压力分布,但对边界层速度型和阻力系数的模拟精度较差;模拟实验的转捩位置可以改善边界层和尾迹区的模拟精度,提高阻力的数值模拟精度。
The complex flow field of the NLR7301 two-stage airfoil and the 30P-30N three-stage airfoil are numerically simulated by the fifth order precision weighted meanings format (WCNS). The main purpose is to evaluate the capability of the WCNS format to simulate the complex flowfield of multi-section airfoil. Effects of Turbulence Model, Rotation Position on Pressure Distribution of Multi-Segment Airfoil and Typical Station Velocity Types. By solving the Reynolds-averaged Navier-Stokes equations in any coordinate system and using the multi-block interconnected grid technique, the turbulence model of SA-equation and the turbulence model of SST two-equation are studied in detail based on the comparison with the corresponding experimental results. Impact on the airfoil pressure distribution and typical station velocity pattern. The results show that, based on the WCNS format, the turbulence simulation method can simulate the pressure distribution of the multi-section airfoil well, but the simulation accuracy of boundary layer velocity type and drag coefficient is poor. The simulation experiment can improve the boundary position Layer and wake area simulation accuracy, improve resistance numerical simulation accuracy.