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基于流场有黏-有势混合求解的概念,将雷诺平均N-S方程(RANS)与面元法相结合,独立开发了流场分区混合数值计算程序(HNSP),用于风力机翼型气动性能计算.以风力机专用翼型S814为例,采用开发的HNSP法、势方程耦合边界层方程的Xfoil程序及单独求解有黏流动的RANS方法,计算了其在0°～20.2°攻角范围内的气动性能和流场分布,并与试验结果进行了对比,探讨了黏性计算域范围对计算结果准确性和计算时间的影响.结果表明:该文开发的流场有黏-有势混合计算程序HNSP可在较大的攻角范围内较准确地模拟风力机翼型流场和气动特性,具有较好的适用性,且相对于全黏计算,可有效节省计算资源和时间.
Based on the concept that the flow field has the viscous-potential mixed solution, the flow field partition hybrid numerical calculation program (HNSP) is independently developed by combining the Reynolds-averaged Navier-Stark equations (NSANSF) and the surface element method Taking the special airfoil S814 for wind turbine as an example, the developed HNSP method, Xfoil program of potential equation coupled boundary layer equation and RANS method of solving viscous flow separately are used to calculate the airfoil in the range of 0 ° ~ 20.2 ° The aerodynamic performance and the flow field distribution are compared with the experimental results, and the influence of the viscous calculation range on the accuracy and calculation time of the calculation results is discussed. The results show that the flow field developed in this paper has a viscous-potential mixed calculation program The HNSP can simulate the flow field and aerodynamic characteristics of wind turbine over a wide range of angles of attack with good applicability and can save computational resources and time effectively compared with full viscosity calculation.