Turbulent Flow Simulation of the NREL S809 Airfoil
Turbulent Flow Simulation of the NREL S809 Airfoil
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DOI：
10.1260/030952406779295471
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发表时间：
2006-05-01
期刊：
影响因子：
1.5
通讯作者：
Harhad, Ameziane
中科院分区：
文献类型：
--
作者：
Guerri, Ouahiba;Bouhadef, Khadidja;Harhad, Ameziane
对NREL S809翼型进行了数值计算。采用非定常不可压缩Reynolds平均Navier-Stokes解算器对流场进行了建模。两个湍流模型（Menter的SST k/omega和RNG k/epsilon）被用于关闭RANS方程。所有的计算都是在完全紊流的情况下进行的。分析了0 ~ 20度不同迎角下的流场。升力和阻力是通过对叶片表面的压力和剪切应力进行积分计算得到的。比较了两种湍流模型的性能，并对自由流湍流强度的影响进行了校核。结果证实了Menter的SST k/omega模型在模拟翼型周围湍流方面的令人满意的性能。
Numerical computations are carried out for the NREL S809 airfoil. The flow is modelled using an unsteady incompressible Reynolds Averaged Navier-Stokes solver. Two turbulence models (SST k/omega of Menter and RNG k/epsilon) are applied to close the RANS equations. All computations are performed assuming fully turbulent flow. The flow field is analyzed at various angles of attack from 0 to 20 degrees. Lift and drag forces are obtained from the computations by integrating the pressure and shear stress over the blade surface. The performance of the two turbulence models is compared and the influence of the free stream turbulence intensity is checked. The results confirm the satisfactory performance of the SST k/omega model of Menter for modelling turbulent flow around airfoils.