Study of Delayed-Detached Eddy Simulation with Weakly Nonlinear Turbulence Model
Study of Delayed-Detached Eddy Simulation with Weakly Nonlinear Turbulence Model
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DOI：
10.2514/1.20127
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发表时间：
2006-09
影响因子：
2.2
通讯作者：
Zhixiang Xiao;Haixin Chen;Yufei Zhang;Jingbo Huang;S. Fu
中科院分区：
文献类型：
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作者：
Zhixiang Xiao;Haixin Chen;Yufei Zhang;Jingbo Huang;S. Fu
本文提出了雷诺平均N-S和大涡模拟混合方法的并行计算方法。通过在弱非线性k-w湍流模型中引入长度尺度，研究了分离涡模拟和延迟分离涡模拟两种混合方法。在采用混合方法之前，对基线弱非线性模型和k-w剪应力输运模型进行了跨音速RAE-2822翼型和ONERA-M6翼型算例的验证。数值计算结果与已有的实验数据吻合良好。然后应用基于弱非线性湍流模型的雷诺平均方法和基于弱非线性湍流模型的混合方法计算了NASA TN D-712机翼的高雷诺数跨音速分离绕流，对于大迎角情况(a=26.2°)，两种混合方法都能得到与实验结果相一致的结果；对于中等攻角情况(a=12.5°)，延迟分离涡模拟得到的结果令人满意，而分离涡模拟预测的机翼涡破裂起点太靠前。
This paper presents a parallel computation with hybrid Reynolds-averaged Navier-Stokes and large eddy simulation methods. Two types of hybrid approaches, referred to as detached eddy simulation and delayed-detached eddy simulation, are investigated through introducing length scales into the weakly nonlinear k-w turbulence model. Before the implementation of hybrid methods, the baseline weakly nonlinear model and k-w shear-stress-transport model are validated in the transonic RAE-2822 airfoil and ONERA-M6 wing cases. The numerical results show satisfactory agreement with the available experimental data. The Reynolds-averaged and hybrid methods based on the weakly nonlinear turbulence model are then applied to calculate the high Reynolds number transonic separation flows around NASA TN D-712 wing fulesage For the higher angle of attack case (a = 26.2 deg), both hybrid methods deliver good results when compared with the experiment; for the moderate angle of attack case (a = 12.5 deg), the results obtained with the delayed detached eddy simulation are satisfactory, whereas the starting point of the wing vortex breakdown predicted with the detached eddy simulation is too far upstream.