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针对民机构型DLR-F6翼身组合体,研究了不同湍流模型对气动特性和流场特征的影响。控制方程采用全场三维可压、雷诺平均的Navier-Stokes方程;计算格式采用Jameson中心有限体积、多步Runge-Kutta时间步长格式进行求解;湍流模型分别采用EARSM k-ω模型、Spalart-Allmaras(S-A)模型、SST模型、Standard k-ω(STD k-ω)模型、Low-Reynolds Number k-ω(LRN k-ω)模型。通过对巡航状态的计算研究,分析了五种湍流模型在翼身结合处气流分离的特点,为工程应用提供了一定的借鉴意义。
Aiming at the civil structure DLR-F6 wing body assembly, the effects of different turbulence models on aerodynamic characteristics and flow field characteristics are studied. The Navier-Stokes equations of the three-dimensional compressible and Reynolds-averaged Navier-Stokes equations are used in the governing equations. The computational format is solved by the finite volume method of the Jameson Center and the multi-step Runge-Kutta time-step format. The turbulence models are respectively EARSM k-ω model, Spalart-Allmaras (SA) model, SST model, Standard k-ω (STD k-ω) model and Low-Reynolds Number k-ω (LRN k-ω) model. Based on the calculation of the cruise state, the characteristics of the five turbulence models in the separation of the airflow from the wing body are analyzed, which provides a reference for engineering application.