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Two-equation eddy viscosity models based on the Monin-Obukhov similarity theory

机译：基于Monin-Obukhov相似性理论的二方程涡流粘度模型

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摘要

The present study is devoted for the development of two equation Reynolds-Averaged Navier-Stokes (RANS) closures for computational fluid dynamics (CFD) modelling of the atmospheric boundary layer. By using the inflow conditions based on the Monin-Obukhov similarity theory, the closure coefficients of the proposed models are derived from the analytical solutions of simplified turbulent transport equations. Modifications are conducted for three different turbulence models, which are standard k-∈, k-ω and Re-Normalisation Group (RNG) k-∈. Numerical experiments are performed for the homogeneous atmospheric boundary layer and the results are compared with the theoretical values in comparison to the standard versions of modified turbulence models. Developed models are implemented to open source CFD toolbox OpenFOAM.
机译：本研究致力于为大气边界层的计算流体动力学（CFD）建模开发两个方程式雷诺平均Navier-Stokes（RANS）闭合。利用基于莫宁-奥布科夫相似性理论的入流条件，从简化的湍流输运方程的解析解中得出了所提出模型的闭合系数。对三种不同的湍流模型进行了修改，分别是标准k-∈，k-ω和重新归一化组（RNG）k-∈。对均匀的大气边界层进行了数值实验，并将结果与​​理论值进行了比较，与修正湍流模型的标准版本进行了比较。已开发的模型可用于开源CFD工具箱OpenFOAM。

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