An Eddy Diffusivity–Mass Flux Approach to the Vertical Transport of Turbulent Kinetic Energy in Convective Boundary Layers
作者： Marcin L. Witek , Joao Teixeira , Georgios Matheou
关键词: Triple correlation 、 Boundary layer 、 Convection 、 Mechanics 、 Mass flux 、 Atmospheric sciences 、 Eddy diffusion 、 Turbulence kinetic energy 、 Turbulence 、 Physics 、 Boundary (topology)
摘要: AbstractIn this study a new approach to the vertical transport of turbulent kinetic energy (TKE) is proposed. The principal idea behind parameterization that organized updrafts or convective plumes play an important role in transferring TKE vertically within convectively driven boundary layers. derived by applying updraft environment decomposition velocity triple correlation term prognostic equation. additional mass flux (MF) results from closely resembles features diagnosed large-eddy simulation (LES) and accounts for 97% LES-diagnosed when fraction set 0.13. Another advantage MF it function can be readily calculated using already existing parameterization. approach, combined with several eddy diffusivity (ED) formulations, implemented into simplified 1D p...
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