Can anE–lTurbulence Closure Simulate Entrainment in Radiatively Driven Convective Boundary Layers?
نویسندگان
چکیده
منابع مشابه
5.6 Numerical Models of Entrainment into Sheared Convective Boundary Layers Evaluated through Large Eddy Simulations
Atmospheric convective boundary layer (CBL) entrainment is the downward mixing of free atmospheric air into the CBL as the CBL grows. Primarily, the CBL entrainment is driven by the buoyancy production of turbulence kinetic energy (TKE) due to heating of the lower surface or cooling at the CBL top. The effects of shear-generated turbulence in the CBL are secondary. However, cases of a purely bu...
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In his pioneering 1941 papers, Kolmogorov derived that the energy spectrum follows a universial form within a range of wavenumbers removed from both the forcing and dissipation and depending only on the wavenumber and the rate of dissipation. Analysis of the spectral kinetic energy budget can help explain the dynamics of the energy spectrum. Each term in this budget, representing nonlinear tran...
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Boundary layers driven by surface buoyant forcings are commonly observed in the environmental flows. An atmospheric example of such boundary layer is the so-called convective boundary layer (CBL), which is driven by buoyancy production at the heated underlying surface during the daytime conditions. The buoyancy is defined as b= g − ( ρ -ρ0 )/ρ0 , where ρ is the density of the fluid, ρ0 is the r...
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ژورنال
عنوان ژورنال: Journal of the Atmospheric Sciences
سال: 1999
ISSN: 0022-4928,1520-0469
DOI: 10.1175/1520-0469(1999)056<3331:caeltc>2.0.co;2