The flow structure and statistical features of a turbulent stable stratified boundary layer are studied by using the RANS (Reynolds averaged Navier-Stokes) model of turbulence, which takes into account the influence of internal waves. The possibility of the RANS model of turbulence description of intermittent turbulence both near the surface and above the surface in the vicinity of the low-level jet flow formed above the boundary layer is analyzed. The role of turbulent diffusion (third-order statistical moments) in intermittent turbulence generation and energetics is discussed. An analysis of the energetics based on the balance equations of kinetic and potential turbulence energies shows, in particular, that the weak mixing (Rig >1) is quite capable on transferring momentum.
Eddy mixing, gravity waves and the intermittent turbulence in atmospheric flows under stronger stratification
INTERNATIONAL CONFERENCE ON THE METHODS OF AEROPHYSICAL RESEARCH (ICMAR 2020) ; 2020 ; Novosibirsk, Russia
AIP Conference Proceedings ; 2351 , 1
2021-05-24
10 pages
Conference paper
Electronic Resource
English
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