Open AccessVertical turbulent exchange structure and parametrization for 3D shallow water hydrodynamics models
Author(s) -
А. И. Сухинов,
A. E. Chistyakov,
С. В. Проценко,
Е. А. Проценко
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2131/2/022017
Subject(s) - parametrization (atmospheric modeling) , turbulence , mechanics , work (physics) , horizontal and vertical , scale (ratio) , vertical velocity , statistical physics , physics , geology , mathematics , geometry , thermodynamics , optics , quantum mechanics , radiative transfer
The work describes research of vertical turbulent exchange structure and parametrization for 3D shallow water hydrodynamics models. In this paper, the coefficients of horizontal turbulent exchange are calculated using a whole set of averaging periods of turbulent velocity pulsations. Using experimental data on the pulsations of the velocity components, the coefficient of vertical turbulent exchange was calculated on the basis of various approaches to its parameterization, based on the analysis of the obtained coefficient distributions, the most adequate parameterization of the coefficient was selected, which is used in the software package. The distribution of the vertical turbulent exchange coefficient obtained in a numerical experiment was compared with the results of full-scale measurements, and the calculation results obtained using the mathematical statistics apparatus were analysed.