Open AccessVERTICAL TURBULENT EXCHANGE COEFFICIENT PARAMETRIZATION IN THE FRAMEWORK OF THE LES APPROACH
Author(s) -
С. В. Проценко,
A. M. Atayan
Publication year - 2021
Publication title -
computational mathematics and information technologies
Language(s) - English
Resource type - Journals
ISSN - 2587-8999
DOI - 10.23947/2587-8999-2021-1-1-26-35
Subject(s) - parametrization (atmospheric modeling) , turbulence , flow (mathematics) , scale (ratio) , mechanics , geology , meteorology , physics , mathematics , optics , quantum mechanics , radiative transfer
The vertical turbulent exchange coefficient parametrization based on the LES approach is constructed in this paper. To implement this approach, water flow velocities pulsations full-scale data at some points of shallow-water systems obtained using an acoustic Doppler flow meter (ADCP) during expedition studies were filtered using two-stage Kalman algorithm, and then averaged, after which the LES approach was applied using subgrid turbulence model. The parametrization of the coefficient of vertical turbulent exchange is used in the wave hydrodynamics mathematical model.