VERTICAL TURBULENT EXCHANGE COEFFICIENT PARAMETRIZATION IN THE FRAMEWORK OF THE LES APPROACH
https://doi.org/10.23947/2587-8999-2021-1-1-26-35
Abstract
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 shallowwater 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.
Keywords
vertical turbulent exchange coefficient,
subgrid turbulence model,
turbulent motion,
modeling of large vortices,
Kalman filter
Supporting agencies: The reported study was funded by RFBR according to the research project 20-31-90105.
About the Authors
S. V. Protsenko
Don State Technical University
Russian Federation
Russian Federation
Protsenko Sofya, Postgraduate student of the Department of Mathematics and Informatics, Junior Researcher of the Department of Scientific Research
Gagarin square, 1, Rostov-on-Don
A. M. Atayan
Don State Technical University
Russian Federation
Russian Federation
Atayan Asya, Postgraduate student of the Department of Mathematics and Informatics, Junior Researcher of the Department of Scientific Research
Gagarin square, 1, Rostov-on-Don
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Review
For citations:
Protsenko S.V., Atayan A.M. VERTICAL TURBULENT EXCHANGE COEFFICIENT PARAMETRIZATION IN THE FRAMEWORK OF THE LES APPROACH. Computational Mathematics and Information Technologies. 2021;5(1):26-35. https://doi.org/10.23947/2587-8999-2021-1-1-26-35
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