vmaitComputational Mathematics and Information TechnologiesComputational Mathematics and Information Technologies2587-8999Донской государственный технический университет10.23947/2587-8999-2021-1-1-26-35vmait-29Research ArticleСтатьиПАРАМЕТРИЗАЦИЯ КОЭФФИЦИЕНТА ВЕРТИКАЛЬНОГО ТУРБУЛЕНТНОГО ОБМЕНА В РАМКАХ ПОДХОДА LESVERTICAL TURBULENT EXCHANGE COEFFICIENT PARAMETRIZATION IN THE FRAMEWORK OF THE LES APPROACHПроценкоС. В.ProtsenkoS. V.

Проценко Софья Владимировна, аспирант кафедры «Математика и информатика», младший научный сотрудник 

344000, Ростов-на-Дону, пл. Гагарина, 1

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

rab55555@rambler.ruАтаянА. М.AtayanA. M.

Атаян Ася Михайловна, аспирант кафедры «Математика и информатика», младший научный сотрудник 

344000, Ростов-на-Дону, пл. Гагарина, 1

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

atayan24@mail.ruДонской государственный технический университетРоссияDon State Technical UniversityRussian Federation202121022023512635Copyright © Проценко С.В., Атаян А.М., 20232023Проценко С.В., Атаян А.М.Protsenko S.V., Atayan A.M.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.cmit-journal.ru/jour/article/view/29

В работе построена параметризация коэффициент вертикального турбулентного обмена на основе подхода LES. Для реализации данного подхода натурные данные о пульсациях скоростей водного потока в некоторых точках мелководных систем, полученные с помощью акустического доплеровского измерителя течений (ADCP) во время экспедиционных исследований, отфильтрованы с помощью двухэтапного алгоритма Калмана, а затем усреднены, после чего при помощи «подсеточной» модели турбулентности применен подход LES. Параметризация коэффициент вертикального турбулентного обмена используется в дальнейшем в математической модели волновой гидродинамики. 

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.

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The authors declare that there are no conflicts of interest present.