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Vertical Momentum Transfer Induced by Internal Inertial-Gravity Waves in Flow with Account of Turbulent Viscosity and Diffusion id статьи: 1301
Тип публикации
статья в журнале
Язык
En
Журнал
FLUID DYNAMICS
ISSN:0015-4628
eSSN:1573-8507
ISSN:0015-4628
eSSN:1573-8507
Год
2022
Выходные данные
том
57
выпуск
2
страницы
183-192
Авторы
Абстракт
Free internal waves in a two-dimensional vertically inhomogeneous stratified flow are considered in the Boussinesq approximation with account of the Earth's rotation and turbulent viscosity and diffusion. The third-order implicite Adams method is used to solve numerically the boundary-value problem for the amplitudr of vertical velocity of internal waves. It is found that the eigenfunction and the wave frequency are complex. Taking turbulent viscosity and diffusion into account leads to the fact that the imaginary part of wave frequency is negative, i.e., wave is damped. The vertical wave momentum fluxes are nonzero and can be commensurable with or greater than the corresponding turbulent fluxes.
Ключевые слова
internal waves, imaginary frequency correction, wave momentum flux, turbulent viscosity and diffusion
Дата занесения
2022-04-11 10:45:41