The Stationary Concentrated Vortex Model,

Onishchenko, O.; Viktor, F.; Wendell, H.; Pokhotelov, O.; Astafieva, N.; Skirvin, S.J.; Verth, G.

Авторы: Onishchenko Oleg, Viktor Fedun, Wendell Horton, Pokhotelov Oleg, Astafieva Natalia, Skirvin Samuel J., Verth Gary
Журнал: CLIMATE
Том: 9
Номер: 3
Год издания: 2021
Первая страница: 39
Последняя страница: 39
DOI: 10.3390/cli9030039
Аннотация: A new model of an axially-symmetric stationary concentrated vortex for an inviscid incompressible flow is presented as an exact solution of the Euler equations. In this new model, the vortex is exponentially localised, not only in the radial direction, but also in height. This new model of stationary concentrated vortex arises when the radial flow, which concentrates vorticity in a narrow column around the axis of symmetry, is balanced by vortex advection along the symmetry axis. Unlike previous models, vortex velocity, vorticity and pressure are characterised not only by a characteristic vortex radius, but also by a characteristic vortex height. The vortex structure in the radial direction has two distinct regions defined by the internal and external parts: in the inner part the vortex flow is directed upward, and in the outer part it is downward. The vortex structure in the vertical direction can be divided into the bottom and top regions. At the bottom of the vortex the flow is centripetal and at the top it is centrifugal. Furthermore, at the top of the vortex the previously ascending fluid starts to descend. It is shown that this new model of a vortex is in good agreement with the results of field observations of dust vortices in the Earth’s atmosphere.
Добавил в систему: Онищенко Олег Григорьевич

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The Stationary Concentrated Vortex Model,статья

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