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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Thermal convection overlapped by velocity shear: fluid experimentстатья
- Авторы: Kozelov V.P., Kozelov B.V.
- Журнал: Physics of Auroral Phenomena
- Том: 31
- Номер: 1
- Год издания: 2009
- Издательство: Федеральное государственное бюджетное научное учреждение "Полярный геофизический институт"
- Местоположение издательства: Апатиты
- Первая страница: 69
- Последняя страница: 72
- Аннотация: Complexity of plasma dynamics restricts usual considerations to relatively simple elementary processes. Not only the processes itself but and interactions between the processes are interesting too. Many analogies between plasma and fluid dynamics are known, partly, convective processes. Here we present our first results of laboratory observation of fluid thermal convection overlapped by velocity shear. The velocity shear was orientated perpendicular to the temperature gradient. The fluid used is oil with aluminum dust. The fluid motion has been recorded by digital HD video camera. The structure of the convective cells has been extracted by gradient filter. Visco-elastic features of the convection structure in the region of reconfiguration of thermal convection cells to shear motion have been considered. Gradual decrease of the fluid temperature gave us possibility to follow an increase of the shear motion zone with increase of viscosity. Possible analogies of observed structure with events in the auroral ionosphere are discussed.
- Добавил в систему: Козелов Борис Владимирович