Investigating the structure of a vortex flow in the closed polygonal containers

I. Yu Podolskaya, G. V. Bakakin, I. V. Naumov

Результат исследования: Научные публикации в периодических изданияхстатья по материалам конференции

1 Цитирования (Scopus)

Аннотация

The structure of confined vortex flow generated by a rotating lid in a closed container with polygonal cross-section geometry (eight, six and five angles) has been investigated numerically for different height/radius aspect ratios h from 3.0 to 4.5 and for Reynold numbers ranging from 1500 to 3000. The critical Reynolds numbers at which the flow becomes unsteady were determined numerically by STAR-CCM+ computational fluid dynamics software for pentagonal and hexagonal cross-section configurations. The obtained results were compared with the flow structure in the closed cylindrical container. The boundary of a nonstationarity in polygonal containers is found to shift to the region of smaller aspect ratio and smaller Reynolds numbers with a decrease in the number of angles in the cross-section of the container relative to the boundary in a cylindrical container. It is additionally established that the structure of the flow in the near-axis region remains similar to the vortex structure in the cylinder, therefore the shape of the container does not influence the near-axis region.

Язык оригиналаанглийский
Номер статьи012002
Число страниц6
ЖурналJournal of Physics: Conference Series
Том980
Номер выпуска1
DOI
СостояниеОпубликовано - 19 мар 2018
Событие6th International Conference on Heat and Mass Transfer and Hydrodynamics in Swirling Flows - Novosibirsk, Российская Федерация
Продолжительность: 21 ноя 201723 ноя 2017

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