Research output: Contribution to journal › Conference article › peer-review
Investigating the structure of a vortex flow in the closed polygonal containers. / Podolskaya, I. Yu; Bakakin, G. V.; Naumov, I. V.
In: Journal of Physics: Conference Series, Vol. 980, No. 1, 012002, 19.03.2018.Research output: Contribution to journal › Conference article › peer-review
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TY - JOUR
T1 - Investigating the structure of a vortex flow in the closed polygonal containers
AU - Podolskaya, I. Yu
AU - Bakakin, G. V.
AU - Naumov, I. V.
N1 - Publisher Copyright: © Published under licence by IOP Publishing Ltd.
PY - 2018/3/19
Y1 - 2018/3/19
N2 - 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.
AB - 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.
KW - BREAKDOWN
UR - http://www.scopus.com/inward/record.url?scp=85045927425&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/980/1/012002
DO - 10.1088/1742-6596/980/1/012002
M3 - Conference article
AN - SCOPUS:85045927425
VL - 980
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012002
T2 - 6th International Conference on Heat and Mass Transfer and Hydrodynamics in Swirling Flows
Y2 - 21 November 2017 through 23 November 2017
ER -
ID: 12844309