KFU. Card publication. Viscous near-wall flow in a wake of circular cylinder at moderate Reynolds numbers

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FEDERAL UNIVERSITY

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VISCOUS NEAR-WALL FLOW IN A WAKE OF CIRCULAR CYLINDER AT MODERATE REYNOLDS NUMBERS

Form of presentation

Articles in international journals and collections

Year of publication

2017

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Authors, employees of KFU

Mazo Aleksandr Bencianovich, author

Other authors

Molochnikov Valeriy Mikhaylovich, author

Authors, postgraduates KFU

Okhotnikov Dmitriy Ivanovich, postgraduate kfu

Bibliographic description in the original language

D.I. Okhotnikov, V.M. Molochnikov, A.B. Mazo, A.V. Malyukov, A.E. Goltsman, I.I. Saushin. Viscous near-wall flow in a wake of circular cylinder at moderate Reynolds numbers // Thermophysics and Aeromechanics, 2017, Vol. 24, No. 6. P.873-882

Annotation

Here we present the results of experimental investigation of a cross flow around a circular cylinder mounted near the wall of a channel with rectangular cross section. The experiments were carried out in the range of Reynolds numbers corresponding to the transition to turbulence in a wake of the cylinder. Flow visualization and SIV-measurements of instantaneous velocity fields were carried out. Evolution of the flow pattern behind the cylinder and formation of the regular vortex structures were analyzed. It is shown that in the case of flow around the cylinder, there is no spiral motion of fluid from the side walls of the channel towards its symmetry plane, typical of the flow around a spanwise rib located on the channel wall. The laminar-turbulent transition in the wake of the cylinder is caused by the shear layer instability.

Keywords

circular cylinder, channel, visualization, SIV-measurements, separation region, shear layer, loss of stability, transition to turbulence, velocity profiles, root-mean-square velocity fluctuations

The name of the journal

Thermophysics and Aeromechanics

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=176403&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Mazo Aleksandr Bencianovich	ru_RU
dc.contributor.author	Molochnikov Valeriy Mikhaylovich	ru_RU
dc.contributor.author	Okhotnikov Dmitriy Ivanovich	ru_RU
dc.date.accessioned	2017-01-01T00:00:00Z	ru_RU
dc.date.available	2017-01-01T00:00:00Z	ru_RU
dc.date.issued	2017	ru_RU
dc.identifier.citation	D.I. Okhotnikov, V.�. Molochnikov, �.B. ��z�, �.V. ��lyukov, �.�. Goltsman, I.I. Saushin. Viscous near-wall flow in a wake of circular cylinder at moderate Reynolds numbers // Thermophysics and Aeromechanics, 2017, Vol. 24, No. 6. P.873-882	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=176403&p_lang=2	ru_RU
dc.description.abstract	Thermophysics and Aeromechanics	ru_RU
dc.description.abstract	Here we present the results of experimental investigation of a cross flow around a circular cylinder mounted near the wall of a channel with rectangular cross section. The experiments were carried out in the range of Reynolds numbers corresponding to the transition to turbulence in a wake of the cylinder. Flow visualization and SIV-measurements of instantaneous velocity fields were carried out. Evolution of the flow pattern behind the cylinder and formation of the regular vortex structures were analyzed. It is shown that in the case of flow around the cylinder, there is no spiral motion of fluid from the side walls of the channel towards its symmetry plane, typical of the flow around a spanwise rib located on the channel wall. The laminar-turbulent transition in the wake of the cylinder is caused by the shear layer instability.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	circular cylinder	ru_RU
dc.subject	channel	ru_RU
dc.subject	visualization	ru_RU
dc.subject	SIV-measurements	ru_RU
dc.subject	separation region	ru_RU
dc.subject	shear layer	ru_RU
dc.subject	loss of stability	ru_RU
dc.subject	transition to turbulence	ru_RU
dc.subject	velocity profiles	ru_RU
dc.subject	root-mean-square velocity fluctuations	ru_RU
dc.title	Viscous near-wall flow in a wake of circular cylinder at moderate Reynolds numbers	ru_RU
dc.type	Articles in international journals and collections	ru_RU