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Conference Paper: Transition to turbulence and relaminarization phenomena in rotating radial straight pipes

TitleTransition to turbulence and relaminarization phenomena in rotating radial straight pipes
Authors
Issue Date1993
Citation
American Society Of Mechanical Engineers, Heat Transfer Division, (Publication) Htd, 1993, v. 252, p. 55-63 How to Cite?
AbstractFlow visualization results for secondary flow patterns at the exit of a rotating radial-axis straight tube (length l = 82 cm, inside diameter d = 3.81 cm, l/d = 21.52) are presented to study the stabilizing and destabilizing effects of Coriolis forces for Reynolds numbers Re = 500, 2,000, 3,000 and 4,000 and rotating speeds n = 24 to approximately 350 rpm. The flow visualization was realized by smoke injection method. The photographic results provide insight into the transition process from laminar to turbulent flow at the lower Reynolds number Re = 500 and relaminarization phenomena at Re = 3,000 and 4,000 for a rotating radial-axis straight tube with outward main flow. The stabilizing and destabilizing effects of Coriolis forces are shown for Reynolds number Re = 2,000 in the transition flow regime. The present flow visualization investigation on secondary flow phenomena involving Coriolis forces complements the existing measurements and theoretical studies. At Re = 3,000, the Coriolis vortices relating to Coriolis instability problem are identified clearly by visualization.
Persistent Identifierhttp://hdl.handle.net/10722/158893
ISSN

 

DC FieldValueLanguage
dc.contributor.authorCheng, KCen_US
dc.contributor.authorWang, Liqiuen_US
dc.date.accessioned2012-08-08T09:04:26Z-
dc.date.available2012-08-08T09:04:26Z-
dc.date.issued1993en_US
dc.identifier.citationAmerican Society Of Mechanical Engineers, Heat Transfer Division, (Publication) Htd, 1993, v. 252, p. 55-63en_US
dc.identifier.issn0272-5673en_US
dc.identifier.urihttp://hdl.handle.net/10722/158893-
dc.description.abstractFlow visualization results for secondary flow patterns at the exit of a rotating radial-axis straight tube (length l = 82 cm, inside diameter d = 3.81 cm, l/d = 21.52) are presented to study the stabilizing and destabilizing effects of Coriolis forces for Reynolds numbers Re = 500, 2,000, 3,000 and 4,000 and rotating speeds n = 24 to approximately 350 rpm. The flow visualization was realized by smoke injection method. The photographic results provide insight into the transition process from laminar to turbulent flow at the lower Reynolds number Re = 500 and relaminarization phenomena at Re = 3,000 and 4,000 for a rotating radial-axis straight tube with outward main flow. The stabilizing and destabilizing effects of Coriolis forces are shown for Reynolds number Re = 2,000 in the transition flow regime. The present flow visualization investigation on secondary flow phenomena involving Coriolis forces complements the existing measurements and theoretical studies. At Re = 3,000, the Coriolis vortices relating to Coriolis instability problem are identified clearly by visualization.en_US
dc.languageengen_US
dc.relation.ispartofAmerican Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTDen_US
dc.titleTransition to turbulence and relaminarization phenomena in rotating radial straight pipesen_US
dc.typeConference_Paperen_US
dc.identifier.emailWang, Liqiu:lqwang@hkucc.hku.hken_US
dc.identifier.authorityWang, Liqiu=rp00184en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0027208551en_US
dc.identifier.volume252en_US
dc.identifier.spage55en_US
dc.identifier.epage63en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridCheng, KC=7402998071en_US
dc.identifier.scopusauthoridWang, Liqiu=35235288500en_US

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