DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, C.H. | ko |
dc.contributor.author | Hyun, Jae Min | ko |
dc.contributor.author | Kwak, H.S. | ko |
dc.date.accessioned | 2013-03-05T03:45:08Z | - |
dc.date.available | 2013-03-05T03:45:08Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2001-08 | - |
dc.identifier.citation | INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, v.22, no.4, pp.433 - 439 | - |
dc.identifier.issn | 0142-727X | - |
dc.identifier.uri | http://hdl.handle.net/10203/85335 | - |
dc.description.abstract | A numerical study is made of the basic-state flow field of a fluid with a density maximum in a differentially rotating cylinder. The fluid density reaches a maximum ρm at temperature Tm, and a quadratic (ρ-T) relationship is used to model the fluid behavior near Tm. The temperature at the bottom (top) endwall disk is TB (Tτ), with ΔT ≡ TΤ - TB > 0, and Tm lies between TB and Tτ. The rotation rate of the bottom (top) endwall disk is ωB(ωτ), with ε ≡ (ωτ-ωB)/ωB ≪ 1. Numerical solutions were obtained of the Navier-Stokes equations for large rotational Reynolds number and large Rayleigh number. Detailed flow and density fields are portrayed to be strongly dependent on the density inversion factor γ ≡ (Tm - TB)/(Tτ - TB). When γ ≡ 0, the results are qualitatively similar to those of a usual Boussinesq fluid with a linear (ρ-T) relationship. It is shown that a modified thermal wind relation prevails in the interior, in which the vertical shear of azimuthal velocity is balanced by the radial gradient of density. As γ increases, the overall strength of meridional circulation grows. The vertical profiles of azimuthal velocity are plotted as γ varies. The Ekman layer suction is intensified as γ increases. The behavior of average Nusselt number Nu at the bottom disk with varying γ is discussed and physical rationalizations are given. © 2001 Elsevier Science Inc. All rights reserved. | - |
dc.language | English | - |
dc.publisher | Elsevier | - |
dc.title | Flow of a fluid near its density maximum in a differentially rotating cylinder | - |
dc.type | Article | - |
dc.identifier.wosid | 000170072800007 | - |
dc.identifier.scopusid | 2-s2.0-0035424032 | - |
dc.type.rims | ART | - |
dc.citation.volume | 22 | - |
dc.citation.issue | 4 | - |
dc.citation.beginningpage | 433 | - |
dc.citation.endingpage | 439 | - |
dc.citation.publicationname | INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW | - |
dc.identifier.doi | 10.1016/S0142-727X(01)00077-7 | - |
dc.contributor.localauthor | Hyun, Jae Min | - |
dc.contributor.nonIdAuthor | Lee, C.H. | - |
dc.contributor.nonIdAuthor | Kwak, H.S. | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Density inversion | - |
dc.subject.keywordAuthor | Rotating flow | - |
dc.subject.keywordAuthor | Stratified flow | - |
dc.subject.keywordPlus | CONVECTION | - |
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