Natural convection in inclined two dimensional rectangular cavities

doi:10.1007/s00231-011-0876-7

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	Natural convection in inclined two dimensional rectangular cavities
	Khezzar, Lyes ; Siginer, Dennis ; Vinogradov, Igor
刊名	heat and mass transfer
	2012
关键词	THERMAL-BOUNDARY CONDITIONS MODE-TRANSITION ASPECT RATIOS ENCLOSURES CHANNEL FINITE LAYER FLOW
DOI	10.1007/s00231-011-0876-7
英文摘要	Steady two-dimensional natural convection in fluid filled cavities is numerically investigated. The channel is heated from below and cooled from the top with insulated side walls and the inclination angle is varied. The field equations for a Newtonian Boussinesq fluid are solved numerically for three cavity height based Rayleigh numbers, Ra = 10(4), 10(5) and 10(6), and several aspect ratios. The calculations are in excellent agreement with previously published benchmark results. The effect of the inclination of the cavity to the horizontal with the angle varying from 0A degrees to 180A degrees and the effect of the startup conditions on the flow pattern, temperature distribution and the heat transfer rates have been investigated. Flow admits different configurations at different angles as the angle of inclination is increased depending on the initial conditions. Regardless of the initial conditions Nusselt number Nu exhibits discontinuities triggered by gradual transition from multiple cell to a single cell configuration. The critical angle of inclination at which the discontinuity occurs is strongly influenced by the assumed startup field. The hysteresis effect previously reported is not always present when the calculations are reversed from 90A degrees to 0A degrees. A comprehensive study of the flow structure, the Nu variation with varying angle of inclination, the effect of the initial conditions and the hysteresis effect are presented.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000300083200003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Thermodynamics; Mechanics; SCI(E); 3; ARTICLE; 2; 227-239; 48
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/234917]
专题	工学院
推荐引用方式 GB/T 7714	Khezzar, Lyes,Siginer, Dennis,Vinogradov, Igor. Natural convection in inclined two dimensional rectangular cavities[J]. heat and mass transfer,2012.
APA	Khezzar, Lyes,Siginer, Dennis,&Vinogradov, Igor.(2012).Natural convection in inclined two dimensional rectangular cavities.heat and mass transfer.
MLA	Khezzar, Lyes,et al."Natural convection in inclined two dimensional rectangular cavities".heat and mass transfer (2012).