Free Convective Heat Transfer Structures as a Function of the Width of Isothermal Horizontal Rectangular Plates

Autor:	Ewa Radziemska, Witold M. Lewandowski
Rok vydání:	2005
Předmět:	Fluid Flow and Transfer Processes Flow visualization Convection Natural convection Materials science Convective heat transfer business.industry Mechanical Engineering Rayleigh number Mechanics Condensed Matter Physics Physics::Fluid Dynamics Optics Flow (mathematics) Heat transfer Fluid dynamics business
Zdroj:	Heat Transfer Engineering. 26:042-050
ISSN:	1521-0537 0145-7632
DOI:	10.1080/01457630590916275
Popis:	Results are presented for the experimental investigations of free convection heat transfer from upward facing isothermal horizontal rectangular plates as a function of the plate width. Two models of the convective fluid flow structures above horizontal rectangular plates were proposed as a result of flow visualization. Solutions of these models are presented in the form of Nusselt-Rayleigh relations with the aspect ratio as a parameter. Analysis of the visualization results provided a basis for preferring the radial flow pattern at small values of the Rayleigh number, especially for square plates or at the ends of rectangular plates, and a basis for preferring the parallel flow model at large values of the Rayleigh number. From the previous experimental results and the present experimental and interferometric studies, it is shown that the transition Rayleigh number at which the flow changes from the concentric to the parallel flow pattern is a function of the width of the plate.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ef642980dfabbece21f5ce05037cacfa https://doi.org/10.1080/01457630590916275 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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