✦ LIBER ✦

Natural convection heat transfer in the open space between two horizontal circular planes with different temperatures

✍ Scribed by Hideki Tokanai; Masafumi Kuriyama; Eiji Harada; Hirotaka Konno

Publisher: John Wiley and Sons
Year: 2001
Tongue: English
Weight: 231 KB
Volume: 30
Category: Article
ISSN: 1099-2871
DOI: 10.1002/htj.1037

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✦ Synopsis

Abstract

A vertical cylinder maintained at room temperature is located right above a horizontal circular heated plane to constitute a narrow air space between the plane and the cylinder bottom surface. Natural convection heat transfer in the space is experimentally investigated.

Average heat transfer coefficients of the heated plane are presented with the variation of space distance and Rayleigh number, and are compared with the predictions of the correlation equations which have been proposed for the space between two infinite parallel plates.

Visualized flow patterns above the heated plane are also shown. The relation between the flow pattern and the heat transfer coefficient is discussed to clarify the mechanism of heat transfer in the narrow space. As a result, a heat transfer correlation is proposed, which is applicable over a wide range of space distances. © 2001 Scripta Technica, Heat Trans Asian Res, 30(6): 521–531, 2001

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