Laminar Natural Convection in a Discretely Heated Cavity: II—Comparisons of Experimental and Theoretical Results-Reference-Cited by-同舟云学术

Laminar Natural Convection in a Discretely Heated Cavity: II—Comparisons of Experimental and Theoretical Results

Published:1995-11-01 Issue:4 Volume:117 Page:910-917
ISSN:0022-1481
Container-title:Journal of Heat Transfer
language:en
Short-container-title:

Author:

Heindel T. J.¹,Incropera F. P.¹,Ramadhyani S.¹

Affiliation:

1. Heat Transfer Laboratory, School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-1288

Abstract

Three-dimensional numerical predictions and experimental data have been obtained for natural convection from a 3 × 3 array of discrete heat sources flush-mounted on one vertical wall of a rectangular cavity and cooled by the opposing wall. Predictions performed in a companion paper (Heindel et al., 1995a) revealed that three-dimensional edge effects are significant and that, with increasing Rayleigh number, flow and heat transfer become more uniform across each heater face. The three-dimensional predictions are in excellent agreement with the data of this study, whereas a two-dimensional model of the experimental geometry underpredicts average heat transfer by as much as 20 percent. Experimental row-averaged Nusselt numbers are well correlated with a Rayleigh number exponent of 0.25 for RaLz ≲ 1.2 × 108.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://asmedigitalcollection.asme.org/heattransfer/article-pdf/117/4/910/5910882/910_1.pdf

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