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RESEARCH PAPERS

Unsteady Natural Convection in Enclosures With Stratified Medium

[+] Author and Article Information
R. J. Shyu, C. K. Hsieh

Mechanical Engineering Department, University of Florida, Gainesville, FL 32611

J. Sol. Energy Eng 109(2), 127-133 (May 01, 1987) (7 pages) doi:10.1115/1.3268189 History: Received May 01, 1986; Online November 11, 2009

Abstract

A numerical solution is given to study the unsteady natural convection in enclosures with stratified medium. Three designs of the enclosure wall are investigated that encompass a wall without insulation on it, insulation placed over the exterior of the wall, and insulation placed over the interior. The enclosed medium is initially stratified in the middle region and the wall temperature is uniform at the high temperature level of the medium. Computation results indicate the superiority of placing the insulation inside to maintain the thermal stratification in the medium. Flow and temperature fields are given for a quantitative substantiation of this observation.

Copyright © 1987 by ASME
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