Paper Information

Journal:   JOURNAL OF ENERGY MANAGEMENT   WINTER 2012 , Volume 1 , Number 2; Page(s) 41 To 48.
 
Paper: 

ANALYSIS OF SECOND LAW FOR FREE CONVECTION IN L-SHAPED ENCLOSURE WITH HEAT-GENERATING CONDUCTING BODY

 
 
Author(s):  JAVAHERDEH KOUROSH*, KARIMI HABIB
 
* FACULTY OF MECHANICAL ENGINEERING, GUILAN UNIVERSITY, RASHT, IRAN
 
Abstract: 

In this research, the second Law for free convection of air flow in L-shaped enclosure with a heat generating body, is numerically studied. In this study, the continuity, momentum and energy equations are solved, using a finite volume method and SIMPLER algorithm. By positioning the heat generating body at three different locations inside the enclosure for three aspect ratios of enclosure in various Rayleigh numbers between 103 and 105 have been investigated. Results show that, increasing the Rayleigh number increases the value of mean Nusselt number over the hot step. Heat is transferred mostly by the conduction for lower Ra numbers, for higher Ra numbers convection mechanism becomes dominant. When the heat generating body is at the centre of enclosure, heat transfer rate and EG (Entropy Generation) have their maximum values.

 
Keyword(s): FREE CONVECTION, ENTROPY GENERATION, ENCLOSURE, HEAT GENERATING BODY
 
References: 
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