Paper Information

Journal:   MODARES MECHANICAL ENGINEERING   JULY 2017 , Volume 17 , Number 4 #P0099; Page(s) 117 To 124.
 
Paper: 

COMBINED RADIATIVE-CONVECTIVE INVERSE DESIGN PROBLEM IN A 2-D CHANNEL FILLED WITH RADIATING GASES

 
 
Author(s):  OMIDPANAH MOHAMMAD, GANDJALIKHAN NASSAB SEYED ABDOLREZA*
 
* DEPARTMENT OF MECHANICAL ENGINEERING, SHAHID BAHONAR UNIVERSITY, KERMAN, IRAN
 
Abstract: 

In this paper, an inverse analysis of combined radiation and convection heat transfer in a 2-D rectangular duct is presented. The working fluid is a mixture of air including CO2 and H2O as two radiating gases. The purpose is to verify the effects of gas mole fractions on the solution of inverse design problem in which the conjugate gradient method is used to find the temperature distribution over the heater surface to satisfy the prescribed temperature and heat flux distributions over the design surface. The radiating gas is considered to be a gray participating medium with absorption, emission and isotropic scattering. The Planck mean absorption coefficient is calculated and used in radiative calculations. To obtain the temperature field, the energy equation for participating medium is solved by the finite difference method and the discrete ordinates method is used to solve the radiative transfer equation. An attempt is made to determine the temperature distributions over the heater surface while the enclosure is filled with different mole fractions of CO2 and H2O. The effects of other parameters such as radiation conduction parameter on the solution of inverse problem is examined. It is revealed that increase in mole fraction of gases mixture needs a heater surface with higher power input.

 
Keyword(s): INVERSE HEAT TRANSFER, CONVECTION, RADIATION, DOM
 
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