Natural convection flow in a porous enclosure with localized heating from below
Saha, Suvash C., Molla, Md. Mamun, & Khan, M. A. I. (2012) Natural convection flow in a porous enclosure with localized heating from below. JP Journal of Heat and Mass Transfer, 6(1), pp. 1-16.
Natural convection flow in a two-dimensional fluid saturated porous enclosure with localized heating from below, symmetrical cooling from the sides and the top and rest of the bottom walls are insulated, has been investigated numerically. Darcy’s law for porous media along with the energy equation based on the 1st law of thermodynamics has been considered. Implicit finite volume method with TDMA solver is used to solve the governing equations. Localized heating is simulated by a centrally located isothermal heat source on the bottom wall, and four different values of the dimensionless heat source length, 1/5, 2/5, 3/5 and 4/5 are considered. The effect of heat source length and the Rayleigh number on streamlines and isotherms are presented, as well as the variation of the local rate of heat transfer in terms of the local Nusselt number from the heated wall. Finally, the average Nusselt number at the heated part of the bottom wall has been shown against Rayleigh number for the non-dimensional heat source length.
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|Item Type:||Journal Article|
|Keywords:||Natural convection, Localized heating, Porous media, Enclosure, Finite volume method|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Numerical Modelling and Mechanical Characterisation (091307)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering|
Past > Schools > School of Engineering Systems
|Copyright Owner:||Copyright 2012 Pushpa Publishing House|
|Deposited On:||08 Nov 2011 16:07|
|Last Modified:||07 Feb 2013 20:00|
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