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Atashafrooz, M., Gandjalikhan Nassab, S., Sadat Behineh, E. (2015). Effects of baffle on separated convection step flow of radiating gas in a duct. ADMT Journal, 8(3), -.
Meysam Atashafrooz; S. A. Gandjalikhan Nassab; E. Sadat Behineh. "Effects of baffle on separated convection step flow of radiating gas in a duct". ADMT Journal, 8, 3, 2015, -.
Atashafrooz, M., Gandjalikhan Nassab, S., Sadat Behineh, E. (2015). 'Effects of baffle on separated convection step flow of radiating gas in a duct', ADMT Journal, 8(3), pp. -.
Atashafrooz, M., Gandjalikhan Nassab, S., Sadat Behineh, E. Effects of baffle on separated convection step flow of radiating gas in a duct. ADMT Journal, 2015; 8(3): -.

Effects of baffle on separated convection step flow of radiating gas in a duct

Article 5, Volume 8, Issue 3, Summer 2015  XML PDF (1.71 MB)
Authors
Meysam Atashafrooz email ; S. A. Gandjalikhan Nassab; E. Sadat Behineh
Department of Mechanical Engineering, Shahid Bahonar University of Kerman, Iran
Abstract
In this paper, the effects of baffle on thermal characteristics of combined convection-radiation heat transfer in laminar flow adjacent to an inclined backward facing step (BFS) in a horizontal duct are investigated. A baffle is mounted on the top wall of channel downstream side of step. In this study, the fluid is treated as a gray, absorbing, emitting and scattering medium; therefore, in the energy equation besides the convective and conductive terms, radiation term is also presented. The radiative transfer equation (RTE) is solved numerically by the discrete ordinates method (DOM) to find the divergence of radiative heat flux distribution inside the radiating medium. The blocked off method is employed for both fluid mechanic and radiation problems to simulate the presence of both step and baffle. The effects of height, width and location of baffle in channel and also the effects of radiative parameters on the fluid flow and heat transfer are investigated by plotting the variations of streamlines, Nusselt number and mean bulk temperature along the flow. It is revealed that, baffle and radiative parameters have great influences on flow and the thermal behaviors of systems with combined convection-radiation heat transfer.
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