Theoretical analysis of porous radiant burners under 2-D radiation field using discrete ordinates method

Keshtkar, Mohammad Mehdi; Nassab, S. A. Gandjalikhan

doi:10.1016/j.jqsrt.2009.04.007

Cited by 37 publications

(18 citation statements)

References 24 publications

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“…Further, it has been shown previously in modeling of porous heat exchanger [18] that the gas radiation does not have a considerable effect on the steady state thermal behavior of porous heat exchangers. All thermo physical properties of the solid and the fluid phases are assumed constant [6,7,17,18]. The porous material is assumed to be gray, emitting, absorbing and isotropically scattering.…”

Section: Governing Equationmentioning

confidence: 99%

RETRACTED: Effect of thermal radiation on temperature differential in micro-channels filled with parallel porous media

Khademi

2016

International Journal of Thermal Sciences

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Section: Governing Equationmentioning

confidence: 99%

RETRACTED: Effect of thermal radiation on temperature differential in micro-channels filled with parallel porous media

Khademi

2016

International Journal of Thermal Sciences

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“…The details of the numerical solution of RTE by DOM were also described in the previous work by the second author, in which the thermal characteristics of porous radiant burners were investigated [30].…”

Section: Gas Radiation Modelingmentioning

confidence: 99%

Analysis of Combined Radiation and Forced Convection Heat Transfer in 3D Laminar Flow over an Inclined Forward Facing Step

Rayeni¹,

Nassab²

2016

JECTC

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In the current study, a numerical investigation of three-dimensional combined convection-radiation heat transfer over an inclined forward facing step (FFS) in a horizontal rectangular duct is presented. The fluid is treated as a gray, absorbing, emitting and scattering medium. To simulate the incline surface of FFS, the blocked-off method is employed in this study. The set of governing equations for gas flow are solved numerically using the CFD technique to obtain the temperature and velocity fields. Since the gas is considered as a radiating medium, all of the convection, conduction and radiation heat transfer mechanisms are presented in the energy equation. For computation of radiative term in energy equation, 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 effects of optical thickness, radiation-conduction parameter and albedo coefficient on heat transfer behavior of the system are carried out.

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“…Pressure and velocity were coupled by the SIMPLE algorithm, and first order upwind discretization scheme was used. The discrete ordinate method (DOM) was used to solve the radiation transfer equation [26].…”

Section: Methodsmentioning

confidence: 99%

Numerical Study on Heat Distribution and Transfer Characteristics of a Manifold in a Coal Mine VAM TFRR Oxidation Bed

Li¹,

Liu²,

Han³

et al. 2015

TOMEJ

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A thermal flow-reversal reactor is candidate for utilizing low concentration ventilation air methane. In this paper, a numerical study is performed by using the FLUENT software to explore the details of the transient preheating and starting process of the thermal flow-reversal reactor oxidation bed. The bed was heated by hot gas, which was transported and distributed through the holes of manifolds to the middle of the bed. The homogeneous porous media and coupled heat transfer models were chosen; and the mass and heat flow distributions passing through the holes, the heat transfer on the outer surface of the manifold and the temperature distribution of the bed were calculated. The results indicate that the heat of the hot gas passing through the holes decreases gradually along the direction of the hot gas flowing in the manifold, causing the temperature of the bed decrease accordingly. The calculated temperatures of the oxidation bed are compared with the tested results. The maximum error between the calculation and the test was 8.9%.

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Theoretical analysis of porous radiant burners under 2-D radiation field using discrete ordinates method

Cited by 37 publications

References 24 publications

RETRACTED: Effect of thermal radiation on temperature differential in micro-channels filled with parallel porous media

RETRACTED: Effect of thermal radiation on temperature differential in micro-channels filled with parallel porous media

Analysis of Combined Radiation and Forced Convection Heat Transfer in 3D Laminar Flow over an Inclined Forward Facing Step

Numerical Study on Heat Distribution and Transfer Characteristics of a Manifold in a Coal Mine VAM TFRR Oxidation Bed

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