Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Effect of Thermal Radiation on the Conjugate Heat Transfer from a Circular Cylinder with an Internal Heat Source in Laminar Flow

Version 1 : Received: 7 April 2021 / Approved: 8 April 2021 / Online: 8 April 2021 (17:57:29 CEST)

How to cite: Juncu, G. Effect of Thermal Radiation on the Conjugate Heat Transfer from a Circular Cylinder with an Internal Heat Source in Laminar Flow. Preprints 2021, 2021040249 (doi: 10.20944/preprints202104.0249.v1). Juncu, G. Effect of Thermal Radiation on the Conjugate Heat Transfer from a Circular Cylinder with an Internal Heat Source in Laminar Flow. Preprints 2021, 2021040249 (doi: 10.20944/preprints202104.0249.v1).

Abstract

The effect of thermal radiation on the two – dimensional, steady-state, conjugate heat transfer from a circular cylinder with an internal heat source in steady laminar crossflow is investigated in this work. P0 (Rosseland) and P1 approximations were used to model the radiative transfer. The mathematical model equations were solved numerically. Qualitatively, P0 and P1 approximations show the same effect of thermal radiation on conjugate heat transfer; the increase in the radiation – conduction parameter decreases the cylinder surface temperature and increases the heat transfer rate. Quantitatively, there are significant differences between the results provided by the two approximations.

Keywords

conjugate heat transfer; convection-radiation; Rosseland approximation; P1 approximation; finite difference; defect correction - multigrid.

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