Open Access

ARTICLE

NUMERICAL SIMULATIONS OF THE EFFECT OF TURBULENCE IN THE THERMAL-RADIATION FLOW FIELD

O. M. Oyewola^a,b,*, O. S. Ismail^b, J. O. Bosomo^b

a School of Mechanical Engineering, Fiji National University, Suva, Fiji.
b Department of Mechanical Engineering, University of Ibadan, Ibadan, Nigeria.
* Corresponding author. Email: olanrewaju.oyewola@fnu.ac.fj

Frontiers in Heat and Mass Transfer 2021, 17, 1-5. https://doi.org/10.5098/hmt.17.8

Abstract

This paper investigates possible inherent modifications of the radiative heat source term due to the influence of turbulence in the thermal radiation field of a gas turbine combustor flame. Adapting a flame temperature of 2000[K], COMSOL Multiphysics software was utilized to numerically simulate the process, assuming a gray gas participating medium with absorption coefficient of 0.03[m^-1]. The analysis of the results for five (5) different radial cut sections of the simulated combustor chamber shows that turbulence-radiation interactions cause radiative heat losses from the flame, with the divergence of the radiative heat flux having a deviation factor of 3.48, and a 1.43% reduction in the local flame temperature, as observed at a critical radial section of the combustor chamber.

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Keywords

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