Monte Carlo simulation for radiative transfer in a high-pressure industrial gas turbine combustion chamber

[+] Author and Article Information
Tao Ren

Postdoctoral scholar, Member of ASME School of Engineering University of California, Merced Merced, California, 95343

Michael F. Modest

Professor, Life fellow of ASME School of Engineering University of California, Merced Merced, California, 95343

Somesh Roy

Assistant Professor, Member of ASME Mechanical Engineering Department Marquette University Milwaukee, Wisconsin, 53233

1Corresponding author.

ASME doi:10.1115/1.4038153 History: Received May 16, 2017; Revised August 16, 2017


Radiative heat transfer is studied numerically for reacting swirling flow in an industrial gas turbine burner operating at a pressure of 15 bar. The reacting field characteristics are computed by Reynolds-averaged Navier-Stokes (RANS) equations using the k-epsilon model with the partially stirred reactor (PaSR) combustion model. The GRI-Mech 2.11 mechanism, which includes nitrogen chemistry, is used to demonstrate the the ability of reducing NOx emissions of the combustion system. A Photon Monte Carlo (PMC) method coupled with a line-by-line spectral model is employed to accurately account for the radiation effects. Optically thin and PMC-gray models are also employed to show the differences between the simplest radiative calculation models and the most accurate radiative calculation model, i.e., PMC-LBL, for the gas turbine burner. It was found that radiation does not significantly alter the temperature level as well as CO2 and H2O concentrations. However, it has significant impacts on the NOx levels at downstream locations.

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