Abstract

Abstract : The objective of this project was to develop high-fidelity models for radiation and turbulence-radiation interactions (TRI) in high pressure combustion systems with extensive validation of the aforementioned models. New spectral radiation models for combustion gases at elevated pressures, for both conventional and stochastic solution methods, were developed. Several Radiative Transfer Equation (RTE) solution methods were newly designed (development of cell-based as well as stochastic particle-based, line-by-line accurate photon Monte Carlo methods, and formulation and coding of higher-order, 3D spherical harmonics as well as simplified PN schemes). To allow simulation of high-pressure laminar flames required modification of the open source flow code used (OpenFOAM) to include differential diffusion and cell-based stochastic RTE solvers. The models were validated by simulation of laminar high-pressure hydrogen-air flames, as well as turbulent methane-air jet flames.

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