Abstract
This chapter focuses on coupling radiation in participating media with conduction and convection, but with the added complexity of chemical reactions occurring within the system. First, the additional challenges in coupling posed by chemical reactions are highlighted. Next, two sections are dedicated to radiation in combustion systems: one on laminar combustion and the other on turbulent combustion. A significant portion of the latter section is dedicated to the discussion of turbulence-radiation interactions (TRI) and its modeling. Several stochastic models based on assumed or transported probability distribution function (PDF) are discussed, followed by large eddy simulation (LES) and direct numerical simulation (DNS) for the treatment of both emission and absorption TRI. Multiphase combustion systems with fuel droplets and coal are also discussed, along with oxy-fuel combustion. A broad overview of the state-of-the-art in modeling radiation in turbulent combustion systems is also provided. The final section of the chapter discusses solar thermochemical reactors that utilize solar energy for chemical decomposition of fuels.
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