Soot and radiation in combusting boundary layers

A numerical solution is obtained for a steady, laminar, radiating and combusting boundary layer over a pyrolyzing fuel slab. Two Shvab-Zeldovich coupling functions are needed in the analyses, which treat forced and free flows separately. As in nonradiating combustion, the mass transfer number and the mass consumption number are the dominant parameters controlling the local pyrolysis rate and the local pyrolyzate, respectively. The dimensionless heat of combustion has a dominant role in the determination of flame temperature. A comparison between numerical and experimental pyrolysis rates shows good agreement for a case where surface emission dominates flame radiation.