Parametric studies of a side wall quench layer

A parametric study of the structure of the side wall quench layer has been performed. An atmospheric pressure premixed hydrocarbonair flame was stabilized on a porous sintered bronze disk and flat plate was located perpendicular to the undisturbed flame. Spontaneous Raman spectroscopy was used to measure temperature and hydrocarbon number densities, with emphasis on the near wall fields. A propane flame with a cooled copper side wall at fuel lean stoichiometric ratio φ = 0.87 was studied as a nominal case. Various combinations of stoichiometry (φ = 0.69, 0.87, 1.0), fuel species (propane, butane, ethylene), and wall conditions (cooled copper, platinum, and Teflon and heated cast iron) were studied.