MEASUREMENTS OF SOOT PRODUCTION AND THERMAL-RADIATION FROM CONFINED TURBULENT JET DIFFUSION FLAMES OF METHANE

Turbulent methane/air jet diffusion flames at atmospheric and elevated pressure have been studied experimentally to provide data for coupled thermal radiation and soot production model development and validatio n. Although methane is only lightly sooting at atmospheric pressure, a t elevated pressure the soot yield increases greatly. This allows the creation of a highly radiating flame, of moderate optical depth, withi n a laboratory scale rig. Spatially resolved flame properties needed f or model validation have been measured at 1 and 3 atm. These measureme nts include detailed maps of mean mixture fraction, mean temperature, mean soot volume fraction, and mean and instantaneous spectrally resol ved, path integrated radiation intensity. (C) 1998 by The Combustion I nstitute