Fuel Distribution and Gas Temperature Measurements in a Nonuniformly-Fueled Bluff-Body Flame

摘要

A nonuniformly-fueled bluff-body combustion rig was developed at the Air Force Research Laboratory to study how combusting gas streams of different temperatures and different fueling levels interact. The fuel distribution was measured using planar laser-induced fluorescence (PLIF), and temperature measurements were made using thin-filament pyrometry (TFP), a technique that derives gas temperature from the incandescence of a thin filament immersed in the flame. OH- and CH-filtered chemiluminescence was also collected. All three techniques show incomplete mixing of the vitiated, fueled core stream and the unfueled fan stream.