ABSTRACT
An experimental study has been developed analyzing the main features of relatively large jet fires (flames length up to 10 m). The fuel was propane, and both sonic and subsonic jet exit velocities were obtained with several outlet diameters. The distribution of temperatures on the flame main axis was measured with a set of thermocouples. The jet fires were filmed with a video-camera registering visible light (VHS) and a thermographic camera (IR). The main geometrical features of the flames were analyzed as a function of the fuel mass flow rate and the jet outlet diameter: lift-off, flame shape, flame size length.
