Experiments with nonintrusive diagnostic methods on a flameproof enclosure model

The transmission of an explosion through the gap of a flameproof enclosure is a complex combustion and flow process which is influenced by many different parameters. Investigations into this subject therefore require models of the enclosure and the gap, as well as nonintrusive measuring systems. In addition to the traditional schlieren method the use of laser diagnostic methods such as Rayleigh scattering and laser-induced fluorescence (LIF) are well suited to investigate fast combustion and flow processes. This paper describes the application of these methods on experiments outside the joint of a flameproof enclosure model