Ignition of fuel/air mixtures by radiatively heated particles

摘要: Abstract The current work examines the ignition of fuel/air mixtures by particles which have been heated up rapidly intense electromagnetic radiation from an infrared laser source. Experiments conducted at relatively large beam sizes, where times are a function irradiance. Particles in form fine powders were placed into chamber filled with ignitable butane/air mixtures. Possible is shown for range carbon based materials including different blacks, graphite, C 60 fullerene and diamond powder, as well non-reactive such silicon carbide, iron-, copper- oxides. irradiance was varied independently results to become independent size irradiated area if sufficiently illuminated. particle found significant impact on time ignition. Specifically, finer lead shorter due higher surface volume ratio reduces both gas heating times. Ignition could be achieved across whole flammability using black carbide particles, although, near rich no obtained black.