Combustor, a gas turbine, and a jet engine

摘要

This invention relates to a combustor which can simultaneously reduce an amount of NOx exhaust and combustion oscillation. The combustor comprises an internal cylinder which accommodates a premixing nozzle, and an external cylinder which accommodates the internal cylinder and includes an air flow passage which supplies air from a compressor to the premixing nozzle. The air flow passage is provided with a punched metal plate near the maximum velocity fluctuation position wherein the velocity fluctuation of the air flow is increased to the maximum.