Ram combustion chamber and method based on runner center injection and shock wave induced combustion

The invention relates to a ramjet combustion chamber and method based on runner center injection and shock wave induced combustion. The inner wall face of the combustion chamber is designed into the variable cross-section smooth curved surface, the fuel injector arranged in the center of the upstream section and the shock wave induction device arranged on the downstream section are combined, fuel is released through the fuel injector, the fuel and air are mixed and then enter from the annular flow channel, uniform mixing can be achieved within a short distance, and the fuel mixing efficiency is improved. Shock waves are induced to be generated at the downstream position through the shock wave induction device, the shock waves intersect at the center of a flow channel of the downstream section of the combustion chamber, the local static temperature and static pressure can be remarkably increased, and a local environment beneficial to combustion is created; an air isolation layer with relatively low temperature