The present disclosure provides an axial flow compressor comprising a high pressure compressor section having a core flow path, an aft stage and a forward stage; a diffuser in fluid communication with the core flow path and coupled to the aft stage; a plenum coupled to the diffuser; a pre-swirl nozzle coupled to the plenum, an exit of the pre swirl nozzle being directed at an aft stage rotor disk and configured to impart a swirl to a cooling fluid. The axial flow compressor further may further comprise an aft stage rotor cavity defined by a portion of the aft stage rotor disk and having an aft stage axial overlap seal, wherein a portion of the cooling fluid returns to the core flow path though the aft stage labyrinth seal. The present disclosure provides a method of high pressure compressor aft stage cooling.
展开▼
