ENHANCED INTERNAL PASSAGE HAVING SPIRAL RIB TURBULATOR FOR GAS TURBINE BLADE COOLING

摘要

According to one embodiment of the present invention, a gas turbine blade having a cross protrusion having improved cooling performance comprises: a cylindrical inner flow passage where cooling fluid is moved from a blade root to a tip; a spiral protrusion inserted into an inner surface of the cylindrical inner flow passage; and a cross protrusion in the parallel direction to the moving direction, crossing the spiral protrusion.