Numerical Flow Analysis of a Supersonic Impulse Turbine with Nozzles and Rotor blades

노즐과 로터가 장착된 초음속 충동형 터빈의 전산유동해석

Four design candidates for a 1.4MW class partial admission turbine have been chosen from a Preliminary design process. Their performance were estimated through the 3-D numerical analyses using a frozen rotor method. In order to select the optimum design, each flow analysis result was compared with others. Flow characteristics in the passages and some types of losses induced by shocks and wakes were found from calculation results. Based on these calculations, a new rotor blade was redesigned and compared with previous one through flow analysis.