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부분입사형 초음속 터빈의 블레이드 표면 온도에 블레이드 앞전 형상이 미치는 영향
이상도(Sangdo Lee),김귀순(Kuisoon Kim),이인철(Inchul Lee),구자예(Jayae Koo),문인상(Insang Mun),이수용(Suyoung Lee) 한국추진공학회 2008 한국추진공학회지 Vol.12 No.4
In this paper, numerical analysis of the surface gas temperature on turbine blades has been performed to investigate the temperature profiles characteristics of a partial admission supersonic turbine driven by high temperature and pressure gas of pyro-starter with two different types of turbine blade edge shape. In order to examine the surface gas temperature on turbine blades at initial starting, computations tlave been carried out at several turbine rotational speeds in the range of 0~10,000 rpm for each type of turbine edge shape. Sharp edge and Round edge types were taken as the turbine edge shape factor. As turbine rotational speed increased, the average temperature of turbine blades was further decreased. It was also found that the surface temperature of turbine blades with a sharp edge was lower than round-type edge turbine blades.