MGT(Micro Gas Turbine) 터빈 휠 최적설계 연구

The MGT(Micro Gas Turbine) generator has risen up as an alternative for other generators in accordance with the global tendency in the energy distribution, and the markets has been also expanding. The turbine wheel is a key component of the MGT generators and it is required to be designed for increasing operating temperature. In this paper, we studied the effects of shape factors to structural performance of a radial turbine rotor in CHP(Combined Heat and Power) MGT we are developing. For this study, we performed the parametric analysis about thickness of back plate, area of scallops and blade fillet radius which affect with concentrated stress on the turbine rotor using FEM and RSM(Response Surface Method). Then we designed the turbine rotor has optimized shape and we carried out additional analysis to select a proper material for MGT operational conditions.