가스터빈 블레이드 역설계를 위한 냉각 시스템 운전조건 도출

Cooling system of gas turbine is a crucial factor because there is directly related to performance. This study investigated operating conditions of modified cooling system for E-class gas turbine. Factors and levels are designed by full factorial design method. And then turbine performance was numerically analyzed using the program, GateCycle. sMAPE value was used as the objective function to indicate the accuracy. When cooling-air ratio and total air were changed, the similarity between the reference date and performance data was calculated by sMAPE value. As a result, when a rate of total air is 317.75㎏/s, cooling-air ratio is to 13.94%.