후류장에 의한 가스터빈 회전익 통로내 비정상 유동의 수치해석적 연구

A Numerical Analysis of Unsteady Flow in a Rotor Blade Passage by Wake Passing

The effects of unsteady flow on gas turbine, particularly on a rotor blade surface are numerically investigated. The unsteady flow in a rotor blade passage as a result of wake/blade interaction is modeled by the inviscid flow approach, and solved by the Euler equations using a time accurate marching scheme, Numerical results show that for the case of $P_s/ P_r= 1.5$, the velocity and pressure distribution on the blade surfaces have much more complex profiles than those of $P_s/ P_r= 1.0$.