Numerical Investigation of Flow and Heat Transfer Characteristics on the Gas Turbine Blade with a Squealer Tip

스퀼러팁을 이용한 가스터빈 내에서의 3차원 유동 및 열전달 특성에 관한 연구

In this paper, a numerical simulation of three-dimensional flow field and heat transfer coefficient distribution are conducted for two types of gas turbine blade with plane and squealer tips. The numerical results show that gas turbine blade with squealer tip considerably changes the flow structures near the tip regions of pressure and suction sides, so the overall heat transfer coefficients on the tip and shroud with squealer tip are lower than those with the plane tip blade. Finally, the effect of tip gap clearance on the flow field and heat transfer characteristics are investigated.