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研究了在PAK-B低压涡轮叶片压力面尾缘加装不同Gurney襟翼在不同流动状态下对流动的控制影响.结果表明,Gurney襟翼能够有效减小PAK-B叶型失速流动状态下的损失.在进口Re=23 000,Ma=0.021,FSTI=1%状态下,加装高度为1%弦长的圆形襟翼后总压损失系数减小29%左右,气流转折角增大3.12%左右,同时影响使主流流量减少5%左右;该襟翼使吸力面边界层分离及重附的位置延后,使尾迹区减小,从而减少流动损失.
The control effect of different Gurney flaps on the trailing edges of the pressure surface of the PAK-B low-pressure turbine blade under different flow conditions was studied. The results show that the Gurney flaps can effectively reduce the flow of the PAK-B under the stall- Loss, the total pressure loss coefficient decreased by 29% and the turning angle of air flow increased by 3.12 with the inlet of Re = 23000, Ma = 0.021 and FSTI = 1% with circular flaps of 1% %, While the impact of the mainstream traffic reduced by about 5%; the flap to the suction surface separation and re-attachment of the boundary position delay, so that the wake area to reduce the loss of flow.