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在既定附面层抽吸位置与抽吸量下,借助数值模拟的方法探讨了计及抽吸腔室时抽吸槽道构型对某大折转角吸附式叶栅气动损失以及流场结构的影响.研究结果表明,宽槽方案可增强端区抽吸能力,改善吸附式叶栅的通流性能,同时,由于吸入进抽吸流路内的流体速度减小,抽吸流路内的熵增变小,总损失以及附面层抽吸功耗明显降低.顺流抽吸角度过大时,会减弱端区抽吸能力,造成通流损失增加,但计及抽吸流路影响时,适当地将槽道方向朝向来流可削弱抽吸流路内产生的流动损失,进而降低总损失以及附面层抽吸功耗.“,”At the fixed aspiration flow rate and aspiration location,the numerical investigations were carried out to study the influence of aspiration slot shape on the aerodynamic loss and flow structures of a high-turning aspirated cascade while considering the aspiration plenum.The results show that,a wider slot scheme can enhance the endwall region aspiration ability,and hence improve the throughflow performance of the aspirated cascade.Meanwhile,since the aspiration fluid is decelerated,the entropy generation within the aspiration flow path is weakened,resulting in an evident decrease in total loss and boundary layer aspiration power consumption.As the slot angle is too aligned with incoming flow,the endwall region aspiration ability will be undermined and lead to a higher throughflow loss.However,while considering the effects of the aspiration flow path,a proper negative slot angle could decrease the flow loss generated within the aspiration flow path,and furthermore,lower the total loss and aspiration power consumption.