流体机械

2000, (03) 25-29+4

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轴向掠叶片对涡轮静叶栅流场气动及声学特性的影响
Effects of the Axial Swept Blade on Aerodynamice Aeroacoustic Performances of the Turbine Stator Flow

杨爱玲,陈康民
Yang Ailing et al(25)

摘要(Abstract):

通过数值模拟计算了采用轴向前掠、后掠及径向三种不同叶片型式的涡轮静叶栅流场 ,并根据计算结果分析了各流场流动参数沿流向、径向的分布特点 ,以及轴向前掠涡轮叶栅降噪增效、轴向后掠叶片恶化涡轮静叶栅气动及噪声特性的根本原因
A numerical investigation is carried out to study the effects of the aft and forward swept technology on areodynamic areoacoustic performaces of the turbine stator flow. Based on the numerical results of the stator flows with aft swept,forward swept and unswept blades,the distributions along axial and radial directions of flow variables are given.The analysis indicated that the forward swept stator had low total pressure losses and an improved acoustic performance compared with the unswept stator.The data also showed that the aft swept blade deteriorated the areodynamic and areoacoustic performace of the stator flow.

关键词(KeyWords): 轴向掠叶片;静叶栅;气动—声学性能
swept blade,stator flow,areodynamic areoacoustic performance

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作者(Author): 杨爱玲,陈康民
Yang Ailing et al(25)

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