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    • 2. 发明申请
    • GAS TURBINE ENGINE EXHAUST DIFFUSER INCLUDING CIRCUMFERENTIAL VANE
    • 燃气涡轮发动机排气扩散器,包括圆形叶片
    • WO2013090144A2
    • 2013-06-20
    • PCT/US2012/068458
    • 2012-12-07
    • SIEMENS ENERGY, INC.OROSA, John A.MATYS, Pawel
    • OROSA, John A.MATYS, Pawel
    • F01D25/30
    • F01D25/305F02K1/38F02K1/386F05D2240/122F05D2270/173
    • A flow passage defined between an inner and an outer boundary for guiding a fluid flow in an axial direction. A flow control vane is supported at a radial location between the inner and outer boundaries. A fluid discharge opening is provided for discharging a flow of the compressed fluid from a trailing edge of the vane, and a fluid control surface is provided adjacent to the fluid discharge opening and extends in the axial direction at the trailing edge of the vane. The fluid control surface has a curved trailing edge forming a Coanda surface. The fluid discharge opening is selectively provided with a compressed fluid to produce a Coanda effect along the control surface. The Coanda effect has a component in the radial direction effecting a turning of the fluid flow in the flow path radially inward or outward toward one of the inner and outer boundaries.
    • 在内部和外部边界之间限定的用于沿轴向引导流体流动的流动通道。 流量控制叶片支撑在内边界和外边界之间的径向位置处。 设置流体排出口,用于从叶片的后缘排出压缩流体的流动,并且流体控制表面设置在流体排出口附近并且在叶片的后缘沿轴向延伸。 流体控制表面具有形成柯恩达表面的弯曲后缘。 流体排放开口选择性地提供有压缩流体以沿着控制表面产生柯恩达效应。 柯恩达效应在径向上具有一个分量,该分量使流动路径中的流体流径向地向内或向外朝着内边界和外边界中的一个边界转向。