Turbine cascade structure

Details Turbine cascade structure Turbine cascade structure

2004-10-29

2009-12-01

Verdier, Christopher (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Axially extending shroud ring or casing

C416S235000, C416S23600R, C416S237000, C416SDIG004, C415S191000, C415S208200, C415S210100, C415S211200, C415S914000

Reexamination Certificate

active

07625181

ABSTRACT:
A turbine blade cascade structure includes a plurality of blades arranged in series in a circumferential direction on a wall surface, in which a corner portion defined by the wall surface and a front edge portion of each of blade bodies supported by the wall surface, to which a working fluid flows, includes a cover portion (fillet) that extends toward an upstream side of a flow of the working fluid. The turbine blade cascade structure is capable of reducing the secondary flow loss of the secondary flow in spite of the fluctuation of an incident angle of the working fluid flowing to the front edge portion of the blade body.

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Shin, T. I-P et al., “Controlling Secondary-Flow Structure by Leading-Edge Airfoil Fillet and Inlet Swirl to Reduce Aerodynamic Loss and Surface Heat Transfer”, Proceedings of ASMS Turbo Expo, 2002.

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