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    Turbine Blades and Gas Turbine Having the Same
    6.
    发明申请
    Turbine Blades and Gas Turbine Having the Same 有权

    公开(公告)号：US20180266255A1

    公开(公告)日：2018-09-20

    申请号：US15883564

    申请日：2018-01-30

    Applicant: Mitsubishi Hitachi Power Systems, Ltd.

    Inventor： Ichiro MIYOSHI

    IPC: F01D5/18

    CPC classification number: F01D5/187 ,  F01D5/145 ,  F01D5/186 ,  F05D2220/32 ,  F05D2260/202 ,  F05D2260/2212 ,  F05D2270/17

    Abstract: A turbine blade according to the invention includes a first wall surface facing a cooling passage through which cooling air flows; a second wall surface facing a working fluid passage through which a working fluid flows; a communication hole establishing communication between the cooling passage and the working fluid passage; and a projection provided on the downstream side of the flowing direction of the cooling air in the opening of the communication hole formed in the first wall surface, the projection protruding from the first wall surface toward the cooling passage. The projection includes a slope section formed on the first wall surface that ascends in the direction opposite the flowing direction of the cooling air toward the cooling passage and a curved section formed as a convex section on the side of the cooling passage, the curved section extending along the opening in the form of an arc.

    Drag reduction systems having fractal geometry/geometrics
    8.
    发明授权
    Drag reduction systems having fractal geometry/geometrics 有权

    公开(公告)号：US10001015B2

    公开(公告)日：2018-06-19

    申请号：US14247958

    申请日：2014-04-08

    Applicant: Alexander J. Shelman-Cohen

    Inventor： Alexander J. Shelman-Cohen

    IPC: B64C21/00 ,  F01D5/14 ,  B63B1/34 ,  B64C21/10 ,  F03D1/06

    CPC classification number: F01D5/145 ,  B63B1/34 ,  B64C21/10 ,  B64C2230/26 ,  F03D1/0608 ,  F05B2250/61 ,  Y02E10/721 ,  Y02T50/166 ,  Y02T70/121

    Abstract: Airfoil and hydrofoil systems include structures having a surface texture defined by fractal geometries. Raised portions or fractal bumps can be included on the surfaces, forming a surface texture. The surface textures can be defined by two-dimensional fractal shapes, partial two-dimensional fractal shapes, non-contiguous fractal shapes, three-dimensional fractal objects, and partial three-dimensional fractal objects. The surfaces can include indents having fractal geometries. The indents can have varying depths and can be bordered by other indents, or bumps, or smooth portions of the airfoil or hydrofoil structure. The fractal surface textures can reduce vortices inherent from airfoil and hydrofoil structures. The roughness and distribution of the fractal surface textures reduce the vortices, improving laminar flow characteristics and at the same time reducing drag. The systems are passive and do not require applied power.

    Turbomachine including a vane and method of assembling such turbomachine
    9.
    发明授权
    Turbomachine including a vane and method of assembling such turbomachine 有权

    公开(公告)号：US09995166B2

    公开(公告)日：2018-06-12

    申请号：US14550506

    申请日：2014-11-21

    Applicant: General Electric Company

    Inventor： Thomas William Vandeputte

    IPC: F01D9/04 ,  F01D17/16 ,  F01D5/14

    CPC classification number: F01D17/162 ,  F01D5/145 ,  F01D9/045 ,  F05D2240/125

    Abstract: A vane for a turbomachine includes a pressure surface and a suction surface opposite the pressure surface. The pressure surface and the suction surface define a width therebetween. The vane also includes a first end. The first end includes a distal portion, a proximal portion, a pressure surface first portion, and a suction surface first portion. At least one of the pressure surface first portion and the suction surface first portion slope away from the other of the pressure surface first portion and the suction surface first portion such that the width increases from a first end minimum width at the proximal portion to a first end maximum width at the distal portion.

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