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Title: Turbine blade cooling

Abstract

A turbine rotor blade comprises a shank portion, a tip portion and an airfoil. The airfoil has a pressure side wall and a suction side wall that are interconnected by a plurality of partition sidewalls, defining an internal cooling passageway within the airfoil. The internal cooling passageway includes at least one radial outflow passageway to direct a cooling medium flow from the shank portion towards the tip portion and at least one radial inflow passageway to direct a cooling medium flow from the tip portion towards the shank portion. A number of mixing ribs are disposed on the partition sidewalls within the radial outflow passageways so as to enhance the thermal mixing of the cooling medium flow, thereby producing improved heat transfer over a broad range of the Buoyancy number.

Inventors:
 [1];  [2]
  1. (Schenectady, NY)
  2. (Niskayuna, NY)
Publication Date:
Research Org.:
GENERAL ELECTRIC CO
OSTI Identifier:
872390
Patent Number(s):
US 5924843
Application Number:
08/861045
Assignee:
General Electric Company (Schenectady, NY) NETL
DOE Contract Number:  
AC21-93MC30244
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
turbine; blade; cooling; rotor; comprises; shank; portion; tip; airfoil; pressure; wall; suction; interconnected; plurality; partition; sidewalls; defining; internal; passageway; radial; outflow; direct; medium; flow; towards; inflow; mixing; ribs; disposed; passageways; enhance; thermal; producing; improved; heat; transfer; broad; range; buoyancy; medium flow; rotor blade; improved heat; flow passageways; turbine rotor; flow passage; cooling medium; broad range; tip portion; turbine blade; heat transfer; shank portion; partition sidewalls; internal cooling; producing improved; blade comprises; blade cooling; /415/416/

Citation Formats

Staub, Fred Wolf, and Willett, Fred Thomas. Turbine blade cooling. United States: N. p., 1999. Web.
Staub, Fred Wolf, & Willett, Fred Thomas. Turbine blade cooling. United States.
Staub, Fred Wolf, and Willett, Fred Thomas. Tue . "Turbine blade cooling". United States. https://www.osti.gov/servlets/purl/872390.
@article{osti_872390,
title = {Turbine blade cooling},
author = {Staub, Fred Wolf and Willett, Fred Thomas},
abstractNote = {A turbine rotor blade comprises a shank portion, a tip portion and an airfoil. The airfoil has a pressure side wall and a suction side wall that are interconnected by a plurality of partition sidewalls, defining an internal cooling passageway within the airfoil. The internal cooling passageway includes at least one radial outflow passageway to direct a cooling medium flow from the shank portion towards the tip portion and at least one radial inflow passageway to direct a cooling medium flow from the tip portion towards the shank portion. A number of mixing ribs are disposed on the partition sidewalls within the radial outflow passageways so as to enhance the thermal mixing of the cooling medium flow, thereby producing improved heat transfer over a broad range of the Buoyancy number.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 20 00:00:00 EDT 1999},
month = {Tue Jul 20 00:00:00 EDT 1999}
}

Patent:

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