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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. 13 figs.

Inventors:
;
Issue Date:
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
6446019
Patent Number(s):
5924843 A
Application Number:
PPN: US 8-861045
Assignee:
General Electric Co., Schenectady, NY (United States) PTO; EDB-99-084773
DOE Contract Number:  
AC21-93MC30244
Resource Type:
Patent
Resource Relation:
Patent File Date: 21 May 1997
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; AUGMENTATION; COOLING; HEAT TRANSFER; TURBINE BLADES; ENERGY TRANSFER; 330103* - Internal Combustion Engines- Turbine

Citation Formats

Staub, F.W., and Willett, F.T. Turbine blade cooling. United States: N. p., 1999. Web.
Staub, F.W., & Willett, F.T. Turbine blade cooling. United States.
Staub, F.W., and Willett, F.T. Tue . "Turbine blade cooling". United States.
@article{osti_6446019,
title = {Turbine blade cooling},
author = {Staub, F.W. and Willett, F.T.},
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. 13 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {7}
}