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Title: Preventing hot-gas ingestion by film-cooling jet via flow-aligned blockers

Abstract

A system for cooling includes a surface to be cooled, at least one film-cooling hole within the surface for allowing a film cooling jet of coolant to reach the surface, each of the at least one film-cooling hole having a diameter and at least two spaced apart flow-aligned blockers positioned downstream of the at least one-film cooling hole, each of the flow-aligned blockers extending upwardly from the surface to assist in preventing hot-gas entrainment and increasing adiabatic effectiveness by confining coolant flow downstream of the at least one film-cooling hole between the blockers.

Inventors:
;
Issue Date:
Research Org.:
Iowa State Univ., Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531704
Patent Number(s):
8,066,478
Application Number:
11/975,012
Assignee:
Iowa State University Research Foundation, Inc. (Ames, IA)
DOE Contract Number:  
FC26-02NT41431
Resource Type:
Patent
Resource Relation:
Patent File Date: 2007-10-17
Country of Publication:
United States
Language:
English

Citation Formats

Shih, Tom I-P, and Na, Sangkwon. Preventing hot-gas ingestion by film-cooling jet via flow-aligned blockers. United States: N. p., 2011. Web.
Shih, Tom I-P, & Na, Sangkwon. Preventing hot-gas ingestion by film-cooling jet via flow-aligned blockers. United States.
Shih, Tom I-P, and Na, Sangkwon. Tue . "Preventing hot-gas ingestion by film-cooling jet via flow-aligned blockers". United States. https://www.osti.gov/servlets/purl/1531704.
@article{osti_1531704,
title = {Preventing hot-gas ingestion by film-cooling jet via flow-aligned blockers},
author = {Shih, Tom I-P and Na, Sangkwon},
abstractNote = {A system for cooling includes a surface to be cooled, at least one film-cooling hole within the surface for allowing a film cooling jet of coolant to reach the surface, each of the at least one film-cooling hole having a diameter and at least two spaced apart flow-aligned blockers positioned downstream of the at least one-film cooling hole, each of the flow-aligned blockers extending upwardly from the surface to assist in preventing hot-gas entrainment and increasing adiabatic effectiveness by confining coolant flow downstream of the at least one film-cooling hole between the blockers.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {11}
}

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Works referenced in this record:

Coolable thin metal sheet
patent, September 1988


Directly cooled thermal barrier coating system
patent, September 2003


Cooling hole arrangements in jet engine components exposed to hot gas flow
patent, July 1994


Gas turbine rotor blade
patent, August 2000


Turbine bucket with optimized cooling circuit
patent, April 2007


Gas turbine aerofoil
patent, June 2006


Pressure regulated film cooling
patent, March 1996


Hot gas path component with mesh and impingement cooling
patent, February 2007


Triple tip-rib airfoil
patent, May 2001