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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):
8066478
Application Number:
11/975,012
Assignee:
Iowa State University Research Foundation, Inc. (Ames, IA)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
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:

Pressure regulated film cooling
patent, March 1996


Increasing Adiabatic Film-Cooling Effectiveness by Using an Upstream Ramp
journal, December 2006


Effects of Coating Blockage and Deposit on Film Cooling Effectiveness and Heat Transfer
conference, June 2012


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Momentum-Preserving Shaped Holes for Film Cooling
conference, March 2009


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


Preventing Hot Gas Ingestion by Film-Cooling Jets via Flow-Aligned Blockers
conference, September 2008