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Title: Momentum preserving film-cooling shaped holes

Abstract

A system for cooling includes a surface to be cooled and 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. The at least one film-cooling hole is shaped to preserve momentum of the coolant and assist in preventing entrainment of the hot gases. A method of cooling a surface proximate hot gas includes providing coolant through a w-shaped film-cooling hole to form a cool film between the hot gas and the surface and preserving momentum of the coolant using the w-shaped film-cooling hole to assist in preventing entrainment of the hot gases.

Inventors:
;
Issue Date:
Research Org.:
Iowa State Univ., Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531692
Patent Number(s):
7,997,867
Application Number:
11/975,064
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. Momentum preserving film-cooling shaped holes. United States: N. p., 2011. Web.
Shih, Tom I-P, & Na, Sangkwon. Momentum preserving film-cooling shaped holes. United States.
Shih, Tom I-P, and Na, Sangkwon. Tue . "Momentum preserving film-cooling shaped holes". United States. https://www.osti.gov/servlets/purl/1531692.
@article{osti_1531692,
title = {Momentum preserving film-cooling shaped holes},
author = {Shih, Tom I-P and Na, Sangkwon},
abstractNote = {A system for cooling includes a surface to be cooled and 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. The at least one film-cooling hole is shaped to preserve momentum of the coolant and assist in preventing entrainment of the hot gases. A method of cooling a surface proximate hot gas includes providing coolant through a w-shaped film-cooling hole to form a cool film between the hot gas and the surface and preserving momentum of the coolant using the w-shaped film-cooling hole to assist in preventing entrainment of the hot gases.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {8}
}

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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

  • Na, Sangkwon; Shih, Tom I-P.
  • Journal of Heat Transfer, Vol. 129, Issue 4
  • DOI: 10.1115/1.2709965

Turbine bucket with optimized cooling circuit
patent, April 2007


Turbine airfoil with enhanced cooling
patent, September 2010


Method of laser forming a slot
patent, May 1998


Cooled turbine blade for a gas turbine
patent, April 1997


Gas turbine aerofoil
patent, June 2006


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


Film cooling passages with curved corners
patent, August 1987


Chevron film cooled wall
patent-application, December 2005


Cooled turbine component and cooled turbine blade
patent, December 2005


Film cooled components
patent, February 1991


Coolable thin metal sheet
patent, September 1988


Film cooled wall
patent, May 1995


Film cooling passages with step diffuser
patent, April 1988


Coolant passages for gas turbine components
patent, June 2001


Gas turbine rotor blade
patent, August 2000


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

  • Shih, T. I. -P.; Na, S.
  • ASME Turbo Expo 2007: Power for Land, Sea, and Air, Volume 4: Turbo Expo 2007, Parts A and B
  • DOI: 10.1115/GT2007-27600

Film coolant passages for cast hollow airfoils
patent, June 1987


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

  • Shih, T. I. -P.; Na, S.; Chyu, M.
  • ASME Turbo Expo 2006: Power for Land, Sea, and Air, Volume 3: Heat Transfer, Parts A and B
  • DOI: 10.1115/GT2006-91161

    Works referencing / citing this record:

    Turbine blade
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    Gas turbine engine components with improved film cooling
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    Hanger system for a turbine engine component
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    Combustor assembly for a turbine engine
    patent, May 2018


    Combustor assembly for a turbine engine
    patent, January 2019


    Combustor assembly for a turbine engine
    patent, February 2019


    Articles which include chevron film cooling holes, and related processes
    patent, December 2014


    Turbine engine components
    patent, February 2013


    Gas turbine engine components with cooling hole trenches
    patent, January 2014


    Gas turbine engine components with lateral and forward sweep film cooling holes
    patent, October 2018