Skip to main content
Top
Published in: Experiments in Fluids 2/2008

01-02-2008 | Research Article

High resolution PIV measurements around a model turbine blade trailing edge film-cooling breakout

Authors: Yude Chen, Claude G. Matalanis, John K. Eaton

Published in: Experiments in Fluids | Issue 2/2008

Log in

Activate our intelligent search to find suitable subject content or patents.

search-config
loading …

Abstract

Film cooling downstream of a model turbine blade trailing edge has been studied experimentally. High resolution particle image velocimetry was used to obtain spatially resolved mean velocity and turbulence measurements in the immediate vicinity of the trailing edge breakout. The mean velocity measurements imply the presence of a pair of counter-rotating longitudinal vortices shed from the sides of the breakout lands. The turbulent shear stress measurements above the breakout are significantly intensified as blowing ratio is increased. These results suggest that there is a strong mixing between the film cooling slot jets and the mainstream flow which degrades the film cooling effectiveness.

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 102.000 Bücher
  • über 537 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 67.000 Bücher
  • über 390 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Maschinenbau + Werkstoffe




 

Jetzt Wissensvorsprung sichern!

Literature
go back to reference Cunha FJ, Chyu MK (2006) Trailing-edge cooling for gas turbines. J Propuls Power 22:286–300 Cunha FJ, Chyu MK (2006) Trailing-edge cooling for gas turbines. J Propuls Power 22:286–300
go back to reference Goldstein RJ (1971) Film cooling. Adv Heat Transf 7:321–379 Goldstein RJ (1971) Film cooling. Adv Heat Transf 7:321–379
go back to reference Han D (2001) Study of turbulent nonpremixed jet flames using simultaneous measurements of velocity and CH distribution. PhD Thesis, Stanford University Han D (2001) Study of turbulent nonpremixed jet flames using simultaneous measurements of velocity and CH distribution. PhD Thesis, Stanford University
go back to reference Holloway DS, Leylek JH, Buck FA (2002a) Pressure-side bleed film cooling: part 1, steady framework for experimental and computational results. ASME Turbo Expo 2002 GT2002–30471 Holloway DS, Leylek JH, Buck FA (2002a) Pressure-side bleed film cooling: part 1, steady framework for experimental and computational results. ASME Turbo Expo 2002 GT2002–30471
go back to reference Holloway DS, Leylek JH, Buck FA (2002b) Pressure-side bleed film cooling: part 2, unsteady framework for experimental and computational results. ASME Turbo Expo 2002 GT2002-30472 Holloway DS, Leylek JH, Buck FA (2002b) Pressure-side bleed film cooling: part 2, unsteady framework for experimental and computational results. ASME Turbo Expo 2002 GT2002-30472
go back to reference Kacker SC, Whitelaw JH (1968) The effect of slot height and slot turbulence intensity on the effectiveness of the uniform density, two-dimensional wall jet. ASME J Heat Transf 90:469–475 Kacker SC, Whitelaw JH (1968) The effect of slot height and slot turbulence intensity on the effectiveness of the uniform density, two-dimensional wall jet. ASME J Heat Transf 90:469–475
go back to reference Kacker SC, Whitelaw JH (1969) An experimental investigation of the influence of slot lip thickness on the impervious-wall effectiveness of the uniform-density, two dimensional wall jet. Int J Heat Mass Transf 12:1196–1201CrossRef Kacker SC, Whitelaw JH (1969) An experimental investigation of the influence of slot lip thickness on the impervious-wall effectiveness of the uniform-density, two dimensional wall jet. Int J Heat Mass Transf 12:1196–1201CrossRef
go back to reference Kim YW, Coon C, Moon, HK (2005) Film-cooling characteristics of pressure-side discharge slots in an accelerating mainstream flow. ASME Turbo Expo 2005 GT2005–69061 Kim YW, Coon C, Moon, HK (2005) Film-cooling characteristics of pressure-side discharge slots in an accelerating mainstream flow. ASME Turbo Expo 2005 GT2005–69061
go back to reference Launder BE, Rodi W (1983) The turbulent wall jet—measurements and modeling. Annu Rev Fluid Mech 15:429–459CrossRef Launder BE, Rodi W (1983) The turbulent wall jet—measurements and modeling. Annu Rev Fluid Mech 15:429–459CrossRef
go back to reference Martini P, Schulz A (2004) Experimental and numerical investigation of trailing edge film cooling by circular coolant wall jets ejected from a slot with internal rib arrays. J Turbomach 126:229–236CrossRef Martini P, Schulz A (2004) Experimental and numerical investigation of trailing edge film cooling by circular coolant wall jets ejected from a slot with internal rib arrays. J Turbomach 126:229–236CrossRef
go back to reference Martini P, Schulz A, Bauer, HJ (2005) Film cooling effectiveness and heat transfer on the trailing edge cutback of gas turbine airfoils with various internal cooling designs. ASME Turbo Expo 2005 GT2005–68083 Martini P, Schulz A, Bauer, HJ (2005) Film cooling effectiveness and heat transfer on the trailing edge cutback of gas turbine airfoils with various internal cooling designs. ASME Turbo Expo 2005 GT2005–68083
go back to reference Medic G, Durbin PA (2005) Unsteady effects on trailing edge cooling. ASME J Fluids Eng 127:388–392CrossRef Medic G, Durbin PA (2005) Unsteady effects on trailing edge cooling. ASME J Fluids Eng 127:388–392CrossRef
go back to reference Mehlman BP (1990) Experimental slot film cooling effectiveness measurements for varying injection angles in accelerating and non-accelerating flows. MS Thesis, Massachusetts Institute of Technology, Boston Mehlman BP (1990) Experimental slot film cooling effectiveness measurements for varying injection angles in accelerating and non-accelerating flows. MS Thesis, Massachusetts Institute of Technology, Boston
go back to reference Metzger DE, Carper HJ, Swank LR (1968) Heat transfer with film cooling near nontangential injection slots. J Eng Power 90:157–163 Metzger DE, Carper HJ, Swank LR (1968) Heat transfer with film cooling near nontangential injection slots. J Eng Power 90:157–163
go back to reference Nicoll WB, Whitelaw JH (1966) The effectiveness of the uniform density, two dimensional wall jet. Int J Heat Mass Transf 10:623–639CrossRef Nicoll WB, Whitelaw JH (1966) The effectiveness of the uniform density, two dimensional wall jet. Int J Heat Mass Transf 10:623–639CrossRef
go back to reference Pai BR, Whitelaw JH (1970) The prediction of wall temperature in the presence of film cooling. Int J Heat Mass Transf 14:409–426CrossRef Pai BR, Whitelaw JH (1970) The prediction of wall temperature in the presence of film cooling. Int J Heat Mass Transf 14:409–426CrossRef
go back to reference Papell SS (1960) Effect on gaseous film cooling injection through angled slots and normal holes. NASA TN-D-299 Papell SS (1960) Effect on gaseous film cooling injection through angled slots and normal holes. NASA TN-D-299
go back to reference Paxson DE, Mayle RE (1989) The influence of a mainstream thermal boundary layer on film effectiveness. J Turbomach 111:491–496CrossRef Paxson DE, Mayle RE (1989) The influence of a mainstream thermal boundary layer on film effectiveness. J Turbomach 111:491–496CrossRef
go back to reference Rastogi AK, Whitelaw JH (1972a) The effectiveness of three-dimensional film-cooling slots–I. Measurements. Int J Heat Mass Transf 16:1665–1672CrossRef Rastogi AK, Whitelaw JH (1972a) The effectiveness of three-dimensional film-cooling slots–I. Measurements. Int J Heat Mass Transf 16:1665–1672CrossRef
go back to reference Rastogi AK, Whitelaw JH (1972b) The effectiveness of three-dimensional film-cooling slots—II. Predictions. Int J Heat Mass Transf 16:1673–1681 Rastogi AK, Whitelaw JH (1972b) The effectiveness of three-dimensional film-cooling slots—II. Predictions. Int J Heat Mass Transf 16:1673–1681
go back to reference Samuel AE (1965) Film cooling of an adiabatic flat plate in zero pressure gradient in the presence of a hot mainstream and cold tangential secondary injection. J Heat Transf, TRANS ASME 87:409–418 Samuel AE (1965) Film cooling of an adiabatic flat plate in zero pressure gradient in the presence of a hot mainstream and cold tangential secondary injection. J Heat Transf, TRANS ASME 87:409–418
go back to reference Sivasegaram S, Whitelaw JH (1969) Film cooling slots: the importance of lip thickness and injection angle. J Mech Eng Sci 11:22–27CrossRef Sivasegaram S, Whitelaw JH (1969) Film cooling slots: the importance of lip thickness and injection angle. J Mech Eng Sci 11:22–27CrossRef
go back to reference Taslim ME, Spring SD, Mehlman BP (1992) Experimental investigation of film cooling effectiveness for slots of various exit geometries. J Thermophys Heat Transf 6:302–307CrossRef Taslim ME, Spring SD, Mehlman BP (1992) Experimental investigation of film cooling effectiveness for slots of various exit geometries. J Thermophys Heat Transf 6:302–307CrossRef
go back to reference Uzol O, Camci, C (2001a) Aerodynamic loss characteristics of a turbine blade with trailing edge coolant ejection: part 1—effect of cutback length, spanwise rib spacing, free-stream Reynolds number, and chordwise rib length on discharge coefficients. J Turbomach 123:238–248CrossRef Uzol O, Camci, C (2001a) Aerodynamic loss characteristics of a turbine blade with trailing edge coolant ejection: part 1—effect of cutback length, spanwise rib spacing, free-stream Reynolds number, and chordwise rib length on discharge coefficients. J Turbomach 123:238–248CrossRef
go back to reference Uzol O, Camci C (2001b) Aerodynamic loss characteristics of a turbine blade with trailing edge coolant ejection: part 2—external aerodynamics, total pressure losses, and predictions. J Turbomach 123:249–257CrossRef Uzol O, Camci C (2001b) Aerodynamic loss characteristics of a turbine blade with trailing edge coolant ejection: part 2—external aerodynamics, total pressure losses, and predictions. J Turbomach 123:249–257CrossRef
Metadata
Title
High resolution PIV measurements around a model turbine blade trailing edge film-cooling breakout
Authors
Yude Chen
Claude G. Matalanis
John K. Eaton
Publication date
01-02-2008
Publisher
Springer-Verlag
Published in
Experiments in Fluids / Issue 2/2008
Print ISSN: 0723-4864
Electronic ISSN: 1432-1114
DOI
https://doi.org/10.1007/s00348-007-0391-2

Other articles of this Issue 2/2008

Experiments in Fluids 2/2008 Go to the issue

Premium Partners