Analysis of film cooling performance of advanced tripod hole geometries with and without manufacturing features

Ramesh, Sridharan; Ramirez, David Gomez; Ekkad, Srinath V.; Alvin, Mary Anne

doi:10.1016/j.ijheatmasstransfer.2015.11.033

Analysis of film cooling performance of advanced tripod hole geometries with and without manufacturing features

Journal Article · Fri Nov 27 23:00:00 EST 2015 · International Journal of Heat and Mass Transfer

DOI:https://doi.org/10.1016/j.ijheatmasstransfer.2015.11.033· OSTI ID:1481272

Ramesh, Sridharan ^[1]; Ramirez, David Gomez ^[2]; Ekkad, Srinath V. ^[1]; Alvin, Mary Anne ^[3]

National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States); Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)

The present study evaluates the film cooling performance of a set of manufacturable tripod hole designs, with and without shaped exits. The tripod holes with realistic manufacturing features included rounded corners at the hole inlet and outlet, as well as a webbing between the tripod holes. Standard cylindrical and shaped cylindrical (10° fan + laidback) holes were also studied for comparative analysis. Transient heat transfer experiments with a mainstream Re_d ≈ 3200 were conducted on a flat plate test rig. Different hole geometries were tested at equal mass flow rates, corresponding to a range of blowing ratios equal to 0.5, 1.0, and 2.0 for the cylindrical hole. IR (Infrared) thermography was used to evaluate adiabatic film cooling effectiveness, heat transfer coefficient, and the normalized heat flux on the flat surface. Results showed that the presence of rounded corners or webbing did not lower the performance of the tripod cooling holes. Both tripod hole geometries, with and without manufacturing features, yielded higher film cooling effectiveness compared to the cylindrical holes and slightly higher effectiveness than the shaped holes, while consuming 50% less coolant when operating at the same blowing ratio. Furthermore, the heat transfer coefficient measurements and the overall heat flux ratios further corroborated the thermal advantages of the tripod hole design over traditional cylindrical and shaped holes.

View Accepted Manuscript (DOE)

Research Organization:: National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)

Sponsoring Organization:: USDOE

OSTI ID:: 1481272

Journal Information:: International Journal of Heat and Mass Transfer, Journal Name: International Journal of Heat and Mass Transfer Journal Issue: C Vol. 94; ISSN 0017-9310

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

References (22)

Effects of hole geometry and density on three-dimensional film cooling Goldstein, R. J.; Eckert, E. R. G.; Burggraf, F. International Journal of Heat and Mass Transfer, Vol. 17, Issue 5 https://doi.org/10.1016/0017-9310(74)90007-6	journal	May 1974
Film-cooling holes with expanded exits: near-hole heat transfer coefficients Gritsch, Michael; Schulz, Achmed; Wittig, Sigmar International Journal of Heat and Fluid Flow, Vol. 21, Issue 2 https://doi.org/10.1016/S0142-727X(99)00076-4	journal	April 2000
Film cooling effectiveness and heat transfer analysis of a hybrid scheme with different outlet configurations Ghorab, Mohamed G. Applied Thermal Engineering, Vol. 63, Issue 1 https://doi.org/10.1016/j.applthermaleng.2013.10.005	journal	February 2014
Effect of hole imperfection on adiabatic film cooling effectiveness Jovanović, M. B.; de Lange, H. C.; van Steenhoven, A. A. International Journal of Heat and Fluid Flow, Vol. 29, Issue 2 https://doi.org/10.1016/j.ijheatfluidflow.2007.11.008	journal	April 2008
High-Resolution Measurements of Local Effectiveness From Discrete Hole Film Cooling Baldauf, S.; Schulz, A.; Wittig, S. Journal of Turbomachinery, Vol. 123, Issue 4 https://doi.org/10.1115/1.1371778	journal	February 1999
High-Resolution Measurements of Local Heat Transfer Coefficients From Discrete Hole Film Cooling Baldauf, S.; Schulz, A.; Wittig, S. Journal of Turbomachinery, Vol. 123, Issue 4 https://doi.org/10.1115/1.1387245	journal	February 1999
A Review of Shaped Hole Turbine Film-Cooling Technology Bunker, Ronald S. Journal of Heat Transfer, Vol. 127, Issue 4 https://doi.org/10.1115/1.1860562	journal	March 2005
A Novel Antivortex Turbine Film-Cooling Hole Concept Heidmann, James D.; Ekkad, Srinath Journal of Turbomachinery, Vol. 130, Issue 3 https://doi.org/10.1115/1.2777194	journal	May 2008
Film Cooling With Compound Angle Holes: Adiabatic Effectiveness Schmidt, D. L.; Sen, B.; Bogard, D. G. Journal of Turbomachinery, Vol. 118, Issue 4 https://doi.org/10.1115/1.2840938	journal	October 1996
Adiabatic Wall Effectiveness Measurements of Film-Cooling Holes With Expanded Exits Gritsch, M.; Schulz, A.; Wittig, S. Journal of Turbomachinery, Vol. 120, Issue 3 https://doi.org/10.1115/1.2841752	journal	July 1998
Film-Cooling Effectiveness Downstream of a Single Row of Holes With Variable Density Ratio Sinha, A. K.; Bogard, D. G.; Crawford, M. E. Journal of Turbomachinery, Vol. 113, Issue 3 https://doi.org/10.1115/1.2927894	journal	July 1991
Discrete-Jet Film Cooling: A Comparison of Computational Results With Experiments Leylek, J. H.; Zerkle, R. D. Journal of Turbomachinery, Vol. 116, Issue 3 https://doi.org/10.1115/1.2929422	journal	July 1994
Film Cooling From a Row of Holes Supplemented With Antivortex Holes Dhungel, Alok; Lu, Yiping; Phillips, Wynn Journal of Turbomachinery, Vol. 131, Issue 2 https://doi.org/10.1115/1.2950059	journal	January 2009
Effects of Cooling Films on the Heat Transfer Coefficient on a Flat Plate With Zero Mainstream Pressure Gradient Hay, N.; Lampard, D.; Saluja, C. L. Journal of Engineering for Gas Turbines and Power, Vol. 107, Issue 1 https://doi.org/10.1115/1.3239667	journal	January 1985
Heat Transfer and Film Cooling Following Normal Injection Through a Round Hole Eriksen, V. L.; Goldstein, R. J. Journal of Engineering for Power, Vol. 96, Issue 4 https://doi.org/10.1115/1.3445854	journal	October 1974
Film Cooling With Large Density Differences Between the Mainstream and the Secondary Fluid Measured by the Heat-Mass Transfer Analogy Pedersen, D. R.; Eckert, E. R. G.; Goldstein, R. J. Journal of Heat Transfer, Vol. 99, Issue 4 https://doi.org/10.1115/1.3450752	journal	November 1977
Effect of Upstream Step on Flat Plate Film-Cooling Effectiveness Using PSP Rallabandi, Akhilesh P.; Grizzle, Joshua; Han, Je-Chin Journal of Turbomachinery, Vol. 133, Issue 4 https://doi.org/10.1115/1.4002422	journal	April 2011
Film-Cooling Performance of Antivortex Hole on a Flat Plate LeBlanc, Christopher; Narzary, Diganta P.; Ekkad, Srinath Journal of Turbomachinery, Vol. 135, Issue 6 https://doi.org/10.1115/1.4023436	journal	September 2013
The Influence of Coolant Supply Geometry on Film Coolant Exit Flow and Surface Adiabatic Effectiveness Burd, Steven W.; Simon, Terrence W. ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition, Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration https://doi.org/10.1115/97-GT-025	conference	December 2014
NETL Research Efforts on Development and Integration of Advanced Material Systems and Airfoil Cooling Configurations for Future Land-Based Gas Turbine Engines Alvin, M. A.; Klinger, J.; McMordie, B. ASME Turbo Expo 2014: Turbine Technical Conference and Exposition, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy https://doi.org/10.1115/GT2014-25640	conference	September 2014
Gas Turbine Film Cooling Bogard, D. G.; Thole, K. A. Journal of Propulsion and Power, Vol. 22, Issue 2 https://doi.org/10.2514/1.18034	journal	March 2006
The Impact of Manufacturing Techniques on Film Cooling Effectiveness Johnson, Perry L.; Ricklick, Mark; Kapat, Jayanta S. 49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference https://doi.org/10.2514/6.2013-3745	conference	July 2013

Cited By (2)

Shape-optimization of round-to-slot holes for improving film cooling effectiveness on a flat surface Huang, Ying; Zhang, Jing-zhou; Wang, Chun-hua Heat and Mass Transfer, Vol. 54, Issue 6 https://doi.org/10.1007/s00231-017-2272-4	journal	January 2018
Uncertainty Quantification of the Effects of Small Manufacturing Deviations on Film Cooling: A Fan-Shaped Hole Shi, Wei; Chen, Pingting; Li, Xueying Aerospace, Vol. 6, Issue 4 https://doi.org/10.3390/aerospace6040046	journal	April 2019

Similar Records

Sweeping Jet Film Cooling on a Turbine Vane

Journal Article · Tue Jan 15 23:00:00 EST 2019 · Journal of Turbomachinery · OSTI ID:1614250

Effects of free-stream turbulence and surface roughness on laterally injected film cooling

Conference · Tue Jul 01 00:00:00 EDT 1997 · OSTI ID:20014399

Effects of injection angle orientation on concave and convex surfaces film cooling

Journal Article · Wed Jan 14 23:00:00 EST 2009 · Experimental Thermal and Fluid Science · OSTI ID:21137944

Related Subjects

42 ENGINEERING
Anti-vortex holes
Film cooling
Gas turbines
Shaped holes
Tripod holes

Analysis of film cooling performance of advanced tripod hole geometries with and without manufacturing features

Citation Formats

References (22)

Cited By (2)

Similar Records

Related Subjects