In gas turbine engines, film cooling holes are often fed by an internal crossflow, with flow normal to the direction of the external flow around the airfoil. Many experimental studies have used a quiescent plenum to feed model film cooling holes and thus do not account for the effects of internal crossflow. In this study, an experimental flat plate facility was constructed to study the effects of internal crossflow on a row of cylindrical compound angle film cooling holes. There are relatively few studies available in literature that focus on the effects of crossflow on film cooling performance, with no studies examining the effects of internal crossflow on film cooling with round, compound angled holes. A crossflow channel allowed for coolant to flow alternately in either direction perpendicular to the mainstream flow. Experimental conditions were scaled to match realistic turbine engine conditions at low speeds. Cylindrical compound angle film cooling holes were operated at blowing ratios ranging from 0.5 to 2.0 and at a density ratio (DR) of 1.5. The results from the crossflow experiments were compared to a baseline plenum-fed configuration. This study showed that significantly greater adiabatic effectiveness was achieved for crossflow counter to the direction of coolant injection.
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e-mail: jmcclintic@utexas.edu
e-mail: seanyklav@gmail.com
e-mail: james.winka@ge.com
e-mail: mranderson@utexas.edu
e-mail: dbogard@mail.utexas.edu
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July 2015
Research-Article
The Effect of Internal Crossflow on the Adiabatic Effectiveness of Compound Angle Film Cooling Holes
John W. McClintic,
e-mail: jmcclintic@utexas.edu
John W. McClintic
The University of Texas at Austin
,204 E. Dean Keeton Street
,Austin, TX 78712
e-mail: jmcclintic@utexas.edu
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Sean R. Klavetter,
e-mail: seanyklav@gmail.com
Sean R. Klavetter
The University of Texas at Austin
,204 E. Dean Keeton Street
,Austin, TX 78712
e-mail: seanyklav@gmail.com
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James R. Winka,
e-mail: james.winka@ge.com
James R. Winka
1
The University of Texas at Austin
,204 E. Dean Keeton Street
,Austin, TX 78712
e-mail: james.winka@ge.com
1Present address: GE Global Research.
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Joshua B. Anderson,
e-mail: mranderson@utexas.edu
Joshua B. Anderson
The University of Texas at Austin
,204 E. Dean Keeton Street
,Austin, TX 78712
e-mail: mranderson@utexas.edu
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David G. Bogard,
e-mail: dbogard@mail.utexas.edu
David G. Bogard
The University of Texas at Austin
,204 E. Dean Keeton Street
,Austin, TX 78712
e-mail: dbogard@mail.utexas.edu
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Robert Briggs
Robert Briggs
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John W. McClintic
The University of Texas at Austin
,204 E. Dean Keeton Street
,Austin, TX 78712
e-mail: jmcclintic@utexas.edu
Sean R. Klavetter
The University of Texas at Austin
,204 E. Dean Keeton Street
,Austin, TX 78712
e-mail: seanyklav@gmail.com
James R. Winka
The University of Texas at Austin
,204 E. Dean Keeton Street
,Austin, TX 78712
e-mail: james.winka@ge.com
Joshua B. Anderson
The University of Texas at Austin
,204 E. Dean Keeton Street
,Austin, TX 78712
e-mail: mranderson@utexas.edu
David G. Bogard
The University of Texas at Austin
,204 E. Dean Keeton Street
,Austin, TX 78712
e-mail: dbogard@mail.utexas.edu
Jason E. Dees
Gregory M. Laskowski
Robert Briggs
1Present address: GE Global Research.
Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the JOURNAL OF TURBOMACHINERY. Manuscript received October 10, 2014; final manuscript received October 20, 2014; published online December 29, 2014. Editor: Ronald S. Bunker.
J. Turbomach. Jul 2015, 137(7): 071006 (10 pages)
Published Online: July 1, 2015
Article history
Received:
October 10, 2014
Revision Received:
October 20, 2014
Online:
December 29, 2014
Citation
McClintic, J. W., Klavetter, S. R., Winka, J. R., Anderson, J. B., Bogard, D. G., Dees, J. E., Laskowski, G. M., and Briggs, R. (July 1, 2015). "The Effect of Internal Crossflow on the Adiabatic Effectiveness of Compound Angle Film Cooling Holes." ASME. J. Turbomach. July 2015; 137(7): 071006. https://doi.org/10.1115/1.4029157
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