An experimental and numerical study was performed about the influence of incoming wakes and the calming effect on a very high-lift low-pressure turbine rotor blade. The first part of the paper describes the experimental determination of the pressure loss coefficient and the heat transfer around the blade mounted in a high-speed linear cascade. The cascade is exposed to incoming wakes generated by high-speed rotating bars. Their aim is to act upon the transition/separation phenomena. The measurements were conducted at a constant exit Mach number equal to 0.8 and at three Reynolds number values; namely, 190,000, 350,000, and 650,000. The inlet turbulence level was fixed at 0.8%. An additional feature of this work is to identify the boundary layer status through heat transfer measurements. Compared to the traditionally used hot films, thin film heat flux gages provide fully quantitative data required for code validation. Numerical computations are presented in the second part of the paper.
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e-mail: coton@vki.ac.be
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April 2003
Technical Papers
Unsteady and Calming Effects Investigation on a Very High-Lift LP Turbine Blade—Part I: Experimental Analysis
Thomas Coton,
e-mail: coton@vki.ac.be
Thomas Coton
Turbomachinery and Propulsion Department, von Karman Institute for Fluids Dynamics, 1640 Rhode-Saint-Gene`se, Belgium
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Tony Arts,
Tony Arts
Turbomachinery and Propulsion Department, von Karman Institute for Fluids Dynamics, 1640 Rhode-Saint-Gene`se, Belgium
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Michae¨l Lefebvre,
Michae¨l Lefebvre
Snecma Moteurs—Turbine Aero-Cooling Department, Center de Villaroche, 77550 Moissy Cramayel, France
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Nicolas Liamis
Nicolas Liamis
Snecma Moteurs—Turbine Aero-Cooling Department, Center de Villaroche, 77550 Moissy Cramayel, France
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Thomas Coton
Turbomachinery and Propulsion Department, von Karman Institute for Fluids Dynamics, 1640 Rhode-Saint-Gene`se, Belgium
e-mail: coton@vki.ac.be
Tony Arts
Turbomachinery and Propulsion Department, von Karman Institute for Fluids Dynamics, 1640 Rhode-Saint-Gene`se, Belgium
Michae¨l Lefebvre
Snecma Moteurs—Turbine Aero-Cooling Department, Center de Villaroche, 77550 Moissy Cramayel, France
Nicolas Liamis
Snecma Moteurs—Turbine Aero-Cooling Department, Center de Villaroche, 77550 Moissy Cramayel, France
Contributed by the International Gas Turbine Institute and presented at the International Gas Turbine and Aeroengine Congress and Exhibition, Amsterdam, The Netherlands, June 3–6, 2002. Manuscript received by the IGTI December 21, 2001. Paper No. 2002-GT-30227. Review Chair: E. Benvenuti.
J. Turbomach. Apr 2003, 125(2): 281-290 (10 pages)
Published Online: April 23, 2003
Article history
Received:
December 21, 2001
Online:
April 23, 2003
Citation
Coton, T., Arts, T., Lefebvre , M., and Liamis, N. (April 23, 2003). "Unsteady and Calming Effects Investigation on a Very High-Lift LP Turbine Blade—Part I: Experimental Analysis ." ASME. J. Turbomach. April 2003; 125(2): 281–290. https://doi.org/10.1115/1.1556013
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