A set of experimental data is presented investigating the unsteady aerodynamics associated with a high pressure turbine vane (HPV) and rotor blade (HPB). The data was acquired at the Turbine Research Facility (TRF) of the Air Force Research Laboratory. The TRF is a transient, blowdown facility generating several seconds of experimental data on full scale engine hardware at scaled turbine operating conditions simulating an actual engine environment. The pressure ratio and freestream Reynolds number were varied for this investigation. Surface unsteady pressure measurements on the HPV, total pressure traverse measurements downstream of the vane, and surface unsteady pressure measurements for the rotor blade were obtained. The unsteady content of the HPV surface was generated by the rotor potential field. The first harmonic decayed more rapidly than the second harmonic with a movement upstream causing the second harmonic to be most influential at the vane throat. The blade unsteadiness appears to be caused by a combination of shock, potential field, and vane wake interactions between the vane and rotor blade. The revolution averaged data resulted in higher unsteadiness than a passing ensemble average for both vane and rotor indicating a need to understand each passage for high cycle fatigue (HCF) effects.
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e-mail: mitch.wolff@wright.edu
e-mail: marc.polanka@wpafb.af.mil
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January 2006
Technical Papers
Unsteady Aerodynamics and Interactions Between a High-Pressure Turbine Vane and Rotor
Ryan M. Urbassik,
Ryan M. Urbassik
Department of Mechanical and Materials Engineering,
Wright State University
, Dayton, OH 45435
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J. Mitch Wolff,
J. Mitch Wolff
Department of Mechanical and Materials Engineering,
e-mail: mitch.wolff@wright.edu
Wright State University
, Dayton, OH 45435
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Marc D. Polanka
e-mail: marc.polanka@wpafb.af.mil
Marc D. Polanka
Air Force Research Laboratory
, Turbines Branch, Wright-Patterson Air Force Base, Wright-Patterson AFB, OH 45433
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Ryan M. Urbassik
Department of Mechanical and Materials Engineering,
Wright State University
, Dayton, OH 45435
J. Mitch Wolff
Department of Mechanical and Materials Engineering,
Wright State University
, Dayton, OH 45435e-mail: mitch.wolff@wright.edu
Marc D. Polanka
Air Force Research Laboratory
, Turbines Branch, Wright-Patterson Air Force Base, Wright-Patterson AFB, OH 45433e-mail: marc.polanka@wpafb.af.mil
J. Turbomach. Jan 2006, 128(1): 35-42 (8 pages)
Published Online: March 1, 2004
Article history
Received:
October 1, 2003
Revised:
March 1, 2004
Citation
Urbassik, R. M., Wolff, J. M., and Polanka, M. D. (March 1, 2004). "Unsteady Aerodynamics and Interactions Between a High-Pressure Turbine Vane and Rotor." ASME. J. Turbomach. January 2006; 128(1): 35–42. https://doi.org/10.1115/1.2098752
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