A computational fluid dynamics (CFD) method has been applied to gear configurations with and without shrouding. The goals of this work have been to validate the numerical and modeling approaches used for these applications and to develop physical understanding of the aerodynamics of gear windage loss. Several spur gear geometries are considered, for which experimental data are available. Various canonical shrouding configurations and free spinning (no shroud) cases are studied. Comparisons are made with experimental data from open literature, and data recently obtained in the NASA Glenn Research Center Gear Windage Test Facility, Cleveland, OH. The results show good agreement with the experiment. The parametric shroud configuration studies carried out in the Glenn experiments and the CFD analyses elucidate the physical mechanisms of windage losses as well as mitigation strategies due to shrouding and newly proposed tooth contour modifications.
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March 2011
Research Papers
CFD Analysis of Gear Windage Losses: Validation and Parametric Aerodynamic Studies
Matthew J. Hill,
Matthew J. Hill
Graduate Research Assistant
Department of Aerospace Engineering,
mjh414@psu.edu
Pennsylvania State University
, University Park, PA 16802
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Robert F. Kunz,
Robert F. Kunz
Senior Scientist
Applied Research Laboratory,
rfk102@arl.psu.edu
Pennsylvania State University
, University Park, PA 16802
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Richard B. Medvitz,
Richard B. Medvitz
Research Associate
Applied Research Laboratory,
rbm120@arl.psu.edu
Pennsylvania State University
, University Park, PA 16802
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Robert F. Handschuh,
robert.f.handschuh@nasa.gov
Robert F. Handschuh
Aerospace Engineer
NASA Glenn Research Center
, Cleveland, OH 44135
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Lyle N. Long,
Lyle N. Long
Professor
Department of Aerospace Engineering,
lnl@psu.edu
Pennsylvania State University
, University Park, PA 16802
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Ralph W. Noack,
Ralph W. Noack
Research Associate
Applied Research Laboratory,
rwn10@arl.psu.edu
Pennsylvania State University
, University Park, PA 16802
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Philip J. Morris
Philip J. Morris
Boeing/A.D. Welliver Professor
Department of Aerospace Engineering,
pjmaer@engr.psu.edu
Pennsylvania State University
, University Park, PA 16802
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Matthew J. Hill
Graduate Research Assistant
Department of Aerospace Engineering,
Pennsylvania State University
, University Park, PA 16802mjh414@psu.edu
Robert F. Kunz
Senior Scientist
Applied Research Laboratory,
Pennsylvania State University
, University Park, PA 16802rfk102@arl.psu.edu
Richard B. Medvitz
Research Associate
Applied Research Laboratory,
Pennsylvania State University
, University Park, PA 16802rbm120@arl.psu.edu
Robert F. Handschuh
Aerospace Engineer
Lyle N. Long
Professor
Department of Aerospace Engineering,
Pennsylvania State University
, University Park, PA 16802lnl@psu.edu
Ralph W. Noack
Research Associate
Applied Research Laboratory,
Pennsylvania State University
, University Park, PA 16802rwn10@arl.psu.edu
Philip J. Morris
Boeing/A.D. Welliver Professor
Department of Aerospace Engineering,
Pennsylvania State University
, University Park, PA 16802pjmaer@engr.psu.edu
J. Fluids Eng. Mar 2011, 133(3): 031103 (10 pages)
Published Online: March 16, 2011
Article history
Received:
August 23, 2010
Revised:
January 30, 2011
Online:
March 16, 2011
Published:
March 16, 2011
Citation
Hill, M. J., Kunz, R. F., Medvitz, R. B., Handschuh, R. F., Long, L. N., Noack, R. W., and Morris, P. J. (March 16, 2011). "CFD Analysis of Gear Windage Losses: Validation and Parametric Aerodynamic Studies." ASME. J. Fluids Eng. March 2011; 133(3): 031103. https://doi.org/10.1115/1.4003681
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