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Tribology Group Year XX

31 th TRC meeting. Tribology Group Year XX. May 2011. Luis San Andres Mast-Childs Professor Turbomachinery Laboratory Mechanical Engineering Department Texas A&M University. http://rotorlab.tamu.edu. Tribology Group. Mission:

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Tribology Group Year XX

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  1. 31thTRC meeting Tribology Group Year XX May 2011 Luis San Andres Mast-Childs Professor Turbomachinery Laboratory Mechanical Engineering Department Texas A&M University http://rotorlab.tamu.edu

  2. Tribology Group Mission: To advance state of the art in fluid film bearings for high performance turbomachinery Types of funded research projects: • Engineering science fundamentals & development of computational engineering tools, • Experimental – Bearing & Seal parameter identification • Test-product verification & design validation • Education

  3. 2010-2011 Tribology Group Students Missing Keun Ryu (Borg-Warner) UGs James Law Sarabeth Froneberger

  4. Industry Grants SFD EXPERIMENTAL TESTING & ANALYTICAL METHODS DEVELOPMENT Large load (500 lbf) SFD test rigPratt & Whitney (08/08-12/10) $ 330k Static loader Shaker assembly (Y direction) Shaker assembly (X direction) Static loader Shaker in Y direction Shaker in X direction SFD test bearing TEST RIG available for further identification of commercial SFDS

  5. Analysis/test product verification & design validation VIRTUAL TOOL for TC rotordynamics Integration of nonlinear rotordynamics & bearing performance – reduces time for prototype development (35%) and saves costs in product development (30%) Honeywell Turbocharging Technologies(2001-2012) Predicted shaft motion Measured shaft motion

  6. Analysis/test product verification & design validation Thermal Energy Transport Analysis for Floating Ring Bearings in Turbochargers Honeywell Turbocharging Technologies (09/10-09/12) $ 208k Analysis of hydrodynamic bearing with enhancements in heat transfer model +prediction capability of external excitation and frequency response function modeling capability

  7. HALO™ Seal 2010-11 TRC funding Measurement of leakage in a novel all metal non-contacting annular seal at high temperatures TRC(10-11) $ 39.8k (1st year) High temperature seal test rig (300 C=572 F)

  8. Flow factor Hybrid Brush Seal HALO™ Seal Compare leakage: four seal types Flow factor Φ for four seal types versus inlet/exhaust pressure ratio [Ps/Pe] for increasing gas inlet temperatures (300 °C).

  9. Carter & Childs, ASME GT2008-50069 2010-11 TRC funding Computational model for tilting pad journal bearings TRC(10-11) $ 34.8k (1st year) For high load bearings (> 150 psi), improve correlation to experimentally derived force coefficients by adding pad-pivot flexibility and fluid energy transport & thermal effects

  10. 2010-11 TRC funding Automated Analysis of XLTRC2 Time Transient Responses in Nonlinear Rotor Bearing Systems TRC(10-11) $ 34.8k (1 year) Automate output of XLTRC2 time response of NL rotor-bearing motions & characterize frequency and modal content

  11. Other projects Computational analysis of textured gas face seals for steam turbines CIATEQ A.C. (Mexico) (2010-11) Support 1 grad student Model novel textured face seal geometries and develop GUI for whole seal cartridge. Replacements to carbon rings increase turbine efficiency and reduce leakage Typical steam turbine for lubrication system mechanical drive Non-contacting gas face seal with textured grooves

  12. Unfunded projects Gas bearings for high turbomachinery: • Thermal management of foil bearings • Dynamic forced performance of metal mesh foil bearings Support for two students from licensing Gas Seal and Gas Foil Bearing codes Past funding includes TRC (2003-2009) $ 312 k NSF (2003-2006) $ 255.5k NASA GRC (2007-2009) $ 284.6k Capstone (2007) $ 64.7 k State of the art predictive tools benchmarked to test data

  13. Tribology Group Performance Funding $ 208,340 (HTT) + 153.5k (P&W) + $109k (TRC) $ 343.8 k research expenditures (FY 10-11)

  14. Tribology Group Students Prepared for global competency Learn communication skills (written & oral) Training in teams that work and deliver Ready for open-ended multidisciplinary problems with no unique answer Experience in research tied to industrial needs Learn of compelling need for professional integrity Do more with less Graduating 2010/11 PhD Keun Ryu (Borg-Warner) MS Sanjeev Seshagiri MS Paola Mahecha Do more with nothing!

  15. 2011 TRC Research Progress Reports Comparison of leakage between a labyrinth seal and an all-metal compliant gas seal at high temperature(completed TRC-S-02-11) – Alain Anderson presents progress Computational model for tilting pad journal bearings (in progress) – Yujiao Tao presents progress

  16. 2011 TRC Project Proposals Summaries in Tribology Group Annual Report (2011)

  17. 2011 TRC Meeting See also http://rotorlab.tamu.edu/me489 for Practices of Modern Engineering Course Questions: Luis San Andres: Lsanandres@tamu.edu

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