... stiffnesses and added mass coefficients; the latter was previously ignored or largely under predicted. 21 06 2011 22 06 2011 01 03 2012 01 03 2012 compressors finite element analysis hydrodynamics lubricating oils machine bearings rotors Oil seals are used...

... testing elasticity machine bearings rotors Tilting-pad journal bearings (TPJBs) are commonly used in rotating machines because of their substantial stability benefits over conventional, fixed-geometry journal bearings. TPJBs have multiple pads that rotate to balance fluid film forces, directing...

... in LOP Configuration ,” Proceedings of the ASME Turbo Expo 2011 , Vol. 1 , ASME, New York. 12 09 2010 22 09 2011 23 02 2012 23 02 2012 compressors gas turbines machine bearings rotors vibration measurement Rotordynamic instability is a self-excited vibration...

... compared to the values at room temperature. 13 04 2011 09 09 2011 15 02 2012 15 02 2012 computational fluid dynamics cooling damping elasticity gas turbine power stations gas turbines hydrodynamics impellers machine bearings perturbation techniques rotors shafts...

... flow rate from the compressor increased from 21 to 74 g/s. The average TC compressor exit power was estimated at ∼34% of the turbine inlet power over this range. 31 03 2011 18 07 2011 04 01 2012 04 01 2012 compressors diesel engines heat transfer machine bearings...

... 2011 28 12 2011 28 12 2011 abrasion aerodynamics aerospace components aerospace propulsion friction machine bearings rotors turbomachinery hybrid air foil bearing oil-free aero-propulsion Air/gas foil bearings (AFBs) have shown promise in high-speed micro...

... of the available models for such devices. compressors convection lubrication machine bearings rotors 27 04 2011 03 05 2011 20 12 2011 20 12 2011 2012 American Society of Mechanical Engineers ...

... 12 2011 machine bearings motor drives strain gauges temperature measurement turbomachinery gas foil bearings bump-type foil bearings thermal performance measurement oil-free turbomachinery Gas foil bearings (GFBs) have been widespread in various high speed and high...

... of GFBs. damping elastic constants machine bearings net structures (mechanical) rotors stainless steel 12 04 2011 17 04 2011 27 10 2011 27 10 2011 2012 American Society of Mechanical Engineers ...

... damping elastic constants impact (mechanical) machine bearings rotors stress analysis turbomachinery The metal mesh foil bearing (MMFB) is a novel gas bearing technology that aims to provide reliable support in microturbomachinery ( < 0.5   MW ) operating at high speed...

... this measurement by developing a patented, high-frequency, high-amplitude shaker system, resulting in excitation over most of the subsynchronous range. 10 05 2010 09 08 2010 06 05 2011 06 05 2011 damping design engineering machine bearings mechanical testing rotors turbomachinery...

... coefficients and within 30% for the direct damping coefficients. 09 05 2010 31 07 2010 19 04 2011 19 04 2011 lubrication machine bearings machine testing rotors turbomachinery Tilting pad journal bearings (TPJBs) are widely used in the turbomachinery industry to help...

.... machine bearings shafts torque measurement 2011 American Society of Mechanical Engineers ...

... 2010 19 07 2010 08 04 2011 08 04 2011 computational fluid dynamics laser Doppler anemometry lubrication machine bearings shafts bearing chamber aero engine air-oil-flow porous media CFD To a large extent, the design of bearing chambers has been based...

.... 264 – 270 . 10.1115/1.2930343 05 08 2009 21 08 2009 06 04 2011 06 04 2011 damping machine bearings rockets rotors turbomachinery Tilting pad (TP) journal bearings have long been the bearing of choice for high-speed turbomachines. The inherent stability...

... applications, commercialized or under development, include aircraft gas turbine engines, auxiliary power units, microturbines, pumps, compressors, cryogenic turboexpanders, and turbochargers, for example ( 3 ). cooling gas turbines machine bearings rotors shafts temperature measurement 09...

..., benchmarked by the measurements, furthers the application of GFBs in high temperature oil-free rotating machinery. gas turbines heat transfer machine bearings rotors shafts thermal expansion thermal management (packaging) thermoelasticity Adequate thermal management of a hot rotor-GFB system...

... excitations. 04 11 2009 21 06 2010 18 11 2010 18 11 2010 aerospace components aerospace engines damping design engineering elasticity finite difference methods friction hydrostatics machine bearings orifices (mechanical) turbomachinery air foil thrust bearing...

... fluid dynamics heat transfer machine bearings pipe flow temperature distribution two-phase flow vents (mechanical components) Advanced aircraft engine development dictates high standards of reliability for the lubrication systems not only in terms of the proper lubrication of the bearings...

... machine bearings turbomachinery Implementing gas foil bearings (GFBs) in high power density microturbomachinery ( < 250   kW ) increases mechanical efficiency, reliability, and operating life while reducing system complexity and maintenance costs ( 1 ). A radial foil bearing...