... chaos friction hydrodynamics impact (mechanical) rings (structures) rotors seals (stoppers) stators vibrations Calculations were performed for the floating ring depicted in Fig. 5 . The floating ring is made of carbon mounted in a steel outer ring. Its dimensions are R 1  =  45.29 mm...

... subsynchronous instabilities that can prevent the full operational capability of the machine. Ongoing research [( 6 ), 7 ] is striving to lower the effective damping crossover frequency in efforts to maximize the useful operating frequency range. compressors mechanical testing rotors seals (stoppers...

... 14 12 2011 bubbles elasticity flow instability hydrocarbon reservoirs laminar flow pumps rotors seals (stoppers) two-phase flow vibration control viscosity Annular (damper) seals restrict secondary leakage between stages in centrifugal pumps and compressors. The working...

... experimental results are given, which have fully confirmed the analytical formulas. friction mechanical contact polynomials rotors seals (stoppers) Rubbing often occurs in rotating machines, due to tight seal clearance, changes in alignment condition, high unbalance response, etc. For many rubs...

... , Athens, Greece, Vol. 26 , pp. 1514 – 1522 . 07 10 2010 06 03 2011 18 05 2011 18 05 2011 flow simulation flowmeters Navier-Stokes equations numerical analysis pressure measurement rotational flow seals (stoppers) turbines turbulence staggered labyrinth seal...

... the stability measurements carried out on two compressors (390 bars and 655 bars discharge pressure) and compares the results. 09 04 2010 13 04 2010 10 03 2011 10 03 2011 compressors finite element analysis mechanical stability pistons rotors seals (stoppers) shock absorbers...

... for multiple cavities. 26 04 2010 29 04 2010 29 10 2010 29 10 2010 aeroacoustics channel flow external flows flow instability flow simulation Navier-Stokes equations seals (stoppers) stators turbomachinery vortices Numerical simulation of annular gas seals...

..., are not monotonic functions if the pressure ratio is kept constant. flow honeycomb structures Mach number Navier-Stokes equations seals (stoppers) surface discharges honeycomb seal leakage flow windage heating total temperature increase Since the operating temperature of the advanced gas...

... Documentation , AEA Technology, Software Ltd. , Waterloo, ON, Canada . 03 03 2009 17 06 2009 16 03 2010 16 03 2010 flow simulation honeycomb structures Navier-Stokes equations seals (stoppers) labyrinth honeycomb seal leakage flow numerical simulation...

... rise in exhaust gas temperature. aerospace engines damping distortion elasticity friction gas turbines hydrodynamics rotors seals (stoppers) shafts wear 23 03 2009 29 03 2009 26 01 2010 26 01 2010 2010 American Society of Mechanical Engineers ...

... , Mechanical and Structural Vibrations , Wiley , New York , pp. 135 – 139 . 02 04 2008 04 04 2008 13 04 2009 machinery nonlinear systems seals (stoppers) vibration control Squeeze film dampers (SFDs) aid to reduce synchronous vibration amplitude and enhance stability...

... 50 cycles when operated at maximum operating conditions. aerospace industry aerospace test facilities eddy current testing fatigue cracks gas turbines jet engines seals (stoppers) NASA’s high temperature high-speed turbine seal test rig (hereafter NASA seal rig) (Fig. 1 ) tests...

... turbines hydrodynamics leak detection loss measurement rotors seals (stoppers) shafts turbomachinery 01 04 2008 02 04 2008 10 10 2008 2009 American Society of Mechanical Engineers ...

... Coefficients in a Squeeze Film Damper With a Mechanical Seal ,” Texas A&M University , TRC Report No. TRC-SFD-1-06. 10 05 2007 06 06 2007 29 04 2008 aircraft flow control friction lubricants mechanical testing orifices (mechanical) seals (stoppers) vibration control...

... points covering a wide range of operating conditions are given in Table 1 . 02 05 2007 06 07 2007 03 03 2008 aerodynamics compressors design engineering impellers machine bearings machinery production industries magnetic bearings mechanical stability rotors seals...

... pressures. 26 04 2007 07 05 2007 11 01 2008 blades design engineering leak detection pressure measurement seals (stoppers) turbomachinery Effect of blade profile on leakage (six blades) As is discussed below, beveling the blades of the test seals increased...

... 2008 compressors damping seals (stoppers) stators Injection compressors require comparatively long annular seals with high-pressure drops that have a significant impact on rotordynamics. The balance-piston seal for straight-through compressor absorbs the full head rise of the machine...

... to that for the contact seal. Outlined as well are the flow features influencing the bristle dynamics. 15 03 2004 15 07 2007 09 01 2008 computational fluid dynamics fibres porous materials rotors sealing materials seals (stoppers) wear Sealing in turbomachinery is a crucial technology...

... the authors predict for this seal and the test conditions provided above? Additional test results are available for the seal in ( 2 ). seals (stoppers) gas turbines elastic constants confined flow 03 01 2007 05 01 2007 2007 American Society of Mechanical...

...Mihai Arghir 03 01 2007 04 01 2007 seals (stoppers) confined flow laminar to turbulent transitions laminar flow turbulence surface roughness The authors are grateful for this experimental validation of the negative direct static stiffness of choked annular seals...