... presents the crucial knowledge that has been published on the flow instabilities occurring in centrifugal compressors operating at low flow rates. It also introduces the capabilities of the computational tools used for the simulation of these phenomena. The characteristic of the centrifugal compressor...

... for the circumferential averaging interface differ, contrary to the flow parameters, due to smoothing of local effects from the preswirl jets. 31 05 2011 28 06 2011 21 02 2012 21 02 2012 computational fluid dynamics Coriolis force flow instability flow simulation heat transfer jets...

... speed fans this is a promising tool. This paper focuses on the inception and the evolution of the flow instabilities in the tip region which drive the stall onset in low speed axial fans. The authors conducted an experimental study to investigate the inception patterns of rotating stall evolution...

... NO on the midplane from the LES-PaSR model chemically reactive flow combustion combustion equipment flames flow instability flow simulation gas turbines swirling flow turbulence large eddy simulation turbulence chemistry interaction models validation Present-day combustion models...

... direction. This is the reason why only 2% of the flow amounts would get 20% of the working range expansion. 12 05 2011 12 05 2011 25 01 2012 25 01 2012 compressors flow instability flow simulation impellers numerical analysis centrifugal compressor holed casing...

... and eigenfunctions flames flow instability flow simulation Navier-Stokes equations transfer functions turbulence Stringent emission regulations (for NO x , CO, etc.) have been established for gas turbines. In order to comply with these regulations, lean premixed combustion technology has been...

... 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...

... check valve design spring stiffness compressors elasticity flow instability fluid oscillations hydrodynamics nozzles springs (mechanical) valves It is important to recognize that the main function of the check valves is primarily to protect the compressor unit from damage due...

... flow instability interpolation steam turbines two-phase flow Environmental issues, such as global warming due to carbon dioxide emissions and natural resource conservation, continue to receive much attention. Electricity generation is responsible for a large proportion of carbon dioxide...

... reactive flow combustion flames flow instability fluid oscillations functional analysis laminar flow pipe flow Reduction of pollutant emissions to meet environmental regulations has led to novel solutions in combustor design. Advanced systems use new premixed burners in which the flame...

... investigation. The flow solver also provided detailed physical insight into the cavity flow instability mechanism. Fluid instabilities in hole-pattern and honeycomb stator seals have been extensively investigated in recent years ( 1 2 3 4 5 ). The results of this body of research indicate that rotor shaft...

... ). combustion instability linear stability analysis active instability control acoustic boundary condition acoustic analysis combustion flow instability stability swirling flow test equipment thermoacoustics 06 05 2009 22 07 2009 20 08 2010 20 08 2010 As has been...

... 15,200 rpm) aerodynamics damping elastic constants flow instability Mach number rotors sealing materials transfer functions Labyrinth seals are used widely in turbomachinery to reduce leakage. However, they are known to cause lateral rotordynamic instabilities. A tooth-on-stator...

... flow instability heat transfer nuclear engineering computing thermal analysis supercritical linear nonlinear stability natural circulation Supercritical water (SCW) is being considered as a coolant in some advanced nuclear reactor designs on account of its potential to offer high...

... rotors flow instability compressors impellers Mach number pistons compressible flow swirling flow flow simulation rotordynamic coefficients impeller-shroud forces Multistage centrifugal compressors using shrouded impellers have been notably subject to rotordynamic instabilities...

.... 24 02 2009 24 08 2009 20 05 2010 20 05 2010 automobile industry automotive components cavitation computational fluid dynamics drops flow instability fuel systems hydrodynamics internal combustion engines nozzles petroleum shear turbulence two-phase flow...

... flow instability surges transient analysis The possible operating points of a centrifugal gas compressor operated at variable speeds are shown in the head-flow characteristic in Fig. 1 . The operating range is limited by maximum and minimum operating speed, maximum available power, choke...

... under Grant No. G1999022303 is gratefully acknowledged. 08 04 2009 28 04 2009 04 03 2010 04 03 2010 combustion flames flow instability flow simulation flow visualisation turbulence velocity measurement large eddy simulation bluff-body nonpremixed combustion...

....2005.10.002 , 32 ( 2 ), pp. 93 – 161 . 24 07 2008 06 09 2008 05 06 2009 combustion flow control flow instability swirling flow turbulence perforated plate impedance passive control flame-acoustic interaction combustion instabilities nonlinear acoustics...

... body, which energizes the diffusion and mixing process. 07 06 2008 15 10 2008 22 05 2009 combustion damping diffusion flames flow instability fluid oscillations mixing pipe flow vortices wakes combustion instability bluff body stabilization diffusion flames...