... compressors stall inception rotating stall diffuser stall flow instability K. C. Wong Education Foundation 10.13039/501100012692 GJTD-2019-09 National Major Science and Technology Projects of China 10.13039/501100013076 2017-II-0002-0014 Centrifugal compressors are widely...

...) in black and white with overlaid vorticity contours (to show separation) in the tip gap during the occurrence of the hot spot (Case 1) and before the occurrence of the hot spot (Case 2), respectively. The shocks are indicated by solid red lines. blades flow instability heat transfer Navier...

... 2010 31 12 2010 21 07 2011 21 07 2011 compressible flow compressors finite difference methods flow instability Mach number rotational flow singular value decomposition vaneless diffuser rotating stall 3D compressible flow linear inviscid model The radial...

... with the reattachment process. blades boundary layer turbulence bubbles flow instability flow separation laminar flow plates (structures) The test-plate used in the present study is of 1220 mm length, 756 mm width, and 25.4 mm thickness and is made of medium-density fiber (MDF) board. The test...

... blade profile. 22 08 2008 26 06 2009 14 07 2011 14 07 2011 blades bubbles flow control flow instability flow separation gas turbines jets wakes With the trend toward higher bypass ratios in turbofans, demands are increasing for the low pressure turbines (LPTs...

... and the jet, which is largely determined by the blowing ratio. 28 06 2010 23 07 2010 28 06 2011 28 06 2011 aerospace engines cooling films flow instability jets turbines Large gains in aero-engine efficiency and turbine specific work have been made possible by raising...

... 05 2011 25 05 2011 aerodynamics blades computational fluid dynamics flow instability flow simulation heat transfer rotors turbines hot-streak OTDF RTDF HP turbine heat transfer aerothermodynamics HP rotor rotor casing The mainstream gas temperature...

... are currently deployed on most civil aircraft ( 3 ). Currently, propfans are being extensively studied again due to their potential for reduced environmental impact and their inherent noise challenge. aerospace propulsion aircraft computational fluid dynamics fans flow instability flow simulation...

... separation point and the synthetic jet is just at the separation point. 03 10 2007 12 02 2010 21 04 2011 21 04 2011 actuators compressors flow control flow instability flow separation jets Navier-Stokes equations In the modern aero-engine design, the tendency toward...

... was also turned off, as well as turning off all the terms. Turning off all the terms essentially has the effect of running with a clean inlet. 23 09 2009 24 11 2009 18 11 2010 18 11 2010 flow instability flow simulation rotors transonic flow turbogenerators vortices...

... can be seen all along the pressure side edge and penetrate well into the passage. 27 08 2009 22 05 2010 15 11 2010 15 11 2010 blades flow instability flow simulation gas turbines heat transfer Navier-Stokes equations turbulence wakes gas turbine heat transfer...

... flow instability mechanical engineering computing nozzles turbomachinery In view of recently rising primary energy costs and the demand to reduce the emission of greenhouse gases, new technologies have to be implemented promising increased efficiency in turbomachinery. Although modern...

... the previous history of the flow. Were this assumption valid, the turbocharger’s unsteady performance could be predicted as an integration of steady behavior on a case-by-case basis. compressors flow instability interpolation pulsatile flow turbines 21 07 2009 13 08 2009 11 11...

... blade rows so as to achieve the desired compressor overall stability characteristics over the full range of operation of the compressor. 05 08 2009 05 10 2009 11 11 2010 11 11 2010 aerodynamics blades compressors ducts flow instability mechanical...

... be captured by the present Fourier solution with even one harmonic. 14 07 2009 04 08 2009 25 10 2010 25 10 2010 cavitation discs (structures) flow instability Fourier analysis heat transfer rotors vortices The overall efficiency of gas turbines is strongly dependent...

... 2009 25 10 2010 25 10 2010 blades cooling engines flow instability flow separation Mach number pressure measurement pulsatile flow temperature measurement turbulence wakes Modern turbo-engine design has been showing a trend toward highly loaded turbine blades in order...

... flow instability rotors transonic flow Therefore, a conclusion can be reached: Peak efficiency and stall margin each has a nonlinear functional relationship with the excitation frequency of the casing treatment. Meanwhile, the optimal excitation frequency for efficiency (maximum peak...

... of inlet stagnation pressure profile for different amplitudes of inlet nonuniformity 20 07 2009 20 08 2009 21 10 2010 21 10 2010 blades compressors flow instability rotors stagnation flow transonic flow vortices wakes The design of highly loaded, high Mach...

..., the implications of these findings for the design of casing grooves of different depths are discussed. 20 07 2009 28 07 2009 20 10 2010 20 10 2010 aerodynamics blades compressors flow instability subsonic flow Aircraft jet engines must be capable of operating safely away...

... ω angular frequency of an unsteadiness m ̇ mass flow rate π pressure rate Δ s entropy generation rate 08 07 2009 23 07 2009 23 09 2010 23 09 2010 aerodynamics blades damping design engineering elasticity flow...