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Keywords: flow instability
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Journal Articles
Article Type: Research Papers
J. Turbomach. October 2022, 144(10): 101010.
Paper No: TURBO-20-1318
Published Online: April 21, 2022
... and time-averaged values θ = circumferential position Ω = rotation speed of impeller LE = leading edge centrifugal compressors stall inception rotating stall diffuser stall flow instability References [1] Moore , F. , and Greitzer , E. , 1986...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2012, 134(4): 041022.
Published Online: July 25, 2011
... explained. 02 11 2010 12 09 2010 25 07 2011 25 07 2011 blades flow instability heat transfer Navier-Stokes equations rotors subsonic flow transonic flow turbines turbulence The efficiency of a jet engine is linked to the turbine inlet temperature...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2012, 134(4): 041010.
Published Online: July 21, 2011
... 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...
Journal Articles
Article Type: Research Papers
J. Turbomach. May 2012, 134(3): 031019.
Published Online: July 15, 2011
... 2011 15 07 2011 blades boundary layer turbulence bubbles flow instability flow separation laminar flow plates (structures) Although modern gas-turbine engines are highly developed, small improvements in performance can still yield significant economic benefits. Since...
Journal Articles
Article Type: Research Papers
J. Turbomach. May 2012, 134(3): 031009.
Published Online: July 14, 2011
... 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...
Journal Articles
Article Type: Research Papers
J. Turbomach. March 2012, 134(2): 021015.
Published Online: June 28, 2011
... effectiveness. aerospace engines cooling films flow instability jets turbines 28 06 2010 23 07 2010 28 06 2011 28 06 2011 The mean variation in the C D with increasing M is shown in Fig. 5 . The C D for the fan-shaped hole is larger than...
Journal Articles
Article Type: Research Papers
J. Turbomach. January 2012, 134(1): 011005.
Published Online: May 25, 2011
... in the steady flow environment). 01 07 2010 04 07 2010 25 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...
Journal Articles
Article Type: Research Papers
J. Turbomach. January 2012, 134(1): 011002.
Published Online: May 24, 2011
... 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 jet engines rotors...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2011, 133(4): 041016.
Published Online: April 21, 2011
... 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...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2011, 133(3): 031018.
Published Online: November 18, 2010
... the tip. In addition, different components of the average passage body forces (deterministic stresses) are explored that shows the main terms are the axial momentum and the metal blockage. 23 09 2009 24 11 2009 18 11 2010 18 11 2010 flow instability flow simulation rotors...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2011, 133(3): 031010.
Published Online: November 15, 2010
... 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 unsteady CFD casing hub endwall temperature wake...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2011, 133(3): 031009.
Published Online: November 12, 2010
... 2009 12 11 2010 12 11 2010 aerodynamics compressors computational fluid dynamics 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...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2011, 133(3): 031001.
Published Online: November 11, 2010
... that the unequal admission loss is not as significant in pulsating flow as it is in steady flow. 21 07 2009 13 08 2009 11 11 2010 11 11 2010 compressors flow instability interpolation pulsatile flow turbines Pulse turbocharging is widely used in a variety of internal...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2011, 133(3): 031004.
Published Online: November 11, 2010
... aerodynamics blades compressors ducts flow instability mechanical stability The operable range of compressors is limited by the aerodynamic stability boundary, which is also known as the stall line or surge line. Much research has been aimed at trying to clarify the mechanism of the instability...
Journal Articles
Article Type: Research Papers
J. Turbomach. April 2011, 133(2): 021019.
Published Online: October 25, 2010
... 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...
Journal Articles
Article Type: Research Papers
J. Turbomach. April 2011, 133(2): 021018.
Published Online: October 25, 2010
... 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...
Journal Articles
Article Type: Research Papers
J. Turbomach. April 2011, 133(2): 021014.
Published Online: October 22, 2010
... of casing treatment for stall margin improvement is not well understood. It is still implicit which are the most influential parameters and which methods are reasonable to improve compressor performance. blades compressors flow instability rotors transonic flow 22 07 2009 08 08...
Journal Articles
Article Type: Research Papers
J. Turbomach. April 2011, 133(2): 021010.
Published Online: October 21, 2010
... calculations are presented to give estimates of the magnitude and nature of this phenomenon. 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...
Journal Articles
Article Type: Research Papers
J. Turbomach. April 2011, 133(2): 021007.
Published Online: October 20, 2010
..., 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...
Journal Articles
Article Type: Research Papers
J. Turbomach. January 2011, 133(1): 011021.
Published Online: September 23, 2010
... Power 0742-4795 , 106 , pp. 279 – 287 . 10.1115/1.3239560 08 07 2009 23 07 2009 23 09 2010 23 09 2010 aerodynamics blades damping design engineering elasticity flow instability Navier-Stokes equations The demand in turbomachine designs for higher...