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Keywords: discs (structures)
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Journal Articles
Article Type: Research Papers
J. Turbomach. July 2012, 134(4): 041020.
Published Online: July 25, 2011
... discs (structures) fly ash gas turbines Navier-Stokes equations temperature distribution The continuous demand on performance improvement in gas turbine engines requires the engine components to be designed for higher combustor exit temperatures. Current advanced gas turbine engines operate...
Journal Articles
Article Type: Technical Briefs
J. Turbomach. July 2012, 134(4): 044501.
Published Online: July 19, 2011
... compressors design engineering discs (structures) friction vibrations Bladed disk assemblies in aeroengine compressors are sometimes replaced by bladed disks manufactured as single components, either by welding blades on rotors or by machining entire bladed disks from single pieces of metal. These...
Journal Articles
Article Type: Research Papers
J. Turbomach. April 2011, 133(2): 021020.
Published Online: October 25, 2010
... design-code predictions with those evaluated by CFD. 13 07 2009 29 07 2009 25 10 2010 25 10 2010 computational fluid dynamics confined flow design engineering discs (structures) drag engines flow simulation friction gas turbines heat transfer rotational flow rotors...
Journal Articles
Article Type: Research Papers
J. Turbomach. April 2011, 133(2): 021018.
Published Online: October 25, 2010
... 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): 021011.
Published Online: October 21, 2010
... consequence the experimental data at the rotor exit shows the greatest unsteadiness within the rotor hub passage with the first endwall design. 20 07 2009 21 07 2009 21 10 2010 21 10 2010 blades design engineering discs (structures) jets rotors sealing materials stators...
Journal Articles
Article Type: Technical Briefs
J. Turbomach. October 2010, 132(4): 044501.
Published Online: April 29, 2010
... series expansion can be used to efficiently compute eigenvalues and eigenvectors of a mistuned system. Numerical examples are presented to corroborate the validity of theoretical analysis. 23 01 2008 09 01 2009 29 04 2010 29 04 2010 blades discs (structures) eigenvalues and...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2010, 132(3): 031006.
Published Online: March 24, 2010
... 24 03 2010 24 03 2010 compressors computational fluid dynamics cooling discs (structures) gas turbines maximum entropy methods rotational flow rotors thermodynamics vortices rotating cavity buoyancy far-from-equilibrium thermodynamics self-organizing systems maximum...
Journal Articles
Article Type: Research Papers
J. Turbomach. April 2010, 132(2): 021021.
Published Online: January 21, 2010
... generally more unsteady flow field at the rotor exit near the hub. The injection causes the turbine efficiency to deteriorate by about 0.6%. 20 08 2008 29 08 2008 21 01 2010 21 01 2010 cavitation cooling discs (structures) flow instability gas turbines rotors seals...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2009, 131(4): 041008.
Published Online: July 2, 2009
... frequency mistuning where the stiffness perturbation dominates. aerodynamics blades computational fluid dynamics damping discs (structures) turbomachinery The vast majority of turbomachinery blade mistuning studies have been conducted using only the effect of structural coupling. However...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2009, 131(3): 031007.
Published Online: April 8, 2009
... an academic rotor are presented to establish the validity of the technique. 22 07 2007 22 02 2008 08 04 2009 blades discs (structures) geometry reduced order systems rotors vibrations Mistuning refers to inevitable variations in blades’ properties, which arise...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2009, 131(3): 031002.
Published Online: April 2, 2009
... blade mistuning, which can be characterized by the higher percentage of blades on the total blisk strain energy. 29 01 2007 15 08 2008 02 04 2009 aerospace engines blades discs (structures) fatigue rotors vibrations blisk mistuning mode localization blade vibration...
Journal Articles
Article Type: Research Papers
J. Turbomach. April 2009, 131(2): 021005.
Published Online: January 22, 2009
... for axial gap seals and the experiments showed a reasonable agreement for both close- and wide-spaced stages. 30 03 2007 24 08 2007 22 01 2009 aerospace engines blades cadmium cavitation confined flow cooling discs (structures) flow simulation gas turbines numerical...
Journal Articles
Article Type: Research Papers
J. Turbomach. January 2009, 131(1): 011011.
Published Online: October 17, 2008
... aerodynamics blades computational fluid dynamics discs (structures) elasticity flexible structures rotors vibrations As modern jet engines trend toward lighter-weight designs, rotor loading and flexibility increase, increasing flutter risk. Effective flutter prediction tools and an understanding...
Journal Articles
Article Type: Research Papers
J. Turbomach. January 2008, 130(1): 011011.
Published Online: January 25, 2008
... absolute minimum possible. 16 09 2003 11 01 2007 25 01 2008 blades discs (structures) turbines numerical analysis Bladed disks, such as those in fans, compressors, and turbines, rotate through circumferential pressure disturbances caused by struts, vanes, stators, or other...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2007, 129(4): 730–739.
Published Online: August 15, 2006
... disk analyses should incorporate Coriolis effects in order to represent accurately all the significant factors that affect the forced response levels. 13 07 2006 15 08 2006 discs (structures) blades Coriolis force vibrations mechanical stability One of the major problems...
Journal Articles
Article Type: Technical Papers
J. Turbomach. July 2007, 129(3): 495–502.
Published Online: July 25, 2006
... contact interfaces including friction contact interfaces, gaps, and cubic nonlinearities. 24 07 2006 25 07 2006 blades discs (structures) vibrations mechanical contact friction The bladed disk assemblies have many contact interfaces such as at blade–disk joints, at contact...
Journal Articles
Article Type: Technical Papers
J. Turbomach. January 2007, 129(1): 143–150.
Published Online: February 1, 2006
... of the new models and an analysis of the influence of the damper parameters on the forced response of bladed disks is made. 01 10 2005 01 02 2006 blades discs (structures) friction vibration control mechanical contact finite element analysis Due to the high density of...
Journal Articles
Article Type: Technical Papers
J. Turbomach. April 2006, 128(2): 403–410.
Published Online: September 28, 2005
... joints and excitation levels are explored for practical bladed disks. 25 08 2005 28 09 2005 damping mechanical contact blades discs (structures) finite element analysis friction Bladed disks are subjected to high levels of vibration amplitudes excited under service...
Journal Articles
Article Type: Technical Briefs
J. Turbomach. January 2006, 128(1): 206–210.
Published Online: August 1, 2005
... values with good accuracy relative to finite element results, even for a case in which the displacement and stress levels show different frequency response trends. 23 02 2005 01 08 2005 blades vibrations discs (structures) turbines engines reduced order systems finite element...
Journal Articles
Article Type: Technical Papers
J. Turbomach. January 2005, 127(1): 128–136.
Published Online: February 9, 2005
...: A. J. Strazisar. 13 June 2004 01 October 2003 01 March 2004 09 02 2005 vibrations damping finite element analysis discs (structures) nonlinear equations turbines mechanical contact Blade mistuning is inevitable in practical bladed disks and is usually...