... temperature increases the amount of deposits significantly. blades boundary layer turbulence coating techniques computational fluid dynamics cooling discs (structures) fly ash gas turbines Navier-Stokes equations temperature distribution 21 10 2010 03 12 2010 25 07 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...

... tools may supply a preliminary quantitative description of all relevant physical phenomena, those set in a wheel space region. computational fluid dynamics confined flow design engineering discs (structures) drag engines flow simulation friction gas turbines heat transfer rotational...

... 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...

... 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 turbines vortices...

... 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...

... 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...

... and 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...

... where the stiffness perturbation dominates. 20 08 2008 03 09 2008 02 07 2009 aerodynamics blades computational fluid dynamics damping discs (structures) turbomachinery The vast majority of turbomachinery blade mistuning studies have been conducted using only...

... for 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 during...

... to 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...

... Characteristics for Axial Gap Rim Seals in a Close-Spaced Turbine Stage From a Numerical Simulation ,” ASME Paper No. GT2006-90965. 30 03 2007 24 08 2007 22 01 2009 aerospace engines blades cadmium cavitation confined flow cooling discs (structures) flow simulation gas turbines...

... 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 of flutter mitigation strategies...

... 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...

... discs (structures) blades Coriolis force vibrations mechanical stability One of the major problems in turbomachinery bladed disk vibration is related to scatter in the blades’ forced response amplitudes (resulting from variability in blades’ properties) as this might lead to excessive...

... , “ Aeroelastic Design of Turbine Blades-ADTurB II Overview ,” Proceedings 6th European Turbomachinery Conference , Lille, France. 7–11 March, Paper No. AMP-105̱01/62. blades discs (structures) vibrations mechanical contact friction The capabilities of the method proposed to analyze structures...

... 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 natural...

... accurate, fast, and robust predictive tools for the analysis of forced vibration response levels of bladed disks under operating conditions is a problem of major practical importance. damping mechanical contact blades discs (structures) finite element analysis friction 25 08 2005...

... 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 analysis reliability...

... 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 caused by small imperfections...