... the rib-roughened wall are obtained by means of infrared thermography and finite element analysis. The impact of the conduction through the wall on the thermal performance is demonstrated by comparison with purely convective results, previously published by the authors on the same configuration...

... finite element analysis Monte Carlo methods reduced order systems rotors statistical distributions vibrations Substituting Eq. 3 into Eq. 1 and premultiplying by Φ H , the reduced order model is obtained as follows: 5 M r y ̈ + K r y = 0 where 6 M r...

...Zixiang Sun; John W. Chew; Nicholas J. Hills; Leo Lewis; Christophe Mabilat Use of computational fluid dynamics (CFD) to model the complex, 3D disk cavity flow and heat transfer in conjunction with an industrial finite element analysis (FEA) of turbine disk thermomechanical response during a full...

... 2011 28 02 2011 aerodynamics confined flow coolants cooling finite element analysis gas turbines heat transfer nozzles painting probes thermal conductivity Film cooling with cylindrical or fan-shaped hole geometries in turbine components is one of the main cooling...

... 10 2009 26 10 2010 26 10 2010 convection finite element analysis flow simulation rough surfaces thermal conductivity While most turbine blades are highly polished when they enter service, the increase in roughness for land-base, aviation, and marine turbine blades...

... analysis, and finite element analysis (FEA) for the thermostructural analysis. Computational three-dimensional models were developed using two commercial codes, including all elements of the real bucket to avoid geometric simplifications. An interface was developed to transfer the three-dimensional...

... compared with experimental measurements. 09 03 2009 06 05 2009 29 04 2010 29 04 2010 cooling effusion engines finite element analysis flow measurement liquid crystals Mach number Navier-Stokes equations plates (structures) polymers stainless steel turbines turbulence...

...Zixiang Sun; John W. Chew; Nicholas J. Hills; Konstantin N. Volkov; Christopher J. Barnes An efficient finite element analysis/computational fluid dynamics (FEA/CFD) thermal coupling technique has been developed and demonstrated. The thermal coupling is achieved by an iterative procedure between...

... the mechanical stresses to a maximum value. The stresses are calculated by means of a finite element analysis, and controlled by modifying the blade camber, lean, and thickness at the hub. The results show that it is possible to obtain a significant reduction of the centrifugal stresses in the blades without...

... for the aerothermal optimization described in a second paper. The CHT method uses three separate solvers: a Navier–Stokes solver to predict the nonadiabatic external flow and heat flux, a finite element analysis (FEA) to compute the heat conduction and stress within the solid, and a 1D aerothermal model based...

.... All these approaches can be generally classified into two categories: inverse design methods and direct design methods. aerodynamics blades design engineering finite element analysis optimisation turbomachinery 31 08 2008 07 10 2008 13 01 2010 13 01 2010 2010...

.... , 2001 , “ Precision Crowning of Blade Attachments in Gas Turbines ,” U.S. Patent No. 6,244,822B1 (also, in 2003, U.K. Patent No. GB 2,345,943B). Beisheim , J. R. , and Sinclair , G. B. , 2003 , “ On the Three-Dimensional Finite Element Analysis of Dovetail Attachments ,” ASME J...

... j ( ξ s i = 0.5 ) , ϕ j ( ξ s i = 0.5 ) , ω j ( ξ i = − 0.5 ) , and ϕ j ( ξ i = − 0.5 ) are computed via solid modeling with UNIGRAPHICS and via finite element analysis with ANSYS...

.... The second is the modeling of a blade root. turbines blades finite element analysis mechanical contact bending 19 09 2005 06 02 2006 2006 American Society of Mechanical Engineers ...

... 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...

... by application of the modal synthesis method. 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 conditions by aerodynamics...

...-order modeling techniques have been developed. However, for mistuned bladed disks, increases in blade amplitude levels do not always correlate well with increases in blade stress levels. The stress levels may be computed by postprocessing the reduced-order model results with finite element analysis...

... abatement damping modal analysis acoustic field combustion finite element analysis transfer functions acoustic pulses flames acoustic intensity acoustic wave velocity In gas turbines operating with lean premix flames, the suppression of acoustic pulsations is an important...

... 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...

... of centrifugal compressors, to determine the structure’s vibration behavior so that it can be properly accounted for operation under resonance conditions. flow instability compressors computational fluid dynamics blades Fourier transforms finite element analysis engines impellers design...