... 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...

... flux and this introduces uncertainty. Tip Stanton number comparison between CFD and experiment 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...

... Navier–Stokes equations supplemented with κ - ω -SST turbulence model. Of special interest herein is the flow physics resulting from optimization, revealing the intricate connections to the remarkable reduction in flow distortion and total pressure losses at the engine face. It is discovered...

..., a detailed description of the redesign procedure is provided, and the aerodynamic characteristics of the optimized geometry are discussed and compared with the original ones. 16 06 2009 23 08 2010 15 07 2011 15 07 2011 mechanical engineering computing Navier-Stokes equations...

... , A. , and Béghein , C. , 2007 , “ A Class of Subgrid-Scale Models Preserving the Symmetry Group of Navier–Stokes Equations ,” Commun. Nonlinear Sci. Numer. Simul. 1007-5704 , 12 , pp. 243 – 253 . 10.1016/j.cnsns.2005.02.006 Spalart , P. R. , Jou , W. , Strelets , M. , and Allmaras , S...

.../1.39947 02 07 2010 30 07 2010 07 07 2011 07 07 2011 compressors flow simulation Navier-Stokes equations turbines turbomachinery The industrial application of LES and hybrid RANS-LES is increasing. However, the more robust general solvers through which...

... and 0.10. The computations were performed by solving the Reynolds-averaged Navier–Stokes equations (Reynolds-averaged Navier–Stokes method) with the commercial finite-volume solver FLUENT using a low-Re shear stress transport (SST) k- ω turbulence model. The numerical grids were block-structured hexahedral...

... for the treatment of pressure momentum coupling: CFX ® uses a coupled algorithm while the OPENFOAM ® C++ library implements finite volume discretization aimed at solving pressure and momentum in segregated ways. The compressible Navier–Stokes equations are solved using a semi-implicit method for pressure...

... 10 2010 21 04 2011 21 04 2011 compressible flow compressors confined flow Navier-Stokes equations rotating stall surge fan speed stall hysteresis stall inception stall recovery Recipient of the IGTI Technical Committee Best Paper Award for 2010. Rotating...

...Xinqian Zheng; Yangjun Zhang; Weidong Xing; Junyue Zhang Flow separation control was investigated on a compressor cascade using three types of fluidic-based excitations: steady suction, steady blowing, and synthetic jet. By solving unsteady Reynolds–averaged Navier–Stokes equations, the effect...

... 07 2010 20 04 2011 20 04 2011 compressible flow computational fluid dynamics Navier-Stokes equations turbomachinery Fan, compressor, and turbine blades operate in annuli, which, in the majority of cases, are delimited by nonparallel end walls. The three-dimensional (3D...

... for predicting transition in a separation bubble may need to include a shear stress transport (SST) model such as the one developed by Menter ( 36 ). The low Reynolds number k − ω turbulence model combined with the thin layer Navier–Stokes equations used in this study may be limited...

... on the rotor performance. The CFD code employed in this work is HYDRA ( 16 ). HYDRA solves the compressible Reynolds averaged Navier–Stokes equations on unstructured grids using a finite volume method. A second order spatial discretization is used with an explicit four-stage Runge–Kutta scheme...

... aerodynamics cavitation channel flow finite volume methods heat transfer jets Navier-Stokes equations temperature distribution State-of-the-art gas turbine engines are designed to operate at turbine inlet temperatures over 1850 K. Since modern alloys can withstand temperatures up to about 1350 K...

.... Jameson , A. , Pierce , N. A. , and Martinelli , L. , 1997 , “ Optimum Aerodynamic Design Using the Navier-Stokes Equations ,” Proceedings of the AIAA 35th Aerospace Sciences Meeting and Exhibit , Reno, NV. Reuther , J. , Jameson , A. , Farmer , J. , Martinelli , L...

... regions, up to 15% higher. The results for the endwall heat transfer were compared with results in open literature and were found to be comparable. 27 08 2009 22 05 2010 15 11 2010 15 11 2010 blades flow instability flow simulation gas turbines heat transfer Navier-Stokes...

... 03 09 2009 27 10 2010 27 10 2010 aerodynamics blades compressors flow simulation Navier-Stokes equations transonic flow vortices wind tunnels An improvement of the compressor efficiency is directly linked with the influencing of secondary flow effects in blade...

..., the configurations were investigated numerically by solving the Reynolds-averaged Navier–Stokes equations using the finite-volume solver FLUENT . The numerical grids were generated by the hybrid grid generator CENTAUR . Three different turbulence models were considered: the realizable k - ε model with two-layer wall...

... ) presented a chorochronic based method, which considers the nonlinear behavior of the wakes by “damping out” nonperiodic flow phenomena. The method was partly validated against a frequency domain linearized Navier–Stokes equations solver method ( 10 ) showing good agreement. A different approach, which does...

... losses were determined in separate experiments by local static pressure measurements. Furthermore, a computational study was performed solving the Reynolds-averaged Navier–Stokes equations using the commercial finite-volume solver FLUENT . The numerical grids were generated using the hybrid grid...