...Haiteng Ma; Wei Zeng; Siming Dai; Hongmei Jiang Film cooling, as a key technology to ensure turbine survival in new generation gas turbines, has been studied profusely in subsonic flows. But in transonic flow, the determination of adiabatic cooling effectiveness faces a dilemma in the state...

... 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...

... yields a normalized Nusselt number that tends to collapse to a single shape, independent of profile or mass flow. 30 06 2010 01 07 2010 15 07 2011 15 07 2011 aerodynamics cooling engines mass transfer transonic flow turbines Cooling plays a critical role...

... of this paper. 30 06 2010 01 07 2010 15 07 2011 15 07 2011 aerodynamics blades cooling design engineering hydraulic turbines mass transfer transonic flow valves The subject of film cooling and the manner in which the aerodynamics are influenced by the injected flow...

... with it a boundary layer developing along the fuselage; the inlet is thus known as boundary-layer-ingesting (BLI) inlet. aerospace components aircraft boundary layer turbulence flow control Navier-Stokes equations transonic flow 06 07 2010 02 08 2010 15 07 2011 15 07 2011...

... 06 2011 28 06 2011 aerodynamics blades boundary layers computational fluid dynamics engines gas turbines nozzles transonic flow wakes The performance of the turbine section in a gas turbine engine plays a major role in the overall efficiency of the engine. They depend...

... a typical single blown-down run. Note that radiation reflection from other objects, surface emissivity variations, and zinc selenide window transmissivity are all rigorously accommodated by the in situ infrared camera calibration process. Transonic flow conditions for the present study Inlet...

... and numerical tests of Chen et al. ( 6 ) on a two-dimensional tip gap in transonic flow showed that for an exit Mach number of 1.0, the peak Mach number in the gap was 1.4. They also showed that when the tip flow speed was increased from subsonic to supersonic flow, the separation bubble at the inlet to the gap...

... of rotation helps pressurize the cavity and is responsible for preventing hot gas from entering the buffer cavity. 11 08 2009 21 11 2009 25 04 2011 25 04 2011 computational fluid dynamics coolants cooling flow simulation rotors stators transonic flow turbines wheels...

...Q. Zhang; D. O. O’Dowd; L. He; A. P. S. Wheeler; P. M. Ligrani; B. C. Y. Cheong In this paper, the transonic flow pattern and its influence on heat transfer on a high-pressure turbine blade tip are investigated using experimental and computational methods. Spatially resolved heat transfer data...

... . Rai , M. M. , and Madavan , N. K. , 1988 , Multi-Airfoil Navier–Stokes Simulations of Turbine Rotor-Stator Interaction , NASA Ames Research Centre , Reno, NV . Erdos , J. I. , Alzner , E. , and McNally , W. , 1977 , “ Numerical Solution of Periodic Transonic Flows...

... 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. flow instability flow simulation rotors transonic flow turbogenerators vortices wakes Transonic...

... engineering Navier-Stokes equations optimisation plastic flow transonic flow turbines Shape design optimization in aerodynamics is an approach to obtain the geometric shape following the given criteria of aerodynamic performance with both geometric and aerodynamic restrictions. There are various...

... 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...

... flow instability rotors transonic flow More and more attentions have been paid on casing treatment since Koch and Smith ( 1 ) found that it could be used to expand the stable operating range of compressor. Investigations on casing treatment are divided into two parts: one is the attempts...

... , “ Multibladerow Forced Response Modeling in Axial-Flow Core Compressors ,” ASME J. Turbomach. 0889-504X , 129 , pp. 412 – 420 . 10.1115/1.2436892 Erdos , J. I. , and Alzner , E. , 1977 , “ Numerical Solution of Periodic Transonic Flow Through a Fan Stage ,” AIAA J. 0001-1452 , 15 , pp...

... 2010 21 10 2010 blades compressors flow instability rotors stagnation flow transonic flow vortices wakes The design of highly loaded, high Mach number (HLHM) compressors (i.e., compressors with supersonic relative Mach numbers in an embedded stage) presents challenges...

... . On both the pressure side and suction side of the blade, the 12% turbulence shows higher augmentation levels than the 14% turbulence. 03 01 2008 29 01 2010 28 09 2010 28 09 2010 blades gas turbines heat transfer Mach number transonic flow turbulence...

... in the order of magnitude of the general measurement error, including facility related effects, such as compressor vibrations or density fluctuations in the transonic flow field. Therefore this small error was considered to be negligible and was thus not corrected for. With closer proximity of the light sheet...

... will be compared for different rotor positions with respect to the stationary slots in order to evaluate the time-dependent interaction between the rotor and the casing treatment. 27 08 2008 16 09 2008 09 09 2010 09 09 2010 blades compressors flow measurement rotors transonic...