...Gottfried Laschet 21 01 2008 28 01 2008 28 02 2011 28 02 2011 cooling heat treatment numerical analysis plates (structures) transpiration velocity measurement In Figs. 7 8 of the published article the velocity profiles, induced by a negative unit pressure...

... velocity measurement In gas turbine stages, the ingestion of mainstream gas into rotor-stator disk cavities and the concurrent egress of cavity gas into the main gas path are caused by the prevailing unsteady, three-dimensional flow field. To reduce the ingestion, a clearance or rim seal...

... Clearance Effects Caused by Shaft Failure , Rolls-Royce plc, Technical Report No. ED-5/M0087/02-DW. 26 07 2009 13 08 2009 26 10 2010 26 10 2010 blades compressors failure (mechanical) finite difference methods friction shafts turbines velocity measurement...

... are normalized with local streamwise velocity measured at the maximum n / c value shown for each profile. For example at s / c = − 0.125 , profiles are normalized with respect to U ¯ s b ∣ n / c = 0.03 . When this station is located outside of the IGV-wake...

... and potentially open the design envelope. aerodynamics aerospace components blades flow visualisation pressure measurement turbines velocity measurement 2010 American Society of Mechanical Engineers ...

... solver, CEDRE . 06 08 2008 09 02 2009 16 09 2009 aerodynamics finite volume methods flow measurement flow visualisation jets Navier-Stokes equations velocity measurement State-of-the-art gas turbine engines are designed to operate at turbine inlet temperatures over...

... the windage power loss from spur gears ( 3 4 ) and a spiral bevel gear ( 5 ). aerospace engines gears lubricating oils torque measurement velocity measurement vortices 2009 American Society of Mechanical Engineers ...

... between VGJ actuation and the wake passing was optimized. Both steady state C p and phase-locked velocity measurements confirm that the optimal combination of wakes and jets yields the smallest separation. At each location and nondimensional time, 100 images were taken, processed, and averaged. Vector...

... considered at blowing ratios of 0.25, 0.50, and 1.0 with a steady freestream and with wake Strouhal numbers of 0.15, 0.30, and 0.60. Temperature measurements were made using an infrared camera, thermocouples, and constant current (cold-wire) anemometry. Hot-wire anemometry was used for velocity measurements...

... for velocity measurements. The local film-cooling effectiveness was calculated based on the measured temperatures, and the results were compared to baseline cases with continuous blowing. Phase-locked flow temperature fields were determined from cold-wire surveys. Pulsing at high frequencies helped to improve...

...Tarek Meakhail; Seung O. Park This paper reports velocity measurement data in the interaction region between the impeller and vaned diffuser and the results of numerical flow simulation of the whole machine (impeller, vaned diffuser and volute) of a single stage centrifugal fan. Two-dimensional...

... Definition of coordinates and dimensions 01 10 2004 01 02 2005 cooling flow instability wind tunnels coolants velocity measurement blades turbines test facilities film cooling flow structure density ratio blowing ratio PIV The main interest...

... = 4 mm slot width). A large part of the uncertainty in a quantity determined by averaging a set of samples, such as the time mean velocity measured by an LDA, can be caused by the fact that only a limited number of samples are used to calculate the average. Uncertainties in the mean velocity...

... computational fluid dynamics shock waves rotational flow pressure measurement velocity measurement boundary layers Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF TURBOMACHINERY . Paper presented...

...D. G. Holmberg; T. E. Diller The gas turbine engine combustor generates turbulence that increases heat transfer on downstream turbine blades, but the mechanisms of that heat transfer are not fully understood. In this work, simultaneous time-resolved surface heat flux and velocity measurements have...

... were mainly emphasized on the heat transfer outcome without complementary flow dynamic investigations. The reason is partly that measuring fluid flow in a rotating coolant duct is a challenging. computational fluid dynamics velocity measurement pipe flow laser velocimetry Doppler...

... thermal performance than attached ribs for a rotating duct. heat transfer pressure measurement pipe flow rotational flow velocity measurement flow measurement temperature measurement friction jets convection shear turbulence 2003 ASME ...

.... gas turbines flow instability flow visualisation wakes engines velocity measurement shear flow 03 June 2002 14 December 2001 07 11 2002 Contributed by the International Gas Turbine Institute and presented at the International Gas Turbine and Aeroengine Congress...

... due to showerhead injection. Measurement of these thermal and velocity fields gives insight into how the showerhead blowing affects downstream film cooling performance. gas turbines heat transfer cooling film flow flow visualisation velocity measurement turbulence jets 03 June...

... 2001 07 11 2002 gas turbines wakes rotational flow vortices velocity measurement shear turbulence flow instability The unsteady flow field around and in the wakes of the rotor and stator blades embedded within a multi-stage turbomachine is dominated by the interaction...