... cooling engines heat conduction nozzles pressure measurement radiation stagnation flow temperature measurement thermocouples transducers valves Precise and reliable instruments for stagnation temperature and pressure measurements in the most hostile sections of the turbine are needed...

... in the seal region. 07 02 2010 22 02 2010 07 12 2010 07 12 2010 flow simulation gas turbines pressure measurement rotors seals (stoppers) stators velocity measurement In gas turbine stages, the ingestion of mainstream gas into rotor-stator disk cavities...

... and R , respectively). friction heat transfer plates (structures) pressure measurement thermocouples The gas turbine industry continually seeks to increase the operating temperature of the engine in order to achieve higher efficiency. Cooling gas turbine vanes and blades to prevent...

... cylindrical or fan-shaped holes. The measurements comprise adiabatic film cooling effectiveness and profile static pressure measurements. The surface temperature was acquired with thermochromatic liquid crystals and using a hue to temperature correlation. The results shown are for variations in main flow Mach...

... 18 06 2007 03 07 2007 07 09 2010 07 09 2010 gas turbines heat exchangers heat measurement heat transfer pressure measurement One feature common to all modern gas turbine engines is that the main gas path temperatures are hotter than the melting point of various...

... fluid dynamics distortion fans Navier-Stokes equations numerical analysis pressure measurement temperature measurement The fan and compressor of a modern aircraft engine are seldom run in a uniform inlet flow field after entering service. Ever since the early days of aircraft engine...

... measurements to the existing database. The cascade was tested at design incidence and at an inlet Reynolds number of 126,000 based on inlet midspan velocity and axial chord. Quantitative results include seven-hole pneumatic probe pressure measurements downstream of the cascade to assess blade row losses...

.... Experiments were undertaken on the stator suction surface; these included hotwire boundary-layer traverses, surface hotfilm measurements, and high resolution leading-edge pressure measurements. Steady computational fluid dynamics (CFD) predictions were also performed to aid the interpretation of the results...

... , W. S. , 1997 –2005, IMAGEJ , U.S. National Institutes of Health , Bethesda Maryland, http://rsb.info.nih.gov/ij Holley , B. M. , and Langston , L. S. , 2006 , “ Surface Shear Stress and Pressure Measurements in a Turbine Cascade ,” ASME Paper No. GT2006-90580. Holley...

... orifices (mechanical) pressure measurement seals (stoppers) wakes In the state-of-the-art aircraft and electric power generation gas turbine engines, the high-pressure turbine disks are purged with coolant air through the wheel space. This air reduces the thermal load of the disk and prevents...

... coolant ejection. ( b ) SS coolant ejection. 05 07 2007 27 07 2007 10 11 2008 blades coolants cooling gas turbines Mach number pressure measurement subsonic flow testing vortices wakes The ability of today’s gas turbine engines to withstand increasingly higher...

... of periodicity as observed by over-the-rotor dynamic pressure measurements when the compressor is operating far away from stall Figures 1 2 show pressure time traces obtained on the Georgia Tech axial compressor research rig. The trace corresponding to the compressor operation in a safe regime...

...Matthias Schleer; Seung Jin Song; Reza S. Abhari This report intends to shed an insight into the effect of large relative tip clearances on the onset of instability in a highly loaded centrifugal compressor. Time-resolved pressure measurements have been performed along the casing of a scaled-up...

... pressure measurements are available on the vane at midspan, and on the blade at 50% and 90% spans as well as the rotor shroud. In addition, temperature and pressure measurements obtained inside the coolant cavities of both the vanes and blades are presented. Time-averaged values for the surface pressure...

... and pressure data, temperature and pressure data from inside the coolant plenums of the vane and rotating blade airfoils are presented. Pressure measurements obtained inside the vane and blade plenum chambers illustrate passing of the wakes and shocks as a result of vane/blade interaction. Part II...

.... The set of gauzes and honeycomb inserts in the tunnel made the flow uniform before delivering it into the cascade test section through the inlet duct (7). boundary layer turbulence laminar to turbulent transitions gas turbines blades laser Doppler anemometry pressure measurement wakes bubbles...

... for predicting cascade stagnation-line heat transfer using only surface pressure calculations. Midspan static pressure measurements for Airfoils 2 and 3, and potential flow solution The relations used in this study to assess the airfoil leading edge measurements and calculations of skin friction...

... static pressure measurements were taken between the rotors and downstream of the fan to determine the stall behavior. Pressure ratio, mass flow, and efficiency on speed lines from 90% to 102% of the design speed are presented and discussed along with comparison to computational fluid dynamics predictions...

... is perfect nor are the pressure measurements. Although a detailed discussion of these and other imperfections and influences is beyond the scope of this paper, it is a fact that flow conditions around the probe tip, measurement uncertainties, and errors, etc., can and do lead to contamination...

...-53889. Manuscript received by IGTI, October 1, 2003; final revision, March 1, 2004. IGTI Review Chair: A. J. Strazisar. 13 June 2004 01 October 2003 01 March 2004 09 02 2005 heat transfer temperature distribution pressure measurement temperature measurement turbulent...