... of thermocouples make them the most used sensors and in real engine environments, almost the only sensor used. Precise and reliable instruments for stagnation temperature and pressure measurements in the most hostile sections of the turbine are needed to improve engine designs for the active control...

... 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...

... this. friction heat transfer plates (structures) pressure measurement thermocouples 28 09 2009 09 11 2009 18 11 2010 18 11 2010 2011 American Society of Mechanical Engineers ...

... 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...

... that the staggered array Reynolds number exponent is about 0.6, but the inline array Reynolds number exponent is about 0.7. 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...

... 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 installations, the effects...

... 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...

.... Measurements of pressures on the same passage surfaces are also presented, resulting in a complete picture of endwall and airfoil surface pressure and shear. The airfoil pressure measurements are new. The intent is to provide a set of measurements representing more spanwise locations than in the 1977 study...

... 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...

... by the elevated film-cooling effectiveness, particularly at higher blowing ratios. 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...

... significantly from one cycle to another. Illustration of periodicity as observed by over-the-rotor dynamic pressure measurements when the compressor is operating far away from stall Illustration of loss of periodicity when the compressor is operating close to stall The developed method...

...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...

... gas turbines blades laser Doppler anemometry pressure measurement wakes bubbles flow separation vortices fluid oscillations Today, there is a trend to increase the lift coefficients of low-pressure (LP) turbine blades. This is to achieve engine weight and cost reductions. The blade...

... for predicting cascade stagnation-line heat transfer using only surface pressure calculations. 30 05 2007 26 06 2007 12 02 2008 aerodynamics boundary layers computational fluid dynamics flow simulation friction gas turbines laminar flow pressure measurement stagnation flow...

... 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...

... 2005 flow measurement calibration probes pressure measurement Miniature multihole pneumatic pressure probes have many advantages over other techniques for making two-dimensional (2D) or three-dimensional (3D) flow field measurements in turbomachinery. For example, pressure probes...

...-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...