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Keywords: pressure measurement
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Journal Articles
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2011, 133(4): 041022.
Published Online: April 26, 2011
... 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...
Journal Articles
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2011, 133(3): 031023.
Published Online: December 7, 2010
... at r = 187 mm in configurations 2 and 3. The circumferential locations of pressure taps at the outer shroud and the stator rim seal can be found in Ref. 7 . The uncertainty in the pressure measurements, estimated based on instrument and data acquisition uncertainties, is ± 2...
Journal Articles
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2011, 133(3): 031019.
Published Online: November 18, 2010
... this. friction heat transfer plates (structures) pressure measurement thermocouples 28 09 2009 09 11 2009 18 11 2010 18 11 2010 Han , J. C. , 1988 , “ Heat Transfer and Friction Characteristics in Rectangular Channel With Rib Turbulators ,” ASME J. Heat Transfer...
Journal Articles
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2011, 133(2): 021019.
Published Online: October 25, 2010
... 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...
Journal Articles
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. January 2011, 133(1): 011001.
Published Online: September 7, 2010
.... gas turbines heat exchangers heat measurement heat transfer pressure measurement 18 06 2007 03 07 2007 07 09 2010 07 09 2010 The authors would like to acknowledge Pratt & Whitney for supporting this research. The authors also thank Seth Lawson and Mike...
Journal Articles
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2010, 132(4): 041014.
Published Online: May 6, 2010
... aerospace engines aerospace propulsion blades computational fluid dynamics distortion fans Navier-Stokes equations numerical analysis pressure measurement temperature measurement Current design methodology and modeling techniques for distortion in the aviation and engine industry...
Journal Articles
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. January 2010, 132(1): 011013.
Published Online: September 17, 2009
... 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...
Journal Articles
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2009, 131(4): 041013.
Published Online: July 6, 2009
.... 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...
Journal Articles
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2009, 131(3): 031014.
Published Online: April 10, 2009
.... Measurements of pressures on the same passage surfaces are also presented, resulting in a complete picture of endwall and airfoil surface pressure and shear. 08 05 2008 22 07 2008 10 04 2009 interferometry Mach number pressure measurement shear strength turbines turbulence...
Journal Articles
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2009, 131(2): 021005.
Published Online: January 22, 2009
... is greater for the close-spaced half stages compared to the wide-spaced half stages. The large differences in the unsteady pressure fields on vanes and blades between close-spaced and wide-spaced half stages are consistent with the unsteady surface pressure measurements on vanes and blades, previously...
Journal Articles
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. January 2009, 131(1): 011019.
Published Online: November 10, 2008
... that, for a given blowing ratio, the lowest effectiveness occurs at phase 0% for the pressure surface and at phase 25% for the suction surface. 05 07 2007 27 07 2007 10 11 2008 blades coolants cooling gas turbines Mach number pressure measurement subsonic flow testing vortices...
Journal Articles
D. Christensen, P. Cantin, D. Gutz, P. N. Szucs, A. R. Wadia, J. Armor, M. Dhingra, Y. Neumeier, J. V. R. Prasad
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2008, 130(3): 031011.
Published Online: May 2, 2008
... 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...
Journal Articles
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2008, 130(3): 031002.
Published Online: April 1, 2008
...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...
Journal Articles
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2008, 130(2): 021015.
Published Online: March 24, 2008
... 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...
Journal Articles
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2008, 130(2): 021016.
Published Online: March 24, 2008
... 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...
Journal Articles
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2008, 130(2): 021009.
Published Online: February 29, 2008
... 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 loading is often expressed in the form of a Zweifel...
Journal Articles
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2008, 130(2): 021001.
Published Online: February 12, 2008
... for predicting cascade stagnation-line heat transfer using only surface pressure calculations. aerodynamics boundary layers computational fluid dynamics flow simulation friction gas turbines laminar flow pressure measurement stagnation flow thermal resistance For example, consider the turbine...
Journal Articles
Jack L. Kerrebrock, Alan H. Epstein, Ali A. Merchant, Gerald R. Guenette, David Parker, Jean-Francois Onnee, Fritz Neumayer, John J. Adamczyk, Aamir Shabbir
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2008, 130(2): 021004.
Published Online: February 12, 2008
... 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...
Journal Articles
Accelerating the Calibration of Multihole Pressure Probes by Applying Advanced Computational Methods
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. July 2005, 127(3): 425–430.
Published Online: July 8, 2005
... 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...
Journal Articles
Journal:
Journal of Turbomachinery
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. January 2005, 127(1): 183–190.
Published Online: February 9, 2005
.... heat transfer temperature distribution pressure measurement temperature measurement turbulent diffusion pipe flow The production of turbulence in pin arrays is known to be responsible for enhancing heat transfer rates on pins and endwalls. Simoneau and Van Fossen 8 acquired turbulence...
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