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A Frequency Domain Analysis Of Surface Heat Transfer Free Stream Turbulence Interactions In A Transonic Turbine Cascade
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Book Synopsis A Frequency Domain Analysis of Surface Heat Transfer/free-stream Turbulence Interactions in a Transonic Turbine Cascade by : David G. Holmberg
Download or read book A Frequency Domain Analysis of Surface Heat Transfer/free-stream Turbulence Interactions in a Transonic Turbine Cascade written by David G. Holmberg and published by . This book was released on 1996 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Frequency Domain Analysis of Surface Heat Transfer/Free-Stream Turbulence Interactions in a Transonic Turbine Cascade by : David G. Holmberg
Download or read book A Frequency Domain Analysis of Surface Heat Transfer/Free-Stream Turbulence Interactions in a Transonic Turbine Cascade written by David G. Holmberg and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The relationship of time resolved surface heat flux to the turbulent free stream flow over a turbine blade is investigated. Measurements are made in a transonic linear cascade with a modern high pressure turbine blade profile. Time resolved direct heat transfer measurements are made with Heat Flux Microsensor (HFM) inserts along the pressure side, and with one HFM directly deposited on the suction surface near the leading edge. Simultaneous velocity measurements are made above the heat flux sensors using miniature hot wire probes. Grids are used to produce two turbulence fields of constant inlet turbulence intensity, Tu=5%, but significantly different integral length scales (Ax). Results are compared with a low free stream turbulence baseline condition. Special emphasis is given to frequency domain analysis of the data via coherence function magnitude and phase, energy spectra, and time auto and cross correlations.
Download or read book ASME Technical Papers written by and published by . This book was released on 1998 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Endwall Heat Transfer Measurements in a Transonic Turbine Cascade by :
Download or read book Endwall Heat Transfer Measurements in a Transonic Turbine Cascade written by and published by . This book was released on 1996 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbine blade endwall heat transfer measurements are given for a range of Reynolds and Mach numbers. Data were obtained for Reynolds numbers based on inlet conditions of 0.5 and 1.0 x 10(exp 6), for isentropic exit Mach numbers of 1.0 and 1.3, and for freestream turbulence intensities of 0.25% and 7.0%. Tests were conducted in a linear cascade at the NASA Lewis Transonic Turbine Blade Cascade Facility. The test article was a turbine rotor with 136 deg of turning and an axial chord of 12.7 cm. The large scale allowed for very detailed measurements of both flow field and surface phenomena. The intent of the work is to provide benchmark quality data for CFD code and model verification. The flow field in the cascade is highly three-dimensional as a result of thick boundary layers at the test section inlet. Endwall heat transfer data were obtained using a steady-state liquid crystal technique.
Download or read book Paper written by and published by . This book was released on 1998 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Winter Annual Meeting by : American Society of Mechanical Engineers
Download or read book Winter Annual Meeting written by American Society of Mechanical Engineers and published by . This book was released on 1997 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the ASME Turbo Expo ... by :
Download or read book Proceedings of the ASME Turbo Expo ... written by and published by . This book was released on 2003 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of High Intensity, Large-Scale Freestream Combustor Turbulence on Heat Transfer in Transonic Turbine Blades by :
Download or read book Effects of High Intensity, Large-Scale Freestream Combustor Turbulence on Heat Transfer in Transonic Turbine Blades written by and published by . This book was released on 2003 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: The influence of freestream turbulence representative of the flow downstream of a modem gas turbine combustor and the first stage vane on turbine blade heat transfer has been measured and analytically modeled in a linear, transonic turbine cascade. Measurements were performed on a high turning, transonic turbine blade. The facility is capable of heated flow with inlet total temperature of 120 degrees C and inlet total pressure of 10 psig. The Reynolds number based on blade chord and exit conditions (5x10(exp 6)) and the inlet and exit Mach numbers (0.4 and 1.2, respectively) are representative of conditions in a modem gas turbine engine. High intensity, large length-scale freestream turbulence was generated using a passive turbulence-generating grid to simulate the turbulence generated in modem combustors after it has passed through the first stage vane row. The grid produced freestream turbulence with intensity of approximately 10-12% and an integral length scale of 2 cm near the entrance of the cascade passages, which is believed to be representative of the core flow entering a first stage gas turbine rotor blade row. Mean heat transfer results showed an increase in heat transfer coefficient of approximately 8% on the suction surface of the blade, with increases on the pressure surface on the order of two times higher than on the suction surface (approximately 17%). This corresponds to increases in blade surface temperature of 5- 10%, which can significantly reduce the life of a turbine blade. The heat transfer data were compared with correlations from published literature with good agreement.
Book Synopsis Blade Heat Transfer Measurements and Prediction in a Transonic Turbine Cascade by :
Download or read book Blade Heat Transfer Measurements and Prediction in a Transonic Turbine Cascade written by and published by . This book was released on 1999 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the ASME Turbo Expo 2002 by :
Download or read book Proceedings of the ASME Turbo Expo 2002 written by and published by . This book was released on 2002 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Volumes 3A and 3B are part of a five-volume set comprising the proceedings of the June 2002 conference held in the Netherlands. Approximately 125 articles address heat transfer, and manufacturing materials and metallurgy. A sampling of topics: the effect of freestream turbulence on film cooling adiabatic effectiveness; the influence of periodic unsteady inflow conditions on leading edge film cooling; and fluid dynamcis of a pre-swirl rotor-stator system. No subject index. Annotation c. Book News, Inc., Portland, OR (booknews.com).
Book Synopsis The Effects of Inlet Turbulence and Rotor/stator Interactions on the Aerodynamics and Heat Transfer of a Large-scale Rotating Turbine Model, Volume 1 by : Robert P. Dring
Download or read book The Effects of Inlet Turbulence and Rotor/stator Interactions on the Aerodynamics and Heat Transfer of a Large-scale Rotating Turbine Model, Volume 1 written by Robert P. Dring and published by . This book was released on 1987 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1996 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Freestream Turbulence on Turbine Blade Heat Transfer in Transonic Flow by : Loren Patton Johnson
Download or read book Effects of Freestream Turbulence on Turbine Blade Heat Transfer in Transonic Flow written by Loren Patton Johnson and published by . This book was released on 1995 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of the Effects of Wake Passage on Heat Transfer in a Linear Turbine Cascade by :
Download or read book Analysis of the Effects of Wake Passage on Heat Transfer in a Linear Turbine Cascade written by and published by . This book was released on 1993 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study investigated the effect of wake passage On the heat transfer in a linear turbine cascade. The apparatus used was the Air-Force Institute of Technology linear Turbine Cascade Test Facility (TCTF). The TCTF was fitted with a be Pulley system to facilitate a series of translating bars. The bars, when passed d upstream of the cascade, created a series of wakes. The parameters varied were freestream model Reynolds number and bar conditions, i.e., bars in, bars out, and bar passing frequency. One blade in the TCTF was instrumented to allow pressure and temperature measurements at discrete points on the blade's surface. From the pressure and temperature data the convective heat transfer coefficient at these discrete locations was calculated. Results were compared to previous TCTF heat transfer data, empirical solutions, and other wake passage experiments. For all tests with closely spaced bars, the effect of wake passing on the heat transfer of the blade was similar to the effect of grid-generated 10% freestream turbulence on the cascade.
Book Synopsis Effects of Incidence Angle, Freestream Turbulence and Reynolds Number on Heat Transfer in a Linear Turbine Cascade by : S. G. Meschwitz
Download or read book Effects of Incidence Angle, Freestream Turbulence and Reynolds Number on Heat Transfer in a Linear Turbine Cascade written by S. G. Meschwitz and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:
