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Keywords: temperature measurement
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Journal Articles
Article Type: Research Papers
J. Turbomach. May 2012, 134(3): 031002.
Published Online: July 14, 2011
... Transfer and Bulk Air Temperature Measurements for a Multipass Internal Cooling Model With Ribs and Bleed ,” ASME J. Turbomach. 0889-504X 10.1115/1.1333090 , 123 , pp. 90 – 96 . Ireland , P. T. , and Jones , T. V. , 2000 , “ Liquid Crystal Measurements of Heat Transfer and Surface...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2011, 133(4): 041022.
Published Online: April 26, 2011
... existing methods of temperature measurement. The measurement inaccuracy due to conduction and radiation errors and calibration drift found in thermocouples is significantly reduced; it can measure both stagnation temperature and pressure, halving the instrumentation costs; it has no wiring or transducer...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2011, 133(3): 031013.
Published Online: November 15, 2010
... behavior. Thus, they provide a nonintrusive means of acquiring full-surface temperature measurements. Once applied over a test surface, they form a coating that can be considered to be geometrically and thermally thin. In the work reported here, a layer of TLC was spray painted over the test vanes, which...
Journal Articles
Article Type: Research Papers
J. Turbomach. April 2011, 133(2): 021019.
Published Online: October 25, 2010
... 2009 25 10 2010 25 10 2010 blades cooling engines flow instability flow separation Mach number pressure measurement pulsatile flow temperature measurement turbulence wakes Modern turbo-engine design has been showing a trend toward highly loaded turbine blades in order...
Journal Articles
Article Type: Research Papers
J. Turbomach. January 2011, 133(1): 011016.
Published Online: September 22, 2010
... temperature measurement vibrations Contemporary gas turbines rely on complex blade-casing rub-in-systems to improve the tip clearance behavior during operation from initial service to maximum lifetime ( 1 2 ). The rather complex endwall flow field region associated with the compression system...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2010, 132(4): 041014.
Published Online: May 6, 2010
... both the magnitude and profile of total pressure and total temperature measurements. Part I of this paper describes the establishment of the required numerical simulation procedures. The computational domains are limited to the first three blade rows for the first multistage fan and the last three...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2008, 130(4): 041010.
Published Online: August 1, 2008
... were considered at blowing ratios B of 0.50 and 1.0 with jet pulsing and wake Strouhal numbers of 0.15, 0.30, and 0.60. Wake timing was varied with respect to the pulsing. Temperature measurements were made using an infrared camera, thermocouples, and constant current (cold wire) anemometry. The local...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2008, 130(4): 041008.
Published Online: July 31, 2008
... 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...
Journal Articles
Article Type: Research Papers
J. Turbomach. April 2008, 130(2): 021015.
Published Online: March 24, 2008
... rakes. Of all these instruments, only the thermocouples have a characteristic frequency lower than blade passing and, thus, temperature measurements from these devices are essentially time-averaged values. Since the focus of these experiments is on the blade, the vane is only instrumented at 50...
Journal Articles
Article Type: Research Papers
J. Turbomach. April 2008, 130(2): 021016.
Published Online: March 24, 2008
... of the temperature measurements (such as for the vane sensors) is ± 0.3 K , and the heat-flux accuracy is given as ± 5 % of reading, as shown for the vane (or ∼ 7500 W ∕ M 2 for the highest loading case on the blade). The focus in Part II has been directed...
Journal Articles
Article Type: Research Papers
J. Turbomach. January 2008, 130(1): 011018.
Published Online: January 28, 2008
... heat transfer temperature sensors temperature measurement gas turbines blades Despite the progress in the field of optical measurement techniques for the determination of heat flux distributions at the surface by various methods, including infrared thermography, liquid crystal methods...
Journal Articles
Article Type: Technical Papers
J. Turbomach. April 2007, 129(2): 232–246.
Published Online: May 31, 2006
... inclined at 35 deg to the surface of a flat plate were considered at blowing ratios of 0.25, 0.5, 1.0, and 1.5 for a variety of pulsing frequencies and duty cycles. Temperature measurements were made using an infrared camera, thermocouples, and cold-wire anemometry. Hot-wire anemometry was used...
Journal Articles
Article Type: Technical Papers
J. Turbomach. April 2005, 127(2): 263–269.
Published Online: May 5, 2005
... temperature distribution temperature measurement vortices flow separation drag The cycle efficiency of a gas turbine can be enhanced through raising its inlet temperature. However, there is a limitation in increasing the inlet temperature due to the material problem. Accordingly, blades subject...
Journal Articles
Article Type: Technical Papers
J. Turbomach. April 2005, 127(2): 278–286.
Published Online: May 5, 2005
... . As such, film-cooling holes can be placed on the pressure side of a turbine blade near the tip region. Because of the pressure-driven flow over the tip, the coolant from these holes sweeps over the tip through the gap clearance thereby providing coolant along the blade tip. cooling temperature...
Journal Articles
Article Type: Technical Papers
J. Turbomach. October 2005, 127(4): 718–725.
Published Online: April 28, 2005
... cooling performance, e.g., manufacturing facilitations. 27 10 2004 28 04 2005 gas turbines orifices (mechanical) cooling temperature measurement thermocouples infrared imaging In state-of-the-art gas turbine cooling schemes film cooling is a well-accepted and widely used...
Journal Articles
Article Type: Technical Papers
J. Turbomach. January 2005, 127(1): 222–229.
Published Online: February 9, 2005
.... 13 June 2004 01 October 2003 01 March 2004 09 02 2005 cooling jets rotational flow flow visualisation gas turbines temperature measurement 1 Experimental model 2 Heating and viewing arrangements 3 Flow visualization setup 4 LDA...
Journal Articles
Article Type: Technical Papers
J. Turbomach. January 2005, 127(1): 183–190.
Published Online: February 9, 2005
... of the pin, but left a small unheated gap between the two bars. This experimental anomaly was circumvented by acquiring only 12 of the thermocouple readings away from the bus bar in two 180 deg oriented measurements to provide the complete boundary condition. Temperature measurements were acquired at 5 deg...
Journal Articles
Article Type: Technical Papers
J. Turbomach. October 2004, 126(4): 570–577.
Published Online: December 29, 2004
... method. The results are successfully compared with measurements performed with single-layered thin film gauges. heat transfer temperature measurement heat measurement turbines resistance thermometers thin film resistors flow measurement stators The design of a blade cooling scheme...
Journal Articles
Article Type: Technical Papers
J. Turbomach. October 2004, 126(4): 551–559.
Published Online: December 29, 2004
... carrying a Kiel probe and a fast response Kulite pressure probe for pressure measurements and a thermocouple probe and a cold wire resistance probe for temperature measurements. The results confirm the observation of energy separation in the wake as found by other researchers. The experimental data...
Journal Articles
Article Type: Technical Papers
J. Turbomach. July 2005, 127(3): 532–544.
Published Online: August 31, 2004
... roughness on heat transfer and pressure loss is determined along with the various interactions among these parameters. 12 12 2003 31 08 2004 heat transfer jets rough surfaces boundary layers infrared imaging temperature measurement First presented at the 2001 International...