... distributions and to show the behavior of heat transfer due to 180 deg bends. Thurman , D. , and Poinsatte , P. , 2001 , “ Experimental Heat Transfer and Bulk Air Temperature Measurements for a Multipass Internal Cooling Model With Ribs and Bleed ,” ASME J. Turbomach. 0889-504X 10.1115...

... 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...

... if this approach were used. Comparison of SS thermocouple and TLC temperature measurements In order to illustrate the accuracy of the liquid crystal technique, comparisons of the temperatures acquired by the TLC and the thermocouples on the SS are presented in Fig. 11 . The TLC experimental...

... temperature measurement turbulence wakes Modern turbo-engine design has been showing a trend toward highly loaded turbine blades in order to face the demand for cost-optimized products. Together with increased loading, the occurrence of separation in regions with strong deceleration of the flow...

... 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...

... 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...

... 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...

... 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...

... experiments by changing the wall temperature, measuring the local heat flux, and extrapolating on the data to the wall temperature at zero heat flux. At a minimum, this usually requires three experiments to achieve. Thus, the same four gauges must function over three different experiments in order to produce...

...). In addition, there are six HFGs mounted in the recess of the squealer tip and 12 HFGs mounted on the rotor shroud (two circumferential locations of six) and six pressure transducers. 13 07 2006 16 07 2006 24 03 2008 aerodynamics temperature measurement pressure measurement heat...

... understanding of the influence of fluctuations in temperature fields. 17 07 2006 25 09 2006 28 01 2008 heat transfer temperature sensors temperature measurement gas turbines blades Despite the progress in the field of optical measurement techniques for the determination...

... 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...

... 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...

... cooling temperature measurement turbines boundary layers rotors Technical advancements in the gas turbine industry require higher turbine rotor inlet temperatures to allow for more efficient operation and engine performance. Inlet temperatures to the rotor...

... Around Diffusion Shaped Holes ,” ASME Paper No. 99-GT-34. 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...

... 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 cooling jets rotational flow flow visualisation gas turbines temperature measurement The leading-edge...

...-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...

... March 2004 29 12 2004 heat transfer temperature measurement heat measurement turbines resistance thermometers thin film resistors flow measurement stators The design of a blade cooling scheme for a turbine stage requires the knowledge of the heat transfer coefficient around...

... 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...

... to the temperatures measured by the embedded thermocouples. The air flow rate is measured using a venturi calibrated to ± 0.5 % reading located in the air supply system as described by El-Gabry ( 14 ). The tests were run at a pressure ratio of about 1.17 that is close to the operating conditions...