... transfer calculations were performed to determine the temperature distribution and heat transfer coefficient in the region close to the film cooling hole and in the regions further downstream of a row of film cooling holes. Computational and experimental results were compared to understand the effect...

... suction surface, but small changes are observed for the pressure surface. In addition to the cooling study, a novel method of calculating the adiabatic wall temperature is demonstrated. The derived adiabatic wall temperature distribution shows very similar trends to the Stanton number distribution...

...Sean C. Jenkins; Igor V. Shevchuk; Jens von Wolfersdorf; Bernhard Weigand Measurements of transient fluid temperature distributions were made in a high aspect ratio (4:1) internally ribbed two-pass channel relating to the measurement of heat transfer using the transient thermochromic liquid crystal...

... aerodynamics cavitation channel flow finite volume methods heat transfer jets Navier-Stokes equations temperature distribution State-of-the-art gas turbine engines are designed to operate at turbine inlet temperatures over 1850 K. Since modern alloys can withstand temperatures up to about 1350 K...

... measurement jets liquid crystals temperature distribution turbulence film cooling converging slot-hole thermal performance exit-entry area ratio transient measurement The desire for higher overall efficiency and higher specific thrust in air, land, and sea gas turbines renders the need...

... ) was either 0 rpm or 800 rpm; the film cooling blowing ratios ranged from 0.4 to 2.0, and two averaged density ratios of 1.02 and 1.53 were employed with air and carbon dioxide ( CO 2 ) as the coolant, respectively. Thermochromic liquid crystal was used to measure the solid surface temperature distributions...

... distributions due to coolant injection and measured temperature distributions of hot streaks. These predictions were compared to the measured hot streak reduction to determine the accuracy of the superposition technique. Results showed that the superposition predictions generally underpredicted the reduction...

... Isentropic Light Piston Turbine Test Facility, is presented. 12 09 2007 23 07 2008 09 04 2009 aerodynamics blades combustion combustion equipment heat exchangers life testing mechanical testing reliability temperature distribution turbines Turbine inlet temperature...

... 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...

.... 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 05 05 2005 cooling boundary layers turbines temperature distribution The performance...

... in terms of the parameters X = h cl S cl / h g S g and w + = m cl c p , cl / h g S g H where H is the blade length. He succeeded in obtaining full analytical solutions for the temperature distributions T b y...

... that the influence of the clocking at the outlet is focused on the temperature distribution. Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF TURBOMACHINERY . Paper presented at the International Gas Turbine...

... revision, March 1, 2004. IGTI Review Chair: A. J. Strazisar. 13 June 2004 01 December 2003 01 March 2004 09 02 2005 heat transfer liquid crystals gas turbines boundary layers flow measurement temperature distribution The demand for gas turbines with improved...

...-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...

...Abd Rahim Abu Talib; Andrew J. Neely; Peter T. Ireland; Andrew J. Mullender This paper presents a novel experimental technique, which combines thermochromic liquid crystals with multiple steps in gas temperature, to determine heat transfer coefficient and adiabatic wall temperature distributions...

... Review Chair: A. J. Strazisar. 13 June 2004 01 October 2003 01 March 2004 29 12 2004 heat transfer infrared imaging temperature distribution jets turbines “Film cooling is the introduction of secondary fluid (coolant) at one or more discrete locations along...

... 26 03 2004 nozzles turbulent diffusion temperature distribution gas turbines film flow cooling boundary layer turbulence Nonuniform temperature profiles, or “hot streaks” exiting the combustor in a gas turbine engine play a large role in failures of the first stage nozzle guide...

... different concavity array densities were tested using tube bulk flow Reynolds numbers from 20,000 to 90,000. Liquid-crystal thermography was used to measure the temperature distributions on the outside of the concavity tubes. Using the average heat transfer coefficient for the fully developed region...

...Torsten Eggert; Bjoern Schenk; Helmut Pucher Optical pyrometers provide many advantages over intrusive measuring techniques in determining the spatial and time varying temperature distribution of fast rotating components in gas turbines. This paper describes the development and evaluation...

... 5 to 8.6 × 10 5 , and the nondimensional secondary air flow rate, c w , ranged from 1504 to 7520. The secondary air was supplied at the cavity hub. All experiments were carried out at the same mainstream air flow rate, Re m = 5.0 × 10 5 . The cavity fluid temperature distribution was measured...