Effects of Hot Streaks on Adiabatic Effectiveness for a Film Cooled Turbine Vane

Autor:	David G. Bogard, Krishnakumar Varadarajan
Rok vydání:	2004
Předmět:	Gas turbines Materials science Suction Thermal Streak Combustor Mechanics Adiabatic process Turbine Simulation
Zdroj:	Volume 3: Turbo Expo 2004.
DOI:	10.1115/gt2004-54016
Popis:	Turbine guide vanes in gas turbine engines are typically subjected to localized “hot streaks” emanating from the combustor. This experimental program examined how these hot streaks affect the film cooling performance for these vanes. Adiabatic effectiveness tests were conducted on the showerhead and suction side regions of the vane. Particular attention was placed on how to scale that adiabatic effectiveness data obtained with a hot streak to correctly predict the adiabatic effectiveness. Thermal field measurements were made to determine the temperature gradients for the hot streak near the wall. These experiments showed that the effect of the hot streak on the adiabatic effectiveness could be accounted for by using an “adjusted” mainstream temperature equal to the hot streak temperature at the wall of the vane.Copyright © 2004 by ASME
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c8d559f68fa40bc1bc58553973de6f85 https://doi.org/10.1115/gt2004-54016 Zobrazit plný text záznamu