NDLI: Flow and Heat Transfer in a Triple-Impingement Configuration for Trailing-Edge Cooling

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Liu, J. Weaver, A. Shih, T. I. -P Klinger, J. Heneveld, B. Ames, R. Dennis, R. A.
Copyright Year	2012
Abstract	The trailing-edge region of turbine airfoils is difficult to cool. In this study, CFD conjugate analysis based on the shear-stress transport (SST) turbulence model is used to study the flow and heat transfer in a triple-impingement cooling configuration. Parameters studied include the pressure drop across the configuration (1, 2, 3, 4, and 5 bars), and the heat transfer coefficient on the hot-gas side (2,000, 4,000, and 6,000 W/m2-K). In all cases with conjugate analysis, the temperature of the coolant at the inlet of the cooling passage is 673 K, the external hot-gas temperature is 1,755 K, and the static pressure at the exit of cooling passage is 25 bars. Simulations were also performed in which the temperature of the cooling-passage wall is kept constant at 1,173 K. Results are generated to show the nature of the flow induced by the triple impingement and how that flow affects heat transfer to the turbine material.
Sponsorship	International Gas Turbine Institute
Starting Page	1791
Ending Page	1798
Page Count	8
File Format	PDF
ISBN	9780791844700
DOI	10.1115/GT2012-70075
Volume Number	Volume 4: Heat Transfer, Parts A and B
Conference Proceedings	ASME Turbo Expo 2012: Turbine Technical Conference and Exposition
Language	English
Publisher Date	2012-06-11
Publisher Place	Copenhagen, Denmark
Access Restriction	Subscribed
Subject Keyword	Temperature Turbulence Cooling Computational fluid dynamics Airfoils Flow (dynamics) Pressure Simulation Pressure drop Shear stress Coolants Engineering simulation Heat transfer coefficients Heat transfer Turbines
Content Type	Text
Resource Type	Article

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