This paper presents the transient aero-thermal analysis of a gas turbine internal air system through an engine flight cycle featuring multiple fluid cavities that surround a HP turbine disk and the adjacent structures. Strongly coupled fluid-structure thermal interaction problems require significant computational effort to resolve nonlinearities on the interface for each time step. Simulation times may grow impractical if multiple fluid domains are included in the analysis. A new strategy is employed to decrease the cost of coupled aero-thermal analysis. Significantly lower fluid domain solver invocation counts are demonstrated as opposed to the traditional coupling approach formulated on the estimates of heat transfer coefficient. Numerical results are presented using 2D FE conduction model combined with 2D flow calculation in five separate cavities interconnected through the inlet and outlet boundaries. The coupled solutions are discussed and validated against a nominal stand-alone model. Relative performance of both coupling techniques is evaluated.
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ASME Turbo Expo 2012: Turbine Technical Conference and Exposition
June 11–15, 2012
Copenhagen, Denmark
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-4470-0
PROCEEDINGS PAPER
Coupled Fluid-Structure Transient Thermal Analysis of a Gas Turbine Internal Air System With Multiple Cavities
Vlad Ganine,
Vlad Ganine
University of Surrey, Guildford, Surrey, UK
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Umesh Javiya,
Umesh Javiya
University of Surrey, Guildford, Surrey, UK
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Nick Hills,
Nick Hills
University of Surrey, Guildford, Surrey, UK
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John Chew
John Chew
University of Surrey, Guildford, Surrey, UK
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Vlad Ganine
University of Surrey, Guildford, Surrey, UK
Umesh Javiya
University of Surrey, Guildford, Surrey, UK
Nick Hills
University of Surrey, Guildford, Surrey, UK
John Chew
University of Surrey, Guildford, Surrey, UK
Paper No:
GT2012-68989, pp. 2167-2177; 11 pages
Published Online:
July 9, 2013
Citation
Ganine, V, Javiya, U, Hills, N, & Chew, J. "Coupled Fluid-Structure Transient Thermal Analysis of a Gas Turbine Internal Air System With Multiple Cavities." Proceedings of the ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. Volume 4: Heat Transfer, Parts A and B. Copenhagen, Denmark. June 11–15, 2012. pp. 2167-2177. ASME. https://doi.org/10.1115/GT2012-68989
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