Coupled Fluid-Structure Transient Thermal Analysis of a Gas Turbine Internal Air System With Multiple Cavities
Ganine, V, Javiya, U, Hills, N and Chew, J (2012) Coupled Fluid-Structure Transient Thermal Analysis of a Gas Turbine Internal Air System With Multiple Cavities JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 134 (10), ARTN 1.
Coupled Fluid-Structure Transient Thermal Analysis of a Gas Turbine Internal Air System with Multiple Cavities J Eng Gas Turb Power 2012.pdf
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This paper presents the transient aerothermal 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 aerothermal 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 finite element 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.
|Divisions :||Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences|
|Date :||1 October 2012|
|Identification Number :||10.1115/1.4007060|
|Uncontrolled Keywords :||Science & Technology, Technology, Engineering, Mechanical, Engineering, ENGINEERING, MECHANICAL, HEAT-TRANSFER, DYNAMICS, STABILITY|
|Related URLs :|
|Additional Information :||© 2012 American Society of Mechanical Engineers.|
|Depositing User :||Symplectic Elements|
|Date Deposited :||25 Aug 2015 16:01|
|Last Modified :||25 Aug 2015 16:01|
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