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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/5085

Title: Hybrid finite-volume-ROM approach to non-linear aerospace fluid-structure interaction modelling
Authors: Mowat, AGB
Malan, AG
Van Zyl, LH
Meyer, JP
Keywords: ALE
Finite volume
FSI
ROMs
Transonic
Non-linear structure
Issue Date: Jun-2011
Citation: Mowat, AGB, Malan, AG, Van Zyl, LH, et al. 2011. Hybrid finite-volume-ROM approach to non-linear aerospace fluid-structure interaction modelling. International Forum on Aeroelasticity and Structural Dynamics (IFASD), Paris, France, 26-30 June 2011, pp. 16
Series/Report no.: Workflow;6752
Abstract: A fully-coupled partitioned fluid-structure interaction (FSI) scheme is developed for sub- and transonic aeroelastic structures undergoing non-linear displacements. The Euler equations, written in an Arbitrary Lagrangian Eulerian (ALE) coordinate frame, describe the fluid domain while the structure is represented by a quadratic modal reduced order model (ROM). A Runge-Kutta dual-timestepping method is employed for the fluid solver, and three upwind schemes are considered viz. AUSM+ -up, HLLC and Roe schemes. The HLLC implementation is found to offer the superior balance between efficiency and robustness. The developed FSI technology is applied to modelling nonlinear flutter, and the quadratic ROM demonstrated to offer dramatic improvements in accuracy over the more conventional linear method.
Description: International Forum on Aeroelasticity and Structural Dynamics (IFASD), Paris, France, 26-30 June 2011
URI: http://hdl.handle.net/10204/5085
Appears in Collections:Aeronautic systems
Advanced mathematical modelling and simulation
General science, engineering & technology

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