Mowat, AGBMalan, AGVan Zyl, Louwrens HMeyer, JP2011-07-072011-07-072011-06Mowat, AGB, Malan, AG, Van Zyl, L.H, 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. 16http://hdl.handle.net/10204/5085International Forum on Aeroelasticity and Structural Dynamics (IFASD), Paris, France, 26-30 June 2011A 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.enALEFinite volumeFSIROMsTransonicNon-linear structureConference PresentationMowat, A., Malan, A., Van Zyl, L. H., & Meyer, J. (2011). Hybrid finite-volume-ROM approach to non-linear aerospace fluid-structure interaction modelling. http://hdl.handle.net/10204/5085Mowat, AGB, AG Malan, Louwrens H Van Zyl, and JP Meyer. "Hybrid finite-volume-ROM approach to non-linear aerospace fluid-structure interaction modelling." (2011): http://hdl.handle.net/10204/5085Mowat A, Malan A, Van Zyl LH, Meyer J, Hybrid finite-volume-ROM approach to non-linear aerospace fluid-structure interaction modelling; 2011. http://hdl.handle.net/10204/5085 .TY - Conference Presentation AU - Mowat, AGB AU - Malan, AG AU - Van Zyl, Louwrens H AU - Meyer, JP AB - 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. DA - 2011-06 DB - ResearchSpace DP - CSIR KW - ALE KW - Finite volume KW - FSI KW - ROMs KW - Transonic KW - Non-linear structure LK - https://researchspace.csir.co.za PY - 2011 T1 - Hybrid finite-volume-ROM approach to non-linear aerospace fluid-structure interaction modelling TI - Hybrid finite-volume-ROM approach to non-linear aerospace fluid-structure interaction modelling UR - http://hdl.handle.net/10204/5085 ER -