Simpósio com o Prof. Joseba Murua - Universtity of Surrey - acontece no dia 26 de setembro de 2014, sexta-feira, às 10:00 na Divisão de Engenharia Aeronáutica - Sala 1405.
Low-order models for nonlinear aeroelasticity and flight dynamics
Future aircraft concepts will most likely consist of light and large-aspect-ratio wings. This minimises weight and maximises aerodynamic efficiency, but it also leads to highly flexible structures, prone to exhibit large displacements during normal operation, unconventional dynamic characteristics, and vulnerability against atmospheric disturbances. Due to the computational costs associated to CFD and full-scale finite element analyses, very little work has been done on high-fidelity modelling and most efforts have focused on 2D aerodynamics, neglecting crucial effects. An intermediate low-order, medium-fidelity approach will be presented, which couples a nonlinear beam model with a threedimensional vortex method, and provides an integrated tool including aero-, structural and flight dynamics. Following the same low-order philosophy, the framework is then extended with flow-separation modelling. The approach will be illustrated through numerical examples: (i) coupled aeroelastic/flight dynamics responses and gust-load alleviation on very flexible platforms; (ii) dynamics of conventional aircraft, including T-tail flutter and realtime flight simulation in post-stall conditions; and (iii) limit-cycle oscillations in vortex-dominated flows.
Prof. Joseba Murua
Joseba Murua graduated in Mechanical Engineering from the University of Navarra, Spain (2005). After a short spell in industry working as structural engineer first and as research aerodynamicist next, he combined both disciplines through MSc (2008) and PhD (2012) studies in aeroelasticity at Imperial College London. During his doctorate he was visiting scholar at the Active Aeroelasticity and Structures Research Lab, University of Michigan (2011). He joined the University of Surrey as Lecturer (Assistant Professor) in Aerospace Engineering in July 2012. His research mainly focuses on computational aeroelasticity and flight dynamics of very flexible aircraft, but he is also interested in experimental fluid-structure interaction as well as small-scale energy harvesting