25th Congress of International Council of the Aeronautical Sciences, 3 - 8 September 2006, Hamburg, Germany
Paper ICAS 2006-5.1.3


AEROELASTIC SIMULATION OF S-DUCT DYNAMICS USING STRUCTURE-COUPLED CFD

J. Smith, M. Dalenbring
Swedish Defence Research Agency (FOI), Sweden

Keywords: Fluid-Structure-Interaction, Aeroelastic, CFD, UAV, S-duct

Results are presented for computational aeroelastic simulation of a low-observable, S-duct air intake channel, obtained using the, FOI-developed, CFD flow-solver, "Edge" and FE structural analysis code, "Stripe". It is demonstrated that the internal flow can become dynamically coupled to the structural resulting in a limit cycle oscillation (LCO).


view full paper