Liviu Librescu Memorial Lecture

Wednesday, April 22, 2009
4:00 - 5:00 PM
Holden 190 (Auditorium)

Dr. Earl H. Dowell
Duke University, Durham, NC

An overview of limit cycle oscillations (LCO) that occur due to the aeroelastic response of high performance aircraft will be presented. Both theoretical/computational and experimental work including wind tunnel and flight tests will be discussed. Emphasis will be on (1) computational/experimental correlation and (2) recent developments in constructing rapid solution methods for computational models that retain state of the art high fidelity accuracy in the models. Results for a modern high performance fighter aircraft demonstrate the sensitivity of flutter (Hopf bifurcation) and LCO prediction to modest changes in key system parameters.

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