Aeroelastic computation using the Beddoes – Leishman dynamic stall model
by
Horia Dumitrescu
GHEOGHE MIHOC-CAIUS IACOB Institute of Statistics and Applied Mathematics
Coauthors: Florin FRUNZULICĂ, Alexandru DUMITRACHE

The application of the semi-empirical dynamic stall model by Beddoes and Leishman (B-L) on aeroelastic conditions is described. The approach is to couple the structural model to the nonlinear Beddoes – Leishman model and integrate through time. The nonlinear aerodynamic effects are included in the B-L model and thus, the behavior of the unstable system can be investigated after flutter, has occurred i.e. periodicity (limit cycle oscillations), chaos, etc., can be analyzed. The B-L time integration approach is applied to quickly decide test cases for the unsteady CFD computations, which are much more time consuming. Computations using a Navier – Stokes solver are compared to the present results.

Date received: April 15, 2008