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1 International Journal of Applied Mechanics and Engineering

1 2008

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Aeroelastic computation using the beddoes-leishman dynamic stall model

Dumitrescu H., Frunzulica F.

International Journal of Applied Mechanics and Engineering

2008

Vol. 13, no 1

63-73

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 CFO computations, which are much more time consuming. Computations using a NavierStokes solver are compared to the present results.