Techno Press
Techno Press

Wind and Structures   Volume 15, Number 3, May 2012, pages 247-261
DOI: http://dx.doi.org/10.12989/was.2012.15.3.247
 
Numerical investigations on the turbulence driven responses of a plate in the subcritical frequency range
S. De Rosa, F. Franco, and D. Gaudino

 
Abstract     [Full Text]
    Some numerical investigations are presented concerning the response of a given plate under turbulence driven excitations. Three different input loads are simulated according to the wall pressure distributions derived from the models proposed by Corcos, Efimtsov and Chase, respectively. Modal solutions (finite element based) are used for building the modal stochastic responses in the sub-critical aerodynamic frequency range. The parametric investigations concern two different values of the structural damping and three values of the boundary layer thickness. A final comparison with available experimental data is also discussed. The results demonstrate that the selection of the adequate TBL input model is still the most critical step in order to get a good prediction.
 
Key Words
    turbulent boundary layer; stochastic plate response; wall pressure distribution
 
Address
S. De Rosa, F. Franco, and D. Gaudino : Laboratory for promoting experiences in aeronautical structures and acoustics, Department of Aerospace Engineering, Universita degli Studi di Napoli
 

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