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Gust buffeting and turbulence uncertainties
- Source :
-
Journal of Wind Engineering & Industrial Aerodynamics . May2002, Vol. 90 Issue 4/5, p441. 19p. - Publication Year :
- 2002
-
Abstract
- Literature on turbulence modeling is rich in empirical, semi-empirical and theoretical spectral equations whose parameters assume deterministic values. Starting from a critical review of the state of the art, a unitary model of the 3-D atmospheric turbulence was proposed where all parameters are defined by first- and second-order statistical moments derived from a wide selection of experimental measurements. Analyses based on Monte Carlo simulation of the model parameters show that the propagation of turbulence uncertainties over the wind-excited response of structures gives rise to a relevant scatter. The passage from Monte Carlo simulations to Taylor series expansions addressed to apply the first-order second-moment technique provides systematic rules to deal with the structural response in a full probabilistic environment. It also allows appreciation of the role of each uncertain parameter. The joint application of this procedure and a closed form solution of the response drastically reduces the computational burden and makes these analyses operatively possible. The proposed approach is a step forward towards the formulation of a unitary probabilistic model of the wind-excited response of structures, comprehensive of model errors, parameter uncertainties and parameter randomness. [Copyright &y& Elsevier]
- Subjects :
- *ATMOSPHERIC turbulence
*BUFFETING (Aerodynamics)
*MONTE Carlo method
Subjects
Details
- Language :
- English
- ISSN :
- 01676105
- Volume :
- 90
- Issue :
- 4/5
- Database :
- Academic Search Index
- Journal :
- Journal of Wind Engineering & Industrial Aerodynamics
- Publication Type :
- Academic Journal
- Accession number :
- 7813122
- Full Text :
- https://doi.org/10.1016/S0167-6105(01)00202-1