Abstract
This paper describes the use of coupled Computational Fluid Dynamics (CFD) and Rigid Body Dynamics (RBD) in modelling the aerodynamic behaviour of wind-borne plate type objects. Unsteady 21) and 3D Reynolds Averaged Navier-Stokes (RAMS) CFD models are used to simulate the unsteady and non-uniform flow field surrounding static, forced rotating, auto-rotating and free-flying plates. The auto-rotation phenomenon itself is strongly influenced by vortex shedding, and the realisable k-epsilon turbulence modelling approach is used, with a second order implicit time advancement scheme and equal or higher order advection schemes for the flow variables. Sequentially coupling the CFD code with a RBD solver allows a more detailed modelling of the Fluid-Structure Interaction (FSI) behaviour of the plate and how this influences plate motion. The results are compared against wind tunnel experiments cm auto-rotating plates and an existing 3D analytical model.
Original language | English |
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Pages (from-to) | 169-189 |
Number of pages | 21 |
Journal | Wind and Structures |
Volume | 13 |
Issue number | 2 |
Publication status | Published - 1 Mar 2010 |
Keywords
- fluid-structure interaction
- autorotation
- windborne debris
- CFD