CFD modelling of free-flight and auto-rotation of plate type debris
B. Kakimpa,D.M. Hargreaves,J.S. Owen,P. Martinez-Vazquez,C.J. Baker,M. Sterling,A.D. Quinn
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 2D and 3D Reynolds Averaged Navier-Stokes (RANS) 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 on auto-rotating plates and an existing 3D analytical model.
B. Kakimpa; Department of Civil Engineering, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
D.M. Hargreaves; Department of Civil Engineering, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
J.S. Owen; Department of Civil Engineering, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
P. Martinez-Vazquez; School of Civil Engineering, The University of Birmingham,Edgbaston, Birmingham, B15 2TT, UK
C.J. Baker; School of Civil Engineering, The University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
M. Sterling; School of Civil Engineering, The University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
A.D. Quinn; School of Civil Engineering, The University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
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