Wind and Structures

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Computation of unsteady wind loading on bluff bodies using a discrete vortex method

  • Taylor, I.J. (Department of Aerospace Engineering, University of Glasgow) ;
  • Vezza, M. (Department of Aerospace Engineering, University of Glasgow)
  • Published : 1999.12.25
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Abstract

A discrete vortex method (DVM) has been developed at the Department of Aerospace Engineering, University of Glasgow, to predict unsteady, incompressible, separated flows around closed bodies. The basis of the method is the discretisation of the vorticity field, rather than the velocity field, into a series of vortex particles that are free to move in the flow. This paper gives a brief description of the method and presents the results of calculations on static and transversely oscillating square section cylinders. The results demonstrate that the method successfully predicts the character of the flow field at different angles of incidence for the static case. Vortex lock-in around the resonance point is successfully captured in the oscillatory cases. It is concluded that the vortex method results show good agreement, both qualitatively and quantitatively, with results from various experimental data.

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References

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