The separated flow region in the wake of five structural elements (I-beam, T-beam, L-beam, flat plate and circular cylinder) has been investigated in a low-turbulence wind tunnel. Measurements have been made of the vortex shedding characteristics of these elements as a function of the angle of attack. Details of the drag and base-pressure coefficients are also presented for the I- and L-beams. The results are in agreement with existing codes of practice but also indicate the existence of two dominant shedding regimes for the I-, L-, and T-beams. The rapid change in the Strouhal number between these two regimes suggests that unclad structures may show significant forcing energies in widely separated frequency bands when a small change occurs in the angle of attack of the wind. © 1981.
|Number of pages||8|
|Journal||Journal of Wind Engineering and Industrial Aerodynamics|
|Publication status||Published - Jul 1981|