AM05-03-013 角柱列から発生する風切り音に関する流体計算(風工学4,一般講演)

概要

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Wind flows around a row of rectangular cylinders are computed to investigate wind-induced noise from balustrade. Four rectangular cylinders are located in the computational domain. The cylinder's aspect ratio B/D and span-wise length H/D are set as 2. Both span-wise and lateral directions are treated as periodical. Due to adjoining cylinders, the separating shear-layers from the cylinders' windward corners get close to their side surfaces and the vortex shedding frequencies become higher than those from a single cylinder. The shorter distances between cylinders cause the higher peak frequencies and the larger values of pressure fluctuations. Obtained time histories of wind-forces acting on each cylinder are used for reproducing sound pressure and compared with wind-tunnel experiments.
2005-09-05