Flow Field and Acoustic Study of the Flow in Various Wall-Mounted Porous Fences

Abstract eng:
An extensive experimental characterization of the flow past wall-mounted single- and multi-scale porous fences is presented. Results are shown using hot-wires, PIV, fluctuating wall pressure and a microphone array. There is evidence that both the mechanism of formation of the far field boundary layer and of sound generation depend strongly on the grid geometry. Results will be presented involving wall-flow correlations in order to characterize the distinct influences of the grids’ wake in the near-wall region.

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