The wind tunnel is driven by a powerful double-inlet centrifugal fan. Air is blown down the test section, enters the ambient space, and is then recycled. In detail, air flows from the fan through a coarse-flow straightener, a wide-angle diffuser with screens, a fine straightener, a settling chamber with screens, then a contraction, the working section, and finally the outlet diffuser.
The working section is 1.8 m wide, 0.9 m high, and 16 m long. Several methods of air-speed control are available, providing high speeds for turbulent boundary-layer studies and very low speeds for experiments on flow over plants. The contraction ratio is 5.5:1, similar to that of a general purpose tunnel.
Photographer : David McClenaghan
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<table style="border:1px solid;padding:2px; width:310px;" ><tr><td><a href="https://www.scienceimage.csiro.au/image/3742/"><img src="https://www.scienceimage.csiro.au/images/embed/300_0_AS3889.jpg" width="300" alt="Pye Laboratory Wind Tunnel" style="margin: 0 0 5px 0; border: 0px;"></a><br/><a href="https://www.scienceimage.csiro.au/image/3742/">Pye Laboratory Wind Tunnel</a><br />by CSIRO</td></tr></table>
Pye Laboratory Wind Tunnel