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- Separated and Reattached Flows
Separated and Reattached Flows
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An experimental program was designed to study thesalient features of separated and reattached flows inpressure gradients generated in asymmetric divergingand converging channels. Reference measurements werealso made in a parallel-wall channel to facilitatethe interpretation of the pressure gradient flows. Atransverse square rib located at the start ofconvergence/divergence was used to create separationinside the channels. In order to simplify theinterpretation of the relatively complex separatedand reattached flows in the asymmetric converging anddiverging channels, measurements were made in theplain converging and diverging channel without therib on the channel wall. All the measurements wereobtained using a high resolution particle imagevelocimetry technique. From these measurements, meanvelocity, Reynolds stresses and higher orderturbulent quantities including terms in the transportequation of the turbulent kinetic energy werereported. The structure of flow was furtherinvestigated using a proper orthogonal technique.
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