The results are presented of an experimental study on the flow and heat transfer in a two-dimensional parallel duct in the presence of a recirculating zone. The formation process of recirculating flow changes at about a/L0.6 (a =L-s, L: a half width of duct, s: nozzle width), depending on whether Karman vortex is shed or not. An experimental correlation has been obtained which makes it possible to calculate the local heat transfer variation in all the flow regions downstream of the maximum heat transfer position for various a/L. Some consideration on the maximum heat transfer mechanism is made in connection with the behavior of recirculating flow.
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JSME international journal. Ser. A, Mechanics and material engineering
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