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THMT-15. Proceedings of the Eighth International Symposium On Turbulence Heat and Mass Transfer
September, 15-18, 2015, Sarajevo, Bosnia and Herzegovina

DOI: 10.1615/ICHMT.2015.THMT-15


ISBN Print: 978-1-56700-427-4

ISBN CD: 978-1-56700-428-8

Effects of interval of spanwise-modulated local forcing on mechanisms of flow separation control

pages 719-722
DOI: 10.1615/ICHMT.2015.THMT-15.1600
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ABSTRACT

We investigate the effects of the spanwise-modulation interval of local forcing on the mechanisms of flow separation control around a two-dimensional hump. It is shown that a spanwise modulation of λy = 0:08 maximally increases the three-dimensional velocity fluctuations and leads to reattachment. Static local-forcing is assumed to promote the lift-up effects of the bypass transition of the streaks. Perturbation growth might be dependent on the spanwise interval of the forcing.

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