Abstract
This paper describes the impact of the actuator jet angle on the resulting reattachment process. Experimental investigations in a planar half-diffuser using pulsed excitation were carried out. Three different jet angles were employed to explore the forcing mechanisms of the reattachment process. When changing the orientation of the wall jet, the reattachment process was found to be driven by diverse vortex structures. But within this diversity, a common mechanism can be found in the combination of the inward and outward fluid transfer across the shear layer. In order to analyze the temporal response of the separated shear layer to the wall-jet, the starting process of the actuator was investigated.
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Hecklau, M., Salazar, D.P., Nitsche, W. (2013). Influence of the Actuator Jet Angle on the Reattachment Process with Pulsed Excitation. In: Dillmann, A., Heller, G., Kreplin, HP., Nitsche, W., Peltzer, I. (eds) New Results in Numerical and Experimental Fluid Mechanics VIII. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 121. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35680-3_18
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DOI: https://doi.org/10.1007/978-3-642-35680-3_18
Publisher Name: Springer, Berlin, Heidelberg
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Online ISBN: 978-3-642-35680-3
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