Abstract
Large-Eddy Simulations (LES) are used to investigate the physical processes involved in the injection of a synthetic (zero-net-flux) jet into a zero-pressure-gradient turbulent boundary layer at conditions corresponding to experimental data obtained by others. The boundary layer ahead of the jet is generated by a separate precursor simulation at a momentum-thickness Reynolds number of Re θ=920, providing the main simulation with a full and accurate description of the unsteady conditions. Phase-averaged results and time-averaged integral quantities are presented and compared against experimental data. This main study is preceded by a simulation of a synthetic-jet injected into stagnant surroundings, mainly in order to verify the computational framework, but also to gain insight into the behaviour of the vortex rings injected through a square orifice, in accord with corresponding experimental conditions.
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Wu, D.K.L., Leschziner, M.A. (2008). Large-Eddy Simulations of Synthetic Jets in Stagnant Surroundings and Turbulent Cross-Flow. In: Morrison, J.F., Birch, D.M., Lavoie, P. (eds) IUTAM Symposium on Flow Control and MEMS. IUTAM Bookseries, vol 7. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-6858-4_14
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DOI: https://doi.org/10.1007/978-1-4020-6858-4_14
Publisher Name: Springer, Dordrecht
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