Abstract
Large-eddy simulations (LES) of oscillating turbulent boundary layers, over a rippled bed, subjected to frame rotation are presented. This flow is archetypal of a bottom-ocean, tidally driven boundary layer developing over sand dunes. A forcing-type immersed boundary method (IBM) is used to represent the solid bed and the filtered structure function model for the sub-grid stresses. Three different rotation patterns were examined, each one corresponding to different geographic latitudes. The effect of ripples was found to significantly modify the elliptical patterns and the phase of the Ekman layers generating between the ripple crests.
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© 2015 Springer International Publishing Switzerland
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Grigoriadis, D.G.E., Armenio, V. (2015). Effects of Rotation on the Oscillatory Flow Over Ripples. In: Fröhlich, J., Kuerten, H., Geurts, B., Armenio, V. (eds) Direct and Large-Eddy Simulation IX. ERCOFTAC Series, vol 20. Springer, Cham. https://doi.org/10.1007/978-3-319-14448-1_59
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DOI: https://doi.org/10.1007/978-3-319-14448-1_59
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