Abstract
Large eddy simulations of separated turbulent boundary layers over a flat plate were performed to study the effects of wall roughness. Rough-wall cases have a larger separation bubble with both earlier separation and later reattachment. Roughness leads to early flow reversal upstream of the real separation.
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Acknowledgements
Support from Hydro Québec, the Natural Science and Engineering Research Council of Canada (NSERC), and the High Performance Computing Virtual Laboratory (HPCVL), Queen’s University site, is gratefully acknowledged.
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Mottaghian, P., Yuan, J., Piomelli, U. (2018). Boundary Layer Separation Under Strong Adverse Pressure Gradient over Smooth and Rough Walls. In: Grigoriadis, D., Geurts, B., Kuerten, H., Fröhlich, J., Armenio, V. (eds) Direct and Large-Eddy Simulation X. ERCOFTAC Series, vol 24. Springer, Cham. https://doi.org/10.1007/978-3-319-63212-4_21
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DOI: https://doi.org/10.1007/978-3-319-63212-4_21
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