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.
CITATION STYLE
Mottaghian, P., Yuan, J., & Piomelli, U. (2018). Boundary layer separation under strong adverse pressure gradient over smooth and rough walls. ERCOFTAC Series, 24, 173–179. https://doi.org/10.1007/978-3-319-63212-4_21
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