Assimilating rough features: A data-driven framework to infer rough wall properties from sparse experimental data

Martina Formichetti, Uttam Cadambi Padmanaban, Ping He +2

Surface roughness influences turbulent boundary layers (TBLs) primarily through the roughness function $\hat{I}”U^{+}$ and the equivalent sand-grain roughness height \(k_s\). Direct determ…