Pourya Forooghi, Aarhus University, Denmark

Title: Predicting the drag penalty on an arbitrary rough surface

Abstract: Surface roughness causes an increase in skin friction drag coefficient when exposed to turbulent flows. At a given Reynolds number, this drag penalty is determined by the roughness geometry. The ability to predict the drag coefficient ‘a priori’, i.e., only based on a knowledge of the roughness geometry, is highly desirable since the alternative is conducting a separate experiment for every ‘new’ roughness. The seminar will present some new insights into the problem with focus on irregular roughness occurring in real-world applications.

Bio: Pourya Forooghi is an Associate Professor at Aarhus University (AU) in Denmark. He completed his PhD at the University of Queensland, Australia, in 2014 and subsequently worked as a researcher at the Institute of Fluid Mechanics-Karlsruhe Institute of Technology (KIT), Germany, until 2020, when he joined AU. Pourya is a Villum Young Investigator in the period 2023-2028. Over the past few years, Pourya's research has focused on wall-bounded turbulence - particularly over rough walls - using direct numerical simulation as the primary tool. His current research is centered on flow phenomena in water electrolyzers for green hydrogen production.