Research project: Ab initio hydrodynamic rough surface characterisation with applications
Turbulent flow over rough surfaces is common in nature and in many technological applications, yet the methods used to predict it are based on a limited experimental database and on correlations that are known to give contradictory predictions. There is still much to learn about how particular surface features lead to certain drag increases and it is widely accepted that the standard measure of equivalent sand grain roughness is no longer sufficient, since surfaces with the same roughness on this scale have different behaviour in the traditionally rough flow regime.