Characterization of streak development for boundary layer transition caused by isolated and distributed roughness

R Joseph, PP Kumar, SS Diwan - 2022 - researchsquare.com
In this work, we characterize the early stages of transition in a flat-plate boundary layer
caused by two types of surface roughness: distributed roughness (a strip of 24-grit emery) …

Delaying transition induced by a strip of distributed roughness using additional fine grit roughness

R Joseph, PP Kumar, SS Diwan - arXiv preprint arXiv:2302.09797, 2023 - arxiv.org
Distributed roughness occurs on aerodynamic surfaces like wind/gas turbine blades and
aircraft wings causing early boundary layer transition resulting in a reduction of the lift-to …

Effect of Distributed Roughness on Boundary Layer Transition Induced by Free-stream Turbulence

R Joseph, SS Diwan - AIAA AVIATION 2022 Forum, 2022 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2022-3813. vid In this work, we
investigate the boundary layer transition in presence of freestream turbulence (FST) and …