Control of Boundary Layer Transition to Turbulence
Supervisor: Dr Pierre Ricco

As wall-bounded turbulent flows exert a high wall friction on solid surfaces, efforts have been directed to the suppression of transitional boundary layer disturbances which are responsible for the flow breakdown to turbulence. The technological impact of such research is vast, because such suppression often results in a delay of transition, and therefore in drag reduction. Extension of the laminar region to achieve drag reduction by active methods has recently gained widespread attention.

The central aim of the proposed project is to apply wall suction/blowing to attenuate the intensity of Klebanoff modes araising in laminar boundary layers due to free-stream turbulence. A reason for the dearth of work in this area is the extreme difficulty in predicting and controlling such flows. The problem will be tackled by a combination of mathematical and numerical techniques

Previous experience / requirements: The suitable candidate shopuld possess a sound knowledge of fundamental and theoretical fluid mechanics, a passion for applied mathematics, and strong numerical programming skills
p.ricco@sheffield.ac.uk
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