UK Fluids Conference

Roughing up wings: A promising technique in laminar flow control

UK Fluids Conference, Imperial College London, September 2016

The Californian Aerospace Museum: well worth a visit.

Laminar flow control—the process of influencing the structure of a laminar boundary layer as it moves over a surface—is important in the field of aerodynamics for the purposes of drag reduction and safety: new and more effective techniques are constantly being sought. Thus the work of Huebsch, Rothmayer and others on dynamic roughnesses is exciting. These small, oscillating bumps seem to have the potential for delaying or suppressing the separation of a boundary layer from a surface.

In this talk, I’ll present their numerical and experimental results; as well as our work on dynamic roughnesses in the context of marginal separation.