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Modelling turbulent skin-friction control using linearized Navier-Stokes equations

Contribution of aviation to CO2 emissions is set to rise to 15% by 2030. Therefore, reducing turbulent drag on aircraft is of high importance. This paper gives the first evidence that the magnitude of the turbulent drag reduction by in-plane wall oscillations can be estimated using linearized Navier-Stokes equations. This result is profound, since turbulence is nonlinear. It opens a possibility of developing new methods of turbulent drag reduction. This result is one of the products of a long term effort which was recognized by an invitation to the Newton Institute Programme (the talk:

http://www.newton.ac.uk/programmes/HRT/seminars/2008090814001.html) and a keynote presentation (http://www.southampton.ac.uk/engineering/research/groups/afm/ipc_65.page).