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Reference Number EP/I033173/1
Title Control of a swept-wing boundary layer perturbed by free-stream turbulence
Status Completed
Energy Categories ENERGY EFFICIENCY(Transport) 80%;
Research Types Basic and strategic applied research 100%
Science and Technology Fields ENGINEERING AND TECHNOLOGY (Mechanical, Aeronautical and Manufacturing Engineering) 100%
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Dr P (Pierre ) Ricco
No email address given
Mechanical Engineering
University of Sheffield
Award Type Standard
Funding Source EPSRC
Start Date 14 October 2011
End Date 13 April 2013
Duration 18 months
Total Grant Value £99,831
Industrial Sectors Aerospace; Defence and Marine
Region Yorkshire & Humberside
Programme NC : Engineering
Investigators Principal Investigator Dr P (Pierre ) Ricco , Mechanical Engineering, University of Sheffield (100.000%)
  Industrial Collaborator Project Contact , Universita La Sapienza di Roma, Italy (0.000%)
Web Site
Abstract Wall suction has been used extensively to reduce the growth of laminar boundary layer disturbances, such as Tollmien-Schlichting waves, cross-flow vortices and, more recently, Klebanoff modes, namely unsteady streamwise-elongated low-frequency disturbances generated by free-stream vortical perturbations. Wall suction has resulted in a delay of transition to turbulence with major benefits, such as reduction of viscous drag, noise, and fuel consumption.The central aim of the proposed work is to apply wall suction to attenuate the intensity of Klebanoff modes arising in swept-wing laminar boundary layers due to free-stream turbulence. These flow structures have never been studied over large scale aerodynamic bodies, despite their vast importance in numerous industrial and technological applications, such as the design of aircraft wings and turbine blades. The effects of wall suction have not been investigated for these technologically relevant flows. A reason for the dearth of works is the extreme difficulty in predicting and controlling such flows.The problem will be tackled by a combination of mathematical and numerical techniques. The proposed approach will offer a fast and numerically robust toolkit in line with the long-standing effort of the fluid mechanics community to control pre-transitional flows in an efficient manner
Publications (none)
Final Report (none)
Added to Database 28/11/11