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Reference Number EP/G061556/1
Title Investigation of alternative drag-reduction strategies in turbulent boundary layers by using wall forcing
Status Completed
Energy Categories ENERGY EFFICIENCY(Transport) 75%;
NOT ENERGY RELATED 25%;
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 Professor M Leschziner
No email address given
Aeronautics
Imperial College London
Award Type Standard
Funding Source EPSRC
Start Date 01 September 2009
End Date 28 February 2013
Duration 42 months
Total Grant Value £342,188
Industrial Sectors Aerospace; Defence and Marine; Transport Systems and Vehicles
Region London
Programme NC : Engineering
 
Investigators Principal Investigator Professor M Leschziner , Aeronautics, Imperial College London (99.999%)
  Other Investigator Professor SI Chernyshenko , Aeronautics, Imperial College London (0.001%)
  Industrial Collaborator Project Contact , Airbus UK Ltd (0.000%)
Web Site
Objectives Linked to grant EP/G060215/1
Abstract The aim of this research is to investigate, in an interactive programme involving several mutually supportive computational approaches and paradigms, the feasibility of achieving sustained and economically worthwhile frictional-drag reduction at flight Reynolds numbers using cross-flow wall forcing. While the emphasis of the programme is on the fundamental turbulence physics and the prediction of its interaction with wall drag, in general, the programme is closely associated with an importantcivil aviation goal, namely the reduction in emissions per passenger km by 50% by 2020. The programme will combine studies involving direct numerical simulations and highly-resolved large eddy simulations with two approaches based on linearised streak modelling, one developed by Chernyshenko (Imperial College) and the other by Lockerby (Warwick). The general strategy is to use the full-resolution schemes to gain insight into the near-wall turbulence mechanisms associated with frictionaldrag, to generate calibration-related input into the linearised streak modelling and to investigate the validity of this modelling for a range of actuation parameters examined with the full-resolution approaches. The proposed research is fundamental in nature and complements well EPSRC's Active Aircraft programme, which is practically-oriented. The ultimate objective is to derive a prediction procedure, based on linearised streak modelling that allows the effect of different configurations of cross-flow wall forcing on drag at flight Reynolds numbers to be quantified. The programme is financially supported by EADS
Publications (none)
Final Report (none)
Added to Database 02/09/09