go to top scroll for more

Projects

Projects: Projects for Investigator
Reference Number EP/I016090/1
Title Control of boundary layer streaks induced by free-stream turbulence using a novel velocity-pressure control framework.
Status Completed
Energy Categories Renewable Energy Sources(Wind Energy) 5%;
Energy Efficiency(Transport) 20%;
Not Energy Related 70%;
Other Power and Storage Technologies(Electric power conversion) 5%;
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 JF Whidborne
No email address given
School of Engineering
Cranfield University
Award Type Standard
Funding Source EPSRC
Start Date 01 February 2011
End Date 31 January 2014
Duration 36 months
Total Grant Value £30,066
Industrial Sectors No relevance to Underpinning Sectors
Region East of England
Programme Materials, Mechanical and Medical Engineering
 
Investigators Principal Investigator Dr JF Whidborne , School of Engineering, Cranfield University (100.000%)
Web Site
Objectives Linked to grant EP/I016015/1
Abstract In this proposal we aim to develop a new framework for active control of spatially developing flows and apply it to stabilise the streaky structures developing in incompressible and compressible boundary layers in the presence of high free-stream turbulence. This flow scenario is very common over aircraft wings and turbine blades. To the best of our knowledge, this is the first time that active control of such flows is attempted worldwide. The current approach, which is based on the wall-normal velocity and vorticity formulation to derive a state-space system suitable for controller design, has several limitations. The new control framework will use instead the primitive variables, velocity and pressure. This formulation offers greater flexibility and, most importantly, makes the incorporation of the effect of free-stream turbulence straightforward. This choice of variables however introduces new challenges from the control perspective because the standard optimal control algorithms can not be applied. In the attached case of support, the limitations of the current approach are explained, the benefits of the new formulation are highlighted and the challenges that must be dealt with for the successful control of streaks are analysed. This work offers a unique opportunity to put the UK in a leading position in the new and rapidly developing area of active flow control
Data

No related datasets

Projects

No related projects

Publications

No related publications

Added to Database 06/12/10