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Details of Grant 

EPSRC Reference: EP/W021099/1
Title: Saving energy via drag reduction: a mathematical description of oscillatory flows
Principal Investigator: Eaves, Dr T
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Department: Civil Engineering
Organisation: University of Dundee
Scheme: New Investigator Award
Starts: 15 August 2022 Ends: 14 February 2025 Value (£): 244,373
EPSRC Research Topic Classifications:
Aerodynamics Continuum Mechanics
Non-linear Systems Mathematics
EPSRC Industrial Sector Classifications:
No relevance to Underpinning Sectors
Related Grants:
Panel History:
Panel DatePanel NameOutcome
08 Feb 2022 EPSRC Mathematical Sciences Prioritisation Panel February 2022 Announced
Summary on Grant Application Form
Turbulent fluid flows are ubiquitous in the engineering and industrial sciences, including aviation, shipping and transport, marine renewable energy, race car design, and pipeline transport. Much of the energy put into turbulent fluid systems is used to overcome the skin friction, or viscous turbulent drag force, on the boundaries of the flow, such as a pipe wall during pipeline transport or an aircraft wing in flight. Recent experiments and simulations indicate the potential for a reduction in skin friction of up to 7.5% for aircraft flight and up to 25% in pipeline transport if these flow boundaries are made to oscillate side-to-side transversally to the flow. If such skin friction reductions were realised in aircraft flight, then typical energy savings for one transatlantic flight are equivalent to the daily energy usage of around 1500 UK homes. Although some physical explanations for this drag reduction have been forwarded, to date there is no general underlying mathematical description of the phenomenon. This project will provide such an explanation, by identifying how oscillating walls affect key low-drag structures in the turbulent flow. In doing so, the project will design optimised wall oscillation strategies which best manipulate these low-drag structures in order to provide even greater energy savings. Additionally, the underlying mathematical description will help to relate different industrial applications together under a single framework, in order to facilitate the transfer of key ideas and energy saving solutions between applications.
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Organisation Website: http://www.dundee.ac.uk