Seed Meeting: Towards a Unified Strategy to Control Three-dimensional Bluff Body Wakes

20 scientists from France and the UK met to develop a strategy and proposals for the harnessing of new technologies that are able to exploit recent findings in the behaviour of turbulent wakes, which are generated by the motion of a fluid around large bluff bodies such as road vehicles and tall buildings.


It has recently been shown that wakes are dominated by important large-scale phenomena, which carrying much of the wake energy, are responsible for generating large forces on the associated bodies. These forces appear as drag on, for example, road vehicles, or as large unsteady forces on tall buildings subject to extreme weather events. Potential sources of research funding span a range of sectors addressing environmental challenges such as EU programmes for green transport.

Our specific “Seed Questions” sought to answer the following questions:
o What is a cost-effective method for passive control on rectangular base body?
o What is a cost-effective method for open loop-control on rectangular base body?
o Feedback control in rectangular base body – which approaches show most promise?
o Discussions based on guiding questions such as how to find efficient actuation for stabilization?
o Which is the best algorithm for feedback control?
o Could basic ideas be relevant to other geometries / problems e.g. axisymmetric bodies?

Our agreements comprise:
o Approaches to EPSRC / ANR for independent research programmes
o Explore potential Franco – British collaborations
o Exploit leverage Franco-British collaboration – care
o ERCOFTAC SIG on 3D wakes
o Next meeting of this group?
o AeroVehicles II Gothenburg June 21-23, 2016
o Applied Aerodynamics Lyon March 27-29th, 2017.

Published on 31/05/2016

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