Using Eulerlets: a new description of Euler flow for manoeuvring bodies

Event


Date:

Time: 6:00pm

Please Note: Refreshments will be available from 5.30pm; the AGM will begin at 5.45pm and be followed by the talk at 6.00pm.

Frank Adams Room 1, Alan Turing Building

University of Manchester, Manchester, M13 9PL, UK

Organiser: Margaret Eastwood

Organiser Email: margareteastwoodimanw@gmail.com

Monday April 30, 2018 6:00pm Monday April 30, 2018 6:00pm Europe/London Using Eulerlets: a new description of Euler flow for manoeuvring bodies Frank Adams Room 1, Alan Turing BuildingUniversity of ManchesterManchesterM13 9PLUK Using Eulerlets: a new description of Euler flow for manoeuvring bodies, a talk by Edmund Chadwick (University of Salford) Annual General Meeting of the IMA North West Branch and Invited Lecture Abstract Consider a manoeuvring […] Refreshments will be available from 5.30pm; the AGM will begin at 5.45pm and be followed by the talk at 6.00pm. Event Link: https://ima.org.uk/7958/using-eulerlets-new-description-euler-flow-manoeuvring-bodies/ Margaret Eastwood margareteastwoodimanw@gmail.com

Using Eulerlets: a new description of Euler flow for manoeuvring bodies


Using Eulerlets: a new description of Euler flow for manoeuvring bodies, a talk by Edmund Chadwick (University of Salford)

Annual General Meeting of the IMA North West Branch and Invited Lecture

Abstract

Consider a manoeuvring body in a fluid such as a plane, submarine, ship, fish, or bird.  Consider sufficient high Reynolds number that Euler flow is a good approximation.  Unfortunately, traditional Euler flow models have significant theoretical drawbacks, in particular D’Alembert’s paradox and non-uniqueness.  We introduce a new Euler model that overcomes these deficiencies thereby making it more amenable to modelling next generation flapping and swimming unmanned, robotic air and sea vehicles.

The new model overcomes existing theoretical drawbacks by considering Euler flow as a near-field flow, and matching asymptotically to a far-field viscous Oseen flow.

Then, D’Alembert’s paradox is resolved, insight into the Kutta condition related to uniqueness is provided, and a new Euler wake flow, called the slip Euler wake is obtained.

The theory is partially verified against uniform flow past a circular cylinder and compared against experiment, and a new set of experimental tests is proposed for an aerofoil, which would provide a definitive test, but not performed.

5.30 ‐ 5.45 pm Light Refreshments
5.45 ‐ 6.00 pm Annual General Meeting
6.00 ‐ 7.00 pm Invited Lecture

No charge is made to attend meetings; non-IMA members are welcome.

Download the event poster, AGM and Invited Lecture by E. Chadwick, 30Apr18 (pdf)
Image: speaker’s own
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