proceedings-49-00150.pdf (1.83 MB)
Comparing the aerodynamic behaviour of real footballs to a smooth sphere using tomographic PIV
conference contribution
posted on 2020-06-16, 10:15 authored by Matthew Ward, Martin Passmore, Adrian SpencerAdrian Spencer, Andy HarlandAndy Harland, Henry Hanson, Tim LucasMany studies have investigated the forces acting on a football in flight and how these
change with the introduction or modification of surface features; however, these rarely give insight
into the underlying fluid mechanics causing these changes. In this paper, force balance and
tomographic particle image velocimetry (PIV) measurements were taken on a smooth sphere and a
real Telstar18 football at a range of airspeeds. This was done under both static and spinning
conditions utilizing a lower support through the vertical axis of the ball. It was found that the
presence of the seams and texturing on the real ball were enough to cause a change from a reverse
Magnus effect on the smooth ball to a conventional Magnus on the real ball in some conditions. The
tomographic PIV data showed the traditional horseshoe-shaped wake structure behind the sphere
and how this changed with the type of Magnus effect. It was found that the positioning of these
vortices compared well with the measured side forces.
Funding
Engineering and Physical Sciences Research Council
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
- Mechanical, Electrical and Manufacturing Engineering
Department
- Aeronautical and Automotive Engineering
Published in
ProceedingsVolume
49Issue
1Pages
150Source
13th conference of the International Sports Engineering Association (ISEA 2020)Publisher
MDPIVersion
- VoR (Version of Record)
Rights holder
© The authorsPublisher statement
This is an Open Access Article. It is published by MDPI under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/Publication date
2020-06-15Copyright date
2020ISSN
2504-3900Publisher version
Language
- en
Editor(s)
Motomu Nakashima, Takeo Maruyama and Yusuke MiyazakiLocation
OnlineEvent dates
22nd June 2020 - 26th June 2020Depositor
Mr Matthew Ward Deposit date: 15 June 2020Article number
150Usage metrics
Categories
No categories selectedKeywords
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC