dc.contributor.author |
Tank, J.
|
|
dc.contributor.author |
Smith, Lelanie
|
|
dc.contributor.author |
Spedding, G.R.
|
|
dc.date.accessioned |
2017-02-02T10:02:35Z |
|
dc.date.issued |
2017-02 |
|
dc.description.abstract |
The flight of many birds and bats, and their robotic counterparts, occurs over a range of chord-based Reynolds numbers from 1 x 104 to 1.5 x 105. It is precisely over this range where the aerodynamics of simple, rigid, fixed wings becomes extraordinarily sensitive to small changes in geometry and the environment, with two sets of consequences. The first is that practical lifting devices at this scale will likely not be simple, rigid, fixed wings. The second is that it becomes non-trivial to make baseline comparisons for experiment and computation, when either one can be wrong. Here we examine one ostensibly simple case of the NACA 0012 airfoil and make careful comparison between the technical literature, and new experiments and computations. The agreement (or lack thereof) will establish one or more baseline results and some sensitivities around them. The idea is that the diagnostic procedures will help to guide comparisons and predictions in subsequent more complex cases. |
en_ZA |
dc.description.department |
Mechanical and Aeronautical Engineering |
en_ZA |
dc.description.embargo |
2018-02-28 |
|
dc.description.librarian |
hb2017 |
en_ZA |
dc.description.sponsorship |
We are grateful to the Air Force Office of Scientific Research
for equipment funding and partial funding of J.T. during this work
under grants FA9550-15-1-0255 and FA9550-16-1-0392, both under
the management of Doug Smith. L.S.’s work is supported by South
African National Aerospace Center, and by a Research Completion
Grant from the University of Pretoria, South Africa. |
en_ZA |
dc.description.uri |
http://rsfs.royalsocietypublishing.org |
en_ZA |
dc.identifier.citation |
Tank, J, Smith, L & Spedding, GR 2017, 'On the possibility (or lack thereof) of agreement between experiment and computation of flows over wings at moderate Reynolds number', Interface Focus, vol. 7, no. 1, Art# 20160076, pp. 1-15. |
en_ZA |
dc.identifier.issn |
2042-8901 (online) |
|
dc.identifier.other |
10.1098/rsfs.2016.0076 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/58840 |
|
dc.language.iso |
en |
en_ZA |
dc.publisher |
The Royal Society |
en_ZA |
dc.rights |
© 2016 The Author(s) Published by the Royal Society. All rights reserved. |
en_ZA |
dc.subject |
NACA 0012 airfoil |
en_ZA |
dc.subject |
Low Reynolds number |
en_ZA |
dc.subject |
Aerodynamics |
en_ZA |
dc.title |
On the possibility (or lack thereof) of agreement between experiment and computation of flows over wings at moderate Reynolds number |
en_ZA |
dc.type |
Postprint Article |
en_ZA |