Vortex wakes generated by robins Erithacus rubecula during free flight in a wind tunnel
(2006) In Journal of the Royal Society Interface 3(7). p.263-276- Abstract
- The wakes of two individual robins were measured in digital particle image velocimetry (DPIV) experiments conducted in the Lund wind tunnel. Wake measurements were compared with each other, and with previous studies in the same facility. There was no significant individual variation in any of the measured quantities. Qualitatively, the wake structure and its gradual variation with flight speed were exactly as previously measured for the thrush nightingale. A procedure that accounts for the disparate sources of circulation spread over the complex wake structure nevertheless can account for the vertical momentum flux required to support the weight, and an example calculation is given for estimating drag from the components of horizontal... (More)
- The wakes of two individual robins were measured in digital particle image velocimetry (DPIV) experiments conducted in the Lund wind tunnel. Wake measurements were compared with each other, and with previous studies in the same facility. There was no significant individual variation in any of the measured quantities. Qualitatively, the wake structure and its gradual variation with flight speed were exactly as previously measured for the thrush nightingale. A procedure that accounts for the disparate sources of circulation spread over the complex wake structure nevertheless can account for the vertical momentum flux required to support the weight, and an example calculation is given for estimating drag from the components of horizontal momentum flux (whose net value is zero). The measured circulations of the largest structures in the wake can be predicted quite well by simple models, and expressions are given to predict these and other measurable quantities in future bird flight experiments. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/159666
- author
- Hedenström, Anders LU ; Rosén, Mikael LU and Spedding, G R
- organization
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of the Royal Society Interface
- volume
- 3
- issue
- 7
- pages
- 263 - 276
- publisher
- The Royal Society of Canada
- external identifiers
-
- wos:000238367900005
- pmid:16849236
- scopus:33645805480
- ISSN
- 1742-5662
- DOI
- 10.1098/rsif.2005.0091
- language
- English
- LU publication?
- yes
- id
- b15db8a0-2b56-4af6-bcf1-b38270e27e0f (old id 159666)
- date added to LUP
- 2016-04-01 11:57:40
- date last changed
- 2024-05-06 23:36:57
@article{b15db8a0-2b56-4af6-bcf1-b38270e27e0f,
abstract = {{The wakes of two individual robins were measured in digital particle image velocimetry (DPIV) experiments conducted in the Lund wind tunnel. Wake measurements were compared with each other, and with previous studies in the same facility. There was no significant individual variation in any of the measured quantities. Qualitatively, the wake structure and its gradual variation with flight speed were exactly as previously measured for the thrush nightingale. A procedure that accounts for the disparate sources of circulation spread over the complex wake structure nevertheless can account for the vertical momentum flux required to support the weight, and an example calculation is given for estimating drag from the components of horizontal momentum flux (whose net value is zero). The measured circulations of the largest structures in the wake can be predicted quite well by simple models, and expressions are given to predict these and other measurable quantities in future bird flight experiments.}},
author = {{Hedenström, Anders and Rosén, Mikael and Spedding, G R}},
issn = {{1742-5662}},
language = {{eng}},
number = {{7}},
pages = {{263--276}},
publisher = {{The Royal Society of Canada}},
series = {{Journal of the Royal Society Interface}},
title = {{Vortex wakes generated by robins Erithacus rubecula during free flight in a wind tunnel}},
url = {{http://dx.doi.org/10.1098/rsif.2005.0091}},
doi = {{10.1098/rsif.2005.0091}},
volume = {{3}},
year = {{2006}},
}