Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 46-55 |
| Number of pages | 10 |
| Journal | Journal of Hydraulic Research |
| Volume | 51 |
| Issue number | 1 |
| Early online date | 8 Feb 2013 |
| DOIs | |
| Publication status | Published - 2013 |
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Keywords
- aquatic vegetation
- drag
- dynamic reconfiguration of plants
- open-channel flow
- turbulence
Cite this
Dynamic reconfiguration of aquatic plants and its interrelations with upstream turbulence and drag forces. / Siniscalchi, Fabio; Nikora, Vladimir.
In: Journal of Hydraulic Research, Vol. 51, No. 1, 2013, p. 46-55.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Dynamic reconfiguration of aquatic plants and its interrelations with upstream turbulence and drag forces
AU - Siniscalchi, Fabio
AU - Nikora, Vladimir
N1 - Acknowledgements The authors thank Dr Stuart Cameron for his help with the video processing, and the Associate Editor and three anonymous reviewers for providing their detailed and helpful comments. The research was partly supported by the Leverhulme Trust, grant F/00152/Z “Biophysics of flow–plant interactions in aquatic systems”, and was stimulated by the Scientific Research Network WO.027p11N.
PY - 2013
Y1 - 2013
N2 - This article explores the interrelations between flow, fluctuating drag forces, and dynamic reconfiguration experienced by four freshwater plant species in response to turbulent open-channel flow. The study is based on experiments conducted in a laboratory flume using single specimens of Ranunculus penicillatus, Fontinalis antipyretica, Myriophyllum alterniflorum, and Callitriche stagnalis. A significant correlation between drag fluctuations, plant movements, and upstream turbulence was found. The data also revealed that the plants in general exhibited spatial flapping-like motion, with the propagation velocity of perturbations along the plant being approximately constant and comparable to the upstream flow velocity. The analysis of statistical moments, spectra, cross-correlations, and coherence functions provided strong support to the conclusion that the dynamic reconfiguration directly affects the drag force exerted on the plants, in addition to the effect of the upstream turbulence.
AB - This article explores the interrelations between flow, fluctuating drag forces, and dynamic reconfiguration experienced by four freshwater plant species in response to turbulent open-channel flow. The study is based on experiments conducted in a laboratory flume using single specimens of Ranunculus penicillatus, Fontinalis antipyretica, Myriophyllum alterniflorum, and Callitriche stagnalis. A significant correlation between drag fluctuations, plant movements, and upstream turbulence was found. The data also revealed that the plants in general exhibited spatial flapping-like motion, with the propagation velocity of perturbations along the plant being approximately constant and comparable to the upstream flow velocity. The analysis of statistical moments, spectra, cross-correlations, and coherence functions provided strong support to the conclusion that the dynamic reconfiguration directly affects the drag force exerted on the plants, in addition to the effect of the upstream turbulence.
KW - aquatic vegetation
KW - drag
KW - dynamic reconfiguration of plants
KW - open-channel flow
KW - turbulence
U2 - 10.1080/00221686.2012.743486
DO - 10.1080/00221686.2012.743486
M3 - Article
VL - 51
SP - 46
EP - 55
JO - Journal of Hydraulic Research
JF - Journal of Hydraulic Research
SN - 0022-1686
IS - 1
ER -