The Dynamics of Bi-Directional Exchange Flows: Implications for Morphodynamic Change within Estuaries

Claudia Adduce, Maria Chiara De Falco, Alan Cuthbertson, Janek Laanearu, Daniela Malcangio, Katrin Kaur, Eletta Negretti, Joel Sommeria, Thomas Valran, Samuel Viboud

Research output: Contribution to conferencePaper

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Abstract

An experimental study has been conducted at the CNRS Coriolis Rotating Platform at LEGI, Grenoble, in a trapezoidal cross section channel, to investigate uni and bi-directional exchange flows. Both rotating and non rotating experiments, with a non-erodible and erodible bed layer were considered. Experimental measurements focused on obtaining high-resolution velocity and density fields in different vertical planes spanning the width of the channel using 2D Particle Image Velocimetry, Laser Induced Fluorescence, ADV and micro-conductivity probes in several channel sections. Preliminary results from the study are presented herein and consider the exchange flow dynamics at the interface, with particular focus on the observed cross-channel variations in the counter-flowing water masses and layer thickness. Further analyses are ongoing to improve understanding of the interfacial mixing and entrainment/detrainment processes, along with the bed-morphological changes initiated by interaction mechanisms between the erodible bottom boundary and the uni- or bi-directional exchange flows.
Original languageEnglish
Pages1-9
Number of pages9
Publication statusPublished - 2019
EventHydralab+ Joint User Meeting - Bucharest, Romania
Duration: 23 May 2019 → …
https://hydralab.eu/taking-part/Hydralab-Bucharest-Event/paper-submission/

Conference

ConferenceHydralab+ Joint User Meeting
CountryRomania
CityBucharest
Period23/05/19 → …
Internet address

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morphodynamics
estuary
laser induced fluorescence
entrainment
water mass
conductivity
experimental study
cross section
probe
experiment

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Adduce, C., De Falco, M. C., Cuthbertson, A., Laanearu, J., Malcangio, D., Kaur, K., ... Viboud, S. (2019). The Dynamics of Bi-Directional Exchange Flows: Implications for Morphodynamic Change within Estuaries. 1-9. Paper presented at Hydralab+ Joint User Meeting, Bucharest, Romania.
Adduce, Claudia ; De Falco, Maria Chiara ; Cuthbertson, Alan ; Laanearu, Janek ; Malcangio, Daniela ; Kaur, Katrin ; Negretti, Eletta ; Sommeria, Joel ; Valran, Thomas ; Viboud, Samuel. / The Dynamics of Bi-Directional Exchange Flows : Implications for Morphodynamic Change within Estuaries. Paper presented at Hydralab+ Joint User Meeting, Bucharest, Romania.9 p.
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abstract = "An experimental study has been conducted at the CNRS Coriolis Rotating Platform at LEGI, Grenoble, in a trapezoidal cross section channel, to investigate uni and bi-directional exchange flows. Both rotating and non rotating experiments, with a non-erodible and erodible bed layer were considered. Experimental measurements focused on obtaining high-resolution velocity and density fields in different vertical planes spanning the width of the channel using 2D Particle Image Velocimetry, Laser Induced Fluorescence, ADV and micro-conductivity probes in several channel sections. Preliminary results from the study are presented herein and consider the exchange flow dynamics at the interface, with particular focus on the observed cross-channel variations in the counter-flowing water masses and layer thickness. Further analyses are ongoing to improve understanding of the interfacial mixing and entrainment/detrainment processes, along with the bed-morphological changes initiated by interaction mechanisms between the erodible bottom boundary and the uni- or bi-directional exchange flows.",
author = "Claudia Adduce and {De Falco}, {Maria Chiara} and Alan Cuthbertson and Janek Laanearu and Daniela Malcangio and Katrin Kaur and Eletta Negretti and Joel Sommeria and Thomas Valran and Samuel Viboud",
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Adduce, C, De Falco, MC, Cuthbertson, A, Laanearu, J, Malcangio, D, Kaur, K, Negretti, E, Sommeria, J, Valran, T & Viboud, S 2019, 'The Dynamics of Bi-Directional Exchange Flows: Implications for Morphodynamic Change within Estuaries' Paper presented at Hydralab+ Joint User Meeting, Bucharest, Romania, 23/05/19, pp. 1-9.

The Dynamics of Bi-Directional Exchange Flows : Implications for Morphodynamic Change within Estuaries. / Adduce, Claudia; De Falco, Maria Chiara; Cuthbertson, Alan; Laanearu, Janek; Malcangio, Daniela; Kaur, Katrin; Negretti, Eletta; Sommeria, Joel; Valran, Thomas; Viboud, Samuel.

2019. 1-9 Paper presented at Hydralab+ Joint User Meeting, Bucharest, Romania.

Research output: Contribution to conferencePaper

TY - CONF

T1 - The Dynamics of Bi-Directional Exchange Flows

T2 - Implications for Morphodynamic Change within Estuaries

AU - Adduce, Claudia

AU - De Falco, Maria Chiara

AU - Cuthbertson, Alan

AU - Laanearu, Janek

AU - Malcangio, Daniela

AU - Kaur, Katrin

AU - Negretti, Eletta

AU - Sommeria, Joel

AU - Valran, Thomas

AU - Viboud, Samuel

N1 - Proceedings of the HYDRALAB+ Joint User Meeting, Bucharest, May 2019

PY - 2019

Y1 - 2019

N2 - An experimental study has been conducted at the CNRS Coriolis Rotating Platform at LEGI, Grenoble, in a trapezoidal cross section channel, to investigate uni and bi-directional exchange flows. Both rotating and non rotating experiments, with a non-erodible and erodible bed layer were considered. Experimental measurements focused on obtaining high-resolution velocity and density fields in different vertical planes spanning the width of the channel using 2D Particle Image Velocimetry, Laser Induced Fluorescence, ADV and micro-conductivity probes in several channel sections. Preliminary results from the study are presented herein and consider the exchange flow dynamics at the interface, with particular focus on the observed cross-channel variations in the counter-flowing water masses and layer thickness. Further analyses are ongoing to improve understanding of the interfacial mixing and entrainment/detrainment processes, along with the bed-morphological changes initiated by interaction mechanisms between the erodible bottom boundary and the uni- or bi-directional exchange flows.

AB - An experimental study has been conducted at the CNRS Coriolis Rotating Platform at LEGI, Grenoble, in a trapezoidal cross section channel, to investigate uni and bi-directional exchange flows. Both rotating and non rotating experiments, with a non-erodible and erodible bed layer were considered. Experimental measurements focused on obtaining high-resolution velocity and density fields in different vertical planes spanning the width of the channel using 2D Particle Image Velocimetry, Laser Induced Fluorescence, ADV and micro-conductivity probes in several channel sections. Preliminary results from the study are presented herein and consider the exchange flow dynamics at the interface, with particular focus on the observed cross-channel variations in the counter-flowing water masses and layer thickness. Further analyses are ongoing to improve understanding of the interfacial mixing and entrainment/detrainment processes, along with the bed-morphological changes initiated by interaction mechanisms between the erodible bottom boundary and the uni- or bi-directional exchange flows.

M3 - Paper

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EP - 9

ER -

Adduce C, De Falco MC, Cuthbertson A, Laanearu J, Malcangio D, Kaur K et al. The Dynamics of Bi-Directional Exchange Flows: Implications for Morphodynamic Change within Estuaries. 2019. Paper presented at Hydralab+ Joint User Meeting, Bucharest, Romania.