Numerical Experiments of Uni- And Bi-Directional Exchange Flows in A Rotating Trapezoidal Sill-Channel

Manel Grifoll; Alan Cuthbertson; Jarle Berntsen; Maria Chiara De Falco; Claudia Adduce

doi:10.3850/IAHR-39WC2521711920221561

Numerical Experiments of Uni- And Bi-Directional Exchange Flows in A Rotating Trapezoidal Sill-Channel

Manel Grifoll
, Alan Cuthbertson
, Jarle Berntsen
, Maria Chiara De Falco
, Claudia Adduce

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Results are presented for new laboratory-scale numerical simulations of uni- and bi-directional stratified flows generated within an idealized trapezoidal channel topography, as representative of net-barotropic exchange flows generated through sea straits between water masses with different densities. These simulations utilise the Bergen Ocean Model (BOM), a three-dimensional general ocean circulation model, both in non-rotating and rotating frames of reference. The results from the BOM simulations are aimed at simulating the large-scale experimental data obtained in the LEGI Coriolis rotating platform in Grenoble, within which velocity and density fields for exchange flows were measured through particle image velocimetry (PIV) and micro-conductivity density probes, respectively. The BOM simulations are shown to reproduce the main dynamic flow patterns and trends of the large-scale exchange flows through the trapezoidal channel, with the lower layer saline intrusion flux shown to reduce (i.e. due to partial blockage) as the upper freshwater flow is increased. These simulations represent preliminary numerical results and we expect that future simulations will improve overall representation of the interfacial region between the counter-flowing layers, and thus be relevant to many exchange flows generated in wide estuaries, sea straits and deep-ocean channels.

Original language	English
Title of host publication	Proceedings of the 39th IAHR World Congress
Subtitle of host publication	(Granada, 2022)
Editors	Miguel Ortega-Sánchez
Publisher	International Association for Hydro-Environment Engineering and Research (IAHR)
Pages	4134-4139
Number of pages	6
ISBN (Electronic)	9789083261218
DOIs	https://doi.org/10.3850/IAHR-39WC2521711920221561
Publication status	Published - 2022
Event	39th IAHR World Congress, 2022: From snow to sea - Granada, Spain Duration: 19 Jun 2022 → 24 Jun 2022 Conference number: 39

Publication series

Name	Proceedings of the IAHR World Congress
ISSN (Print)	2521-7119
ISSN (Electronic)	2521-716X

Conference

Conference	39th IAHR World Congress, 2022
Country/Territory	Spain
City	Granada
Period	19/06/22 → 24/06/22

Keywords

dynamic blocking
exchange flow
lab-scale modelling
numerical simulations
trapezoidal channel topography

ASJC Scopus subject areas

Engineering (miscellaneous)
Civil and Structural Engineering
Ocean Engineering
Water Science and Technology

Access to Document

10.3850/IAHR-39WC2521711920221561

Cite this

Grifoll, M., Cuthbertson, A., Berntsen, J., De Falco, M. C., & Adduce, C. (2022). Numerical Experiments of Uni- And Bi-Directional Exchange Flows in A Rotating Trapezoidal Sill-Channel. In M. Ortega-Sánchez (Ed.), Proceedings of the 39th IAHR World Congress : (Granada, 2022) (pp. 4134-4139). (Proceedings of the IAHR World Congress). International Association for Hydro-Environment Engineering and Research (IAHR). https://doi.org/10.3850/IAHR-39WC2521711920221561

Grifoll, Manel ; Cuthbertson, Alan ; Berntsen, Jarle et al. / Numerical Experiments of Uni- And Bi-Directional Exchange Flows in A Rotating Trapezoidal Sill-Channel. Proceedings of the 39th IAHR World Congress : (Granada, 2022). editor / Miguel Ortega-Sánchez. International Association for Hydro-Environment Engineering and Research (IAHR), 2022. pp. 4134-4139 (Proceedings of the IAHR World Congress).

@inproceedings{226df81915ca4f6f93dfdeff201490fb,

title = "Numerical Experiments of Uni- And Bi-Directional Exchange Flows in A Rotating Trapezoidal Sill-Channel",

abstract = "Results are presented for new laboratory-scale numerical simulations of uni- and bi-directional stratified flows generated within an idealized trapezoidal channel topography, as representative of net-barotropic exchange flows generated through sea straits between water masses with different densities. These simulations utilise the Bergen Ocean Model (BOM), a three-dimensional general ocean circulation model, both in non-rotating and rotating frames of reference. The results from the BOM simulations are aimed at simulating the large-scale experimental data obtained in the LEGI Coriolis rotating platform in Grenoble, within which velocity and density fields for exchange flows were measured through particle image velocimetry (PIV) and micro-conductivity density probes, respectively. The BOM simulations are shown to reproduce the main dynamic flow patterns and trends of the large-scale exchange flows through the trapezoidal channel, with the lower layer saline intrusion flux shown to reduce (i.e. due to partial blockage) as the upper freshwater flow is increased. These simulations represent preliminary numerical results and we expect that future simulations will improve overall representation of the interfacial region between the counter-flowing layers, and thus be relevant to many exchange flows generated in wide estuaries, sea straits and deep-ocean channels.",

keywords = "dynamic blocking, exchange flow, lab-scale modelling, numerical simulations, trapezoidal channel topography",

author = "Manel Grifoll and Alan Cuthbertson and Jarle Berntsen and \{De Falco\}, \{Maria Chiara\} and Claudia Adduce",

note = "Publisher Copyright: {\textcopyright} 2022 IAHR. Used with permission.; 39th IAHR World Congress, 2022 : From snow to sea ; Conference date: 19-06-2022 Through 24-06-2022",

year = "2022",

doi = "10.3850/IAHR-39WC2521711920221561",

language = "English",

series = "Proceedings of the IAHR World Congress",

publisher = "International Association for Hydro-Environment Engineering and Research (IAHR)",

pages = "4134--4139",

editor = "Miguel Ortega-S{\'a}nchez",

booktitle = "Proceedings of the 39th IAHR World Congress",

}

Grifoll, M, Cuthbertson, A, Berntsen, J, De Falco, MC & Adduce, C 2022, Numerical Experiments of Uni- And Bi-Directional Exchange Flows in A Rotating Trapezoidal Sill-Channel. in M Ortega-Sánchez (ed.), Proceedings of the 39th IAHR World Congress : (Granada, 2022). Proceedings of the IAHR World Congress, International Association for Hydro-Environment Engineering and Research (IAHR), pp. 4134-4139, 39th IAHR World Congress, 2022, Granada, Spain, 19/06/22. https://doi.org/10.3850/IAHR-39WC2521711920221561

Numerical Experiments of Uni- And Bi-Directional Exchange Flows in A Rotating Trapezoidal Sill-Channel. / Grifoll, Manel; Cuthbertson, Alan; Berntsen, Jarle et al.
Proceedings of the 39th IAHR World Congress : (Granada, 2022). ed. / Miguel Ortega-Sánchez. International Association for Hydro-Environment Engineering and Research (IAHR), 2022. p. 4134-4139 (Proceedings of the IAHR World Congress).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Numerical Experiments of Uni- And Bi-Directional Exchange Flows in A Rotating Trapezoidal Sill-Channel

AU - Grifoll, Manel

AU - Cuthbertson, Alan

AU - Berntsen, Jarle

AU - De Falco, Maria Chiara

AU - Adduce, Claudia

N1 - Conference code: 39

PY - 2022

Y1 - 2022

N2 - Results are presented for new laboratory-scale numerical simulations of uni- and bi-directional stratified flows generated within an idealized trapezoidal channel topography, as representative of net-barotropic exchange flows generated through sea straits between water masses with different densities. These simulations utilise the Bergen Ocean Model (BOM), a three-dimensional general ocean circulation model, both in non-rotating and rotating frames of reference. The results from the BOM simulations are aimed at simulating the large-scale experimental data obtained in the LEGI Coriolis rotating platform in Grenoble, within which velocity and density fields for exchange flows were measured through particle image velocimetry (PIV) and micro-conductivity density probes, respectively. The BOM simulations are shown to reproduce the main dynamic flow patterns and trends of the large-scale exchange flows through the trapezoidal channel, with the lower layer saline intrusion flux shown to reduce (i.e. due to partial blockage) as the upper freshwater flow is increased. These simulations represent preliminary numerical results and we expect that future simulations will improve overall representation of the interfacial region between the counter-flowing layers, and thus be relevant to many exchange flows generated in wide estuaries, sea straits and deep-ocean channels.

AB - Results are presented for new laboratory-scale numerical simulations of uni- and bi-directional stratified flows generated within an idealized trapezoidal channel topography, as representative of net-barotropic exchange flows generated through sea straits between water masses with different densities. These simulations utilise the Bergen Ocean Model (BOM), a three-dimensional general ocean circulation model, both in non-rotating and rotating frames of reference. The results from the BOM simulations are aimed at simulating the large-scale experimental data obtained in the LEGI Coriolis rotating platform in Grenoble, within which velocity and density fields for exchange flows were measured through particle image velocimetry (PIV) and micro-conductivity density probes, respectively. The BOM simulations are shown to reproduce the main dynamic flow patterns and trends of the large-scale exchange flows through the trapezoidal channel, with the lower layer saline intrusion flux shown to reduce (i.e. due to partial blockage) as the upper freshwater flow is increased. These simulations represent preliminary numerical results and we expect that future simulations will improve overall representation of the interfacial region between the counter-flowing layers, and thus be relevant to many exchange flows generated in wide estuaries, sea straits and deep-ocean channels.

KW - dynamic blocking

KW - exchange flow

KW - lab-scale modelling

KW - numerical simulations

KW - trapezoidal channel topography

UR - https://www.scopus.com/pages/publications/85177219610

U2 - 10.3850/IAHR-39WC2521711920221561

DO - 10.3850/IAHR-39WC2521711920221561

M3 - Conference contribution

AN - SCOPUS:85177219610

T3 - Proceedings of the IAHR World Congress

SP - 4134

EP - 4139

BT - Proceedings of the 39th IAHR World Congress

A2 - Ortega-Sánchez, Miguel

PB - International Association for Hydro-Environment Engineering and Research (IAHR)

T2 - 39th IAHR World Congress, 2022

Y2 - 19 June 2022 through 24 June 2022

ER -

Grifoll M, Cuthbertson A, Berntsen J, De Falco MC, Adduce C. Numerical Experiments of Uni- And Bi-Directional Exchange Flows in A Rotating Trapezoidal Sill-Channel. In Ortega-Sánchez M, editor, Proceedings of the 39th IAHR World Congress : (Granada, 2022). International Association for Hydro-Environment Engineering and Research (IAHR). 2022. p. 4134-4139. (Proceedings of the IAHR World Congress). doi: 10.3850/IAHR-39WC2521711920221561

Numerical Experiments of Uni- And Bi-Directional Exchange Flows in A Rotating Trapezoidal Sill-Channel

Abstract

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Keywords

ASJC Scopus subject areas

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Numerical experiments of uni- and bi-directional exchange flows in a rotating trapezoidal sill-channel

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