Hydrodynamic Strategies for Enhancing Water Flow in the Patos Lagoon Estuary under Extreme Climate Events.
Saved in:
| Title: | Hydrodynamic Strategies for Enhancing Water Flow in the Patos Lagoon Estuary under Extreme Climate Events. |
|---|---|
| Authors: | Silva, Cristiano Vitorino da1 (AUTHOR) cristiano@uricer.edu.br, Vanz, Raul1 (AUTHOR), de Freitas, Marcos Aurélio Vasconcelo2 (AUTHOR), Hunt, Julian David3 (AUTHOR) |
| Source: | Journal of Coastal Research. 2026, Vol. 42 Issue 1, p74-84. 11p. |
| Subjects: | Hydrodynamics, Channel flow, Estuary management, Hydraulic engineering, Climate extremes, Flood damage prevention, Water management, Computational fluid dynamics |
| Geographic Terms: | Patos Lagoon (Brazil), Rio Grande (Brazil), Brazil |
| Abstract: | da Silva, C.V.; Vanz, R.; de Freitas, M.A.V., and Hunt, J.D., 2026. Hydrodynamic strategies for enhancing water flow in the Patos Lagoon estuary under extreme climate events. Journal of Coastal Research, 42(1), 74–84. Charlotte (North Carolina), ISSN 0749-0208. The Patos Lagoon estuary, located in southern Brazil, plays a crucial role in regulating freshwater outflow from inland regions to the South Atlantic Ocean. Recent extreme weather events, such as historic May 2024 floods, have highlighted the importance of efficient estuarine discharge mechanisms to prevent prolonged flooding in adjacent areas. This study investigates the hydrodynamic behavior of the Rio Grande access channel and proposes alternative geometrical configurations to enhance flow during high lagoonlevels. A three-dimensional computational fluid dynamics model using the Shear Stress Transport k-v turbulence model was employed to simulate and compare the performance of the existing channel layout with a modified design featuring a gradual Venturi-shaped constriction. The results indicate that the proposed geometry can increase the average flow rate by up to 26% compared with the current configuration, suggesting potential benefits for flood mitigation scenarios. An estimated USD 1.25 billion investment will be required to enhance the channel's water flow capacity under extreme conditions, which would represent only about 12.5% of the flood-related damages to regions affect by the May 2024 floods in Lake Guaíba and Patos Lagoon. This comparison underscores the economic justification and strategic importance of the proposed intervention, demonstrating viability for this undertaking. The findings are interpreted in light of observed dynamics during real events, recognizing that the jetty system (Molhes da Barra) plays a crucial role in supporting outflow during extreme conditions. This study provides a numerical framework to assess structural optimization in estuarine systems and contributes to ongoing discussions about sustainable hydraulic management under increasing climate variability. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Coastal Research is the property of KnowledgeWorks Global, Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 190955409 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Hydrodynamic Strategies for Enhancing Water Flow in the Patos Lagoon Estuary under Extreme Climate Events. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Silva%2C+Cristiano+Vitorino+da%22">Silva, Cristiano Vitorino da</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> cristiano@uricer.edu.br</i><br /><searchLink fieldCode="AR" term="%22Vanz%2C+Raul%22">Vanz, Raul</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22de+Freitas%2C+Marcos+Aurélio+Vasconcelo%22">de Freitas, Marcos Aurélio Vasconcelo</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hunt%2C+Julian+David%22">Hunt, Julian David</searchLink><relatesTo>3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Coastal+Research%22">Journal of Coastal Research</searchLink>. 2026, Vol. 42 Issue 1, p74-84. 11p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Hydrodynamics%22">Hydrodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Channel+flow%22">Channel flow</searchLink><br /><searchLink fieldCode="DE" term="%22Estuary+management%22">Estuary management</searchLink><br /><searchLink fieldCode="DE" term="%22Hydraulic+engineering%22">Hydraulic engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Climate+extremes%22">Climate extremes</searchLink><br /><searchLink fieldCode="DE" term="%22Flood+damage+prevention%22">Flood damage prevention</searchLink><br /><searchLink fieldCode="DE" term="%22Water+management%22">Water management</searchLink><br /><searchLink fieldCode="DE" term="%22Computational+fluid+dynamics%22">Computational fluid dynamics</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Patos+Lagoon+%28Brazil%29%22">Patos Lagoon (Brazil)</searchLink><br /><searchLink fieldCode="DE" term="%22Rio+Grande+%28Brazil%29%22">Rio Grande (Brazil)</searchLink><br /><searchLink fieldCode="DE" term="%22Brazil%22">Brazil</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: da Silva, C.V.; Vanz, R.; de Freitas, M.A.V., and Hunt, J.D., 2026. Hydrodynamic strategies for enhancing water flow in the Patos Lagoon estuary under extreme climate events. Journal of Coastal Research, 42(1), 74–84. Charlotte (North Carolina), ISSN 0749-0208. The Patos Lagoon estuary, located in southern Brazil, plays a crucial role in regulating freshwater outflow from inland regions to the South Atlantic Ocean. Recent extreme weather events, such as historic May 2024 floods, have highlighted the importance of efficient estuarine discharge mechanisms to prevent prolonged flooding in adjacent areas. This study investigates the hydrodynamic behavior of the Rio Grande access channel and proposes alternative geometrical configurations to enhance flow during high lagoonlevels. A three-dimensional computational fluid dynamics model using the Shear Stress Transport k-v turbulence model was employed to simulate and compare the performance of the existing channel layout with a modified design featuring a gradual Venturi-shaped constriction. The results indicate that the proposed geometry can increase the average flow rate by up to 26% compared with the current configuration, suggesting potential benefits for flood mitigation scenarios. An estimated USD 1.25 billion investment will be required to enhance the channel's water flow capacity under extreme conditions, which would represent only about 12.5% of the flood-related damages to regions affect by the May 2024 floods in Lake Guaíba and Patos Lagoon. This comparison underscores the economic justification and strategic importance of the proposed intervention, demonstrating viability for this undertaking. The findings are interpreted in light of observed dynamics during real events, recognizing that the jetty system (Molhes da Barra) plays a crucial role in supporting outflow during extreme conditions. This study provides a numerical framework to assess structural optimization in estuarine systems and contributes to ongoing discussions about sustainable hydraulic management under increasing climate variability. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Coastal Research is the property of KnowledgeWorks Global, Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=190955409 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.2112/JCOASTRES-D-25-00018.1 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 74 Subjects: – SubjectFull: Hydrodynamics Type: general – SubjectFull: Channel flow Type: general – SubjectFull: Estuary management Type: general – SubjectFull: Hydraulic engineering Type: general – SubjectFull: Climate extremes Type: general – SubjectFull: Flood damage prevention Type: general – SubjectFull: Water management Type: general – SubjectFull: Computational fluid dynamics Type: general – SubjectFull: Patos Lagoon (Brazil) Type: general – SubjectFull: Rio Grande (Brazil) Type: general – SubjectFull: Brazil Type: general Titles: – TitleFull: Hydrodynamic Strategies for Enhancing Water Flow in the Patos Lagoon Estuary under Extreme Climate Events. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Silva, Cristiano Vitorino da – PersonEntity: Name: NameFull: Vanz, Raul – PersonEntity: Name: NameFull: de Freitas, Marcos Aurélio Vasconcelo – PersonEntity: Name: NameFull: Hunt, Julian David IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: 2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 07490208 Numbering: – Type: volume Value: 42 – Type: issue Value: 1 Titles: – TitleFull: Journal of Coastal Research Type: main |
| ResultId | 1 |
