Laboratory experiment on the 3D tide-induced Lagrangian residual current using the PIV technique.
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| Title: | Laboratory experiment on the 3D tide-induced Lagrangian residual current using the PIV technique. |
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| Authors: | Chen, Yang1, Jiang, Wensheng wsjang@ouc.edu.cn, Chen, Xu1, Wang, Tao2, Bian, Changwei1 |
| Source: | Ocean Dynamics. Dec2017, Vol. 67 Issue 12, p1567-1576. 10p. |
| Subjects: | Mathematical models of hydrodynamics, Water depth, Flow velocity, Fluid dynamics, Velocimetry |
| Abstract: | The 3D structure of the tide-induced Lagrangian residual current was studied using the particle image velocimetry (PIV) technique in a long shallow narrow tank in the laboratory. At the mouth of the tank, a wave generator was used to make periodic wave which represents the tide movement, and at the head of the tank, a laterally sloping topography with the length of one fifth of the water tank was installed, above which the tide-induced Lagrangian residual current was studied. Under the weakly nonlinear condition in the present experiment setup, the results show that the Lagrangian residual velocity (LRV) field has a three-layer structure. The residual current flows inwards (towards the head) in the bottom layer and flows outwards in the middle layer, while in the surface layer, it flows inwards along the shallow side of the sloping topography and outwards along the deep side. The depth-averaged and breadth-averaged LRV are also analyzed based on the 3D LRV observations. Our results are in good agreement with the previous experiment studies, the analytical solutions with similar conditions and the observational results in real bays. Moreover, the volume flux comparison between the Lagrangian and Eulerian residual currents shows that the Eulerian residual velocity violates the mass conservation law while the LRV truly represents the inter-tidal water transport. This work enriches the laboratory studies of the LRV and offers valuable references for the LRV studies in real bays. [ABSTRACT FROM AUTHOR] |
| Copyright of Ocean Dynamics is the property of Springer Nature 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 |
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| Items | – Name: Title Label: Title Group: Ti Data: Laboratory experiment on the 3D tide-induced Lagrangian residual current using the PIV technique. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Chen%2C+Yang%22">Chen, Yang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Jiang%2C+Wensheng%22">Jiang, Wensheng</searchLink><i> wsjang@ouc.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Xu%22">Chen, Xu</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Wang%2C+Tao%22">Wang, Tao</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Bian%2C+Changwei%22">Bian, Changwei</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Ocean+Dynamics%22">Ocean Dynamics</searchLink>. Dec2017, Vol. 67 Issue 12, p1567-1576. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Mathematical+models+of+hydrodynamics%22">Mathematical models of hydrodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Water+depth%22">Water depth</searchLink><br /><searchLink fieldCode="DE" term="%22Flow+velocity%22">Flow velocity</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+dynamics%22">Fluid dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Velocimetry%22">Velocimetry</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The 3D structure of the tide-induced Lagrangian residual current was studied using the particle image velocimetry (PIV) technique in a long shallow narrow tank in the laboratory. At the mouth of the tank, a wave generator was used to make periodic wave which represents the tide movement, and at the head of the tank, a laterally sloping topography with the length of one fifth of the water tank was installed, above which the tide-induced Lagrangian residual current was studied. Under the weakly nonlinear condition in the present experiment setup, the results show that the Lagrangian residual velocity (LRV) field has a three-layer structure. The residual current flows inwards (towards the head) in the bottom layer and flows outwards in the middle layer, while in the surface layer, it flows inwards along the shallow side of the sloping topography and outwards along the deep side. The depth-averaged and breadth-averaged LRV are also analyzed based on the 3D LRV observations. Our results are in good agreement with the previous experiment studies, the analytical solutions with similar conditions and the observational results in real bays. Moreover, the volume flux comparison between the Lagrangian and Eulerian residual currents shows that the Eulerian residual velocity violates the mass conservation law while the LRV truly represents the inter-tidal water transport. This work enriches the laboratory studies of the LRV and offers valuable references for the LRV studies in real bays. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Ocean Dynamics is the property of Springer Nature 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.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s10236-017-1108-6 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 1567 Subjects: – SubjectFull: Mathematical models of hydrodynamics Type: general – SubjectFull: Water depth Type: general – SubjectFull: Flow velocity Type: general – SubjectFull: Fluid dynamics Type: general – SubjectFull: Velocimetry Type: general Titles: – TitleFull: Laboratory experiment on the 3D tide-induced Lagrangian residual current using the PIV technique. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Chen, Yang – PersonEntity: Name: NameFull: Jiang, Wensheng – PersonEntity: Name: NameFull: Chen, Xu – PersonEntity: Name: NameFull: Wang, Tao – PersonEntity: Name: NameFull: Bian, Changwei IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2017 Type: published Y: 2017 Identifiers: – Type: issn-print Value: 16167341 Numbering: – Type: volume Value: 67 – Type: issue Value: 12 Titles: – TitleFull: Ocean Dynamics Type: main |
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