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A Numerical Study on the Influence of Riparian Vegetation Patch on the Transportation of Suspended Sediment in a U-Bend Channel Flow

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Název: A Numerical Study on the Influence of Riparian Vegetation Patch on the Transportation of Suspended Sediment in a U-Bend Channel Flow
Autoři: Mingyang Wang, Qian Yu, Yuan Xu, Na Li, Jing Wang, Bo Cao, Lu Wang, Eldad J. Avital
Zdroj: Fluids, Vol 9, Iss 5, p 109 (2024)
Informace o vydavateli: MDPI AG
Rok vydání: 2024
Sbírka: Directory of Open Access Journals: DOAJ Articles
Témata: suspended sediment transport, U-bend channel flow, turbulence structures, probability density function (PDF), variance of PDF, particles’ vertical entrainment, Thermodynamics, QC310.15-319, Descriptive and experimental mechanics, QC120-168.85
Popis: Bend sections are ubiquitous in natural sandy river systems. This study employs Computational Fluid Dynamics–Discrete Phase Model (CFD-DPM) methodology to analyze particle transport dynamics in U-bend channel flows, focusing on the distinctions between partially vegetated (Case No.1) and non-vegetated (Case No.2) scenarios. The research aims to unravel the intricate relationships among bending channel-induced secondary flow, vegetation blockage, and particle aggregation, employing both quantitative and qualitative approaches. (I) The key findings reveal that vegetation near the inner walls of curved channels markedly diminishes the intensity of secondary circulation. This reduction in circulation intensity is observed not only within vegetated areas but also extends to adjacent non-vegetated zones. Additionally, the study identifies a close correlation between vertical vortices and particle distribution near the channel bed. While particle distribution generally aligns with the vortices’ margin, dynamic patch-scale eddies near vegetation patches induce deviations, creating wave-like patterns in particle distribution. (II) The application of the Probability Density Function (PDF) provides insights into the radius-wise particle distribution. In non-vegetated channels, particle distribution is primarily influenced by secondary flow and boundary layers. In contrast, the presence of vegetation leads to a complex mixing layer, altering the particle distribution pattern and maximizing PDF values in non-vegetated free flow subzones. (III) Furthermore, the research quantifies spatial–temporal sediment heterogeneity through PDF variance. The findings demonstrate that variance in non-vegetated channels increases towards the outer wall in bending regions. Vegetation-induced turbulence causes higher variance, particularly in the mixing layer subzone, underscoring the significance of eddy size in sediment redistribution. (IV) The study of vertical concentration profiles in vegetated U-bend channels offers additional insights, ...
Druh dokumentu: article in journal/newspaper
Jazyk: English
Relation: https://www.mdpi.com/2311-5521/9/5/109; https://doaj.org/toc/2311-5521; https://doaj.org/article/3d7f6211fd2a41cbb717ed370138fcfd
DOI: 10.3390/fluids9050109
Dostupnost: https://doi.org/10.3390/fluids9050109
https://doaj.org/article/3d7f6211fd2a41cbb717ed370138fcfd
Přístupové číslo: edsbas.2637AF20
Databáze: BASE
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  – Url: https://doi.org/10.3390/fluids9050109#
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: A Numerical Study on the Influence of Riparian Vegetation Patch on the Transportation of Suspended Sediment in a U-Bend Channel Flow
– Name: Author
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  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Mingyang+Wang%22">Mingyang Wang</searchLink><br /><searchLink fieldCode="AR" term="%22Qian+Yu%22">Qian Yu</searchLink><br /><searchLink fieldCode="AR" term="%22Yuan+Xu%22">Yuan Xu</searchLink><br /><searchLink fieldCode="AR" term="%22Na+Li%22">Na Li</searchLink><br /><searchLink fieldCode="AR" term="%22Jing+Wang%22">Jing Wang</searchLink><br /><searchLink fieldCode="AR" term="%22Bo+Cao%22">Bo Cao</searchLink><br /><searchLink fieldCode="AR" term="%22Lu+Wang%22">Lu Wang</searchLink><br /><searchLink fieldCode="AR" term="%22Eldad+J%2E+Avital%22">Eldad J. Avital</searchLink>
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  Data: Fluids, Vol 9, Iss 5, p 109 (2024)
– Name: Publisher
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  Data: MDPI AG
– Name: DatePubCY
  Label: Publication Year
  Group: Date
  Data: 2024
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  Label: Collection
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  Data: Directory of Open Access Journals: DOAJ Articles
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  Data: <searchLink fieldCode="DE" term="%22suspended+sediment+transport%22">suspended sediment transport</searchLink><br /><searchLink fieldCode="DE" term="%22U-bend+channel+flow%22">U-bend channel flow</searchLink><br /><searchLink fieldCode="DE" term="%22turbulence+structures%22">turbulence structures</searchLink><br /><searchLink fieldCode="DE" term="%22probability+density+function+%28PDF%29%22">probability density function (PDF)</searchLink><br /><searchLink fieldCode="DE" term="%22variance+of+PDF%22">variance of PDF</searchLink><br /><searchLink fieldCode="DE" term="%22particles%27+vertical+entrainment%22">particles’ vertical entrainment</searchLink><br /><searchLink fieldCode="DE" term="%22Thermodynamics%22">Thermodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22QC310%2E15-319%22">QC310.15-319</searchLink><br /><searchLink fieldCode="DE" term="%22Descriptive+and+experimental+mechanics%22">Descriptive and experimental mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22QC120-168%2E85%22">QC120-168.85</searchLink>
– Name: Abstract
  Label: Description
  Group: Ab
  Data: Bend sections are ubiquitous in natural sandy river systems. This study employs Computational Fluid Dynamics–Discrete Phase Model (CFD-DPM) methodology to analyze particle transport dynamics in U-bend channel flows, focusing on the distinctions between partially vegetated (Case No.1) and non-vegetated (Case No.2) scenarios. The research aims to unravel the intricate relationships among bending channel-induced secondary flow, vegetation blockage, and particle aggregation, employing both quantitative and qualitative approaches. (I) The key findings reveal that vegetation near the inner walls of curved channels markedly diminishes the intensity of secondary circulation. This reduction in circulation intensity is observed not only within vegetated areas but also extends to adjacent non-vegetated zones. Additionally, the study identifies a close correlation between vertical vortices and particle distribution near the channel bed. While particle distribution generally aligns with the vortices’ margin, dynamic patch-scale eddies near vegetation patches induce deviations, creating wave-like patterns in particle distribution. (II) The application of the Probability Density Function (PDF) provides insights into the radius-wise particle distribution. In non-vegetated channels, particle distribution is primarily influenced by secondary flow and boundary layers. In contrast, the presence of vegetation leads to a complex mixing layer, altering the particle distribution pattern and maximizing PDF values in non-vegetated free flow subzones. (III) Furthermore, the research quantifies spatial–temporal sediment heterogeneity through PDF variance. The findings demonstrate that variance in non-vegetated channels increases towards the outer wall in bending regions. Vegetation-induced turbulence causes higher variance, particularly in the mixing layer subzone, underscoring the significance of eddy size in sediment redistribution. (IV) The study of vertical concentration profiles in vegetated U-bend channels offers additional insights, ...
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  Data: article in journal/newspaper
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  Data: English
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  Data: https://www.mdpi.com/2311-5521/9/5/109; https://doaj.org/toc/2311-5521; https://doaj.org/article/3d7f6211fd2a41cbb717ed370138fcfd
– Name: DOI
  Label: DOI
  Group: ID
  Data: 10.3390/fluids9050109
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  Data: https://doi.org/10.3390/fluids9050109<br />https://doaj.org/article/3d7f6211fd2a41cbb717ed370138fcfd
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  Data: edsbas.2637AF20
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RecordInfo BibRecord:
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        Value: 10.3390/fluids9050109
    Languages:
      – Text: English
    Subjects:
      – SubjectFull: suspended sediment transport
        Type: general
      – SubjectFull: U-bend channel flow
        Type: general
      – SubjectFull: turbulence structures
        Type: general
      – SubjectFull: probability density function (PDF)
        Type: general
      – SubjectFull: variance of PDF
        Type: general
      – SubjectFull: particles’ vertical entrainment
        Type: general
      – SubjectFull: Thermodynamics
        Type: general
      – SubjectFull: QC310.15-319
        Type: general
      – SubjectFull: Descriptive and experimental mechanics
        Type: general
      – SubjectFull: QC120-168.85
        Type: general
    Titles:
      – TitleFull: A Numerical Study on the Influence of Riparian Vegetation Patch on the Transportation of Suspended Sediment in a U-Bend Channel Flow
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            NameFull: Mingyang Wang
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              Y: 2024
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          Titles:
            – TitleFull: Fluids, Vol 9, Iss 5, p 109 (2024
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