Impact of Vegetation Density on Flow Characteristics in a Straight Compound Channel
Vegetation exists on the floodplains of almost all natural channels. This vegetation results in a number of changes in flow features of open channel flows. Sometimes vegetation also exists within the main channel. This paper presents a numerical study in which the impact of vegetation density on dif...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Mehran University of Engineering and Technology
2013-04-01
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| Series: | Mehran University Research Journal of Engineering and Technology |
| Subjects: | |
| Online Access: | http://publications.muet.edu.pk/research_papers/pdf/pdf819.pdf |
| _version_ | 1811277458950848512 |
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| author | Usman Ghani Shahid Ali Abid Latif |
| author_facet | Usman Ghani Shahid Ali Abid Latif |
| author_sort | Usman Ghani |
| collection | DOAJ |
| description | Vegetation exists on the floodplains of almost all natural channels. This vegetation results in a number of changes in flow features of open channel flows. Sometimes vegetation also exists within the main channel. This paper presents a numerical study in which the impact of vegetation density on different flow features has been considered. The variables investigated included velocity profiles, bed shear stresses, Reynolds stresses and side wall shear stresses. A compound channel with floodplain on both sides of the main channel has been considered. Four different vegetation densities were considered in this work. It was revealed that increase in vegetation density results in a decrease in the velocity values close to the bed and in the upper regions of the flood plains. The Reynolds stresses were also influenced considerably in the lower regions of the channel. Similar patterns were observed in case of bed shear stresses. The vertical profiles of side wall shear stresses were also investigated in this work. Such an investigation will help in enhancing the understanding and improving different conveyance and flow resistance calculation formulae. |
| first_indexed | 2024-04-13T00:16:57Z |
| format | Article |
| id | doaj.art-80c4b89b92af4f33b792296eeabbc496 |
| institution | Directory Open Access Journal |
| issn | 0254-7821 2413-7219 |
| language | English |
| last_indexed | 2024-04-13T00:16:57Z |
| publishDate | 2013-04-01 |
| publisher | Mehran University of Engineering and Technology |
| record_format | Article |
| series | Mehran University Research Journal of Engineering and Technology |
| spelling | doaj.art-80c4b89b92af4f33b792296eeabbc4962022-12-22T03:10:54ZengMehran University of Engineering and TechnologyMehran University Research Journal of Engineering and Technology0254-78212413-72192013-04-01324631638Impact of Vegetation Density on Flow Characteristics in a Straight Compound ChannelUsman Ghani0Shahid Ali1Abid Latif2Department of Civil Engineering, University of Engineering & Technology, Taxila, PakistanPakistan Atomic Energy Commission, Islamabad, PakistanDepartment of Civil Engineering, University College of Engineering & Technology, BZU, Multan, PakistanVegetation exists on the floodplains of almost all natural channels. This vegetation results in a number of changes in flow features of open channel flows. Sometimes vegetation also exists within the main channel. This paper presents a numerical study in which the impact of vegetation density on different flow features has been considered. The variables investigated included velocity profiles, bed shear stresses, Reynolds stresses and side wall shear stresses. A compound channel with floodplain on both sides of the main channel has been considered. Four different vegetation densities were considered in this work. It was revealed that increase in vegetation density results in a decrease in the velocity values close to the bed and in the upper regions of the flood plains. The Reynolds stresses were also influenced considerably in the lower regions of the channel. Similar patterns were observed in case of bed shear stresses. The vertical profiles of side wall shear stresses were also investigated in this work. Such an investigation will help in enhancing the understanding and improving different conveyance and flow resistance calculation formulae.http://publications.muet.edu.pk/research_papers/pdf/pdf819.pdfVegetationCompound ChannelVelocity ProfilesWall Shear StressesReynolds Stresses |
| spellingShingle | Usman Ghani Shahid Ali Abid Latif Impact of Vegetation Density on Flow Characteristics in a Straight Compound Channel Mehran University Research Journal of Engineering and Technology Vegetation Compound Channel Velocity Profiles Wall Shear Stresses Reynolds Stresses |
| title | Impact of Vegetation Density on Flow Characteristics in a Straight Compound Channel |
| title_full | Impact of Vegetation Density on Flow Characteristics in a Straight Compound Channel |
| title_fullStr | Impact of Vegetation Density on Flow Characteristics in a Straight Compound Channel |
| title_full_unstemmed | Impact of Vegetation Density on Flow Characteristics in a Straight Compound Channel |
| title_short | Impact of Vegetation Density on Flow Characteristics in a Straight Compound Channel |
| title_sort | impact of vegetation density on flow characteristics in a straight compound channel |
| topic | Vegetation Compound Channel Velocity Profiles Wall Shear Stresses Reynolds Stresses |
| url | http://publications.muet.edu.pk/research_papers/pdf/pdf819.pdf |
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