Preliminary experimental study on effectiveness of aquatic vegetation on sediment transport capacity
Vegetation affects sediment transport by obstructing the flow and changing the turbulence characteristics. Common sediment transport equations are not applicable to situations with submerged vegetation. A laboratory experiment was carried out in which flow, vegetation, and sediment transport were...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2021
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| Online Access: | http://journalarticle.ukm.my/19088/1/08.pdf http://journalarticle.ukm.my/19088/ https://www.ukm.my/jkukm/si-42-2021/ |
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| Summary: | Vegetation affects sediment transport by obstructing the flow and changing the turbulence characteristics. Common
sediment transport equations are not applicable to situations with submerged vegetation. A laboratory experiment was
carried out in which flow, vegetation, and sediment transport were measured in an open channel model with a 240 cm
long section of 50 cm high x 50cm width with submerged vege-tation in a sand bed. Measured data from various
vegetation density and height were analyzed to obtain estimates of the trapping efficiency. Results show an increment of
the trapping efficiency with 86.7% and 94.2% reduction in sediment concentration compared to a case without
vegetation. |
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