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Hydraulic Features of Flow Through Local Non- Submerged Rigid Vegetation in the Y-shaped Confluence Channel
- Source :
- Water, Vol 11, Iss 1, p 146 (2019), Water, Volume 11, Issue 1
- Publication Year :
- 2019
- Publisher :
- MDPI AG, 2019.
-
Abstract
- A laboratory measurement with acoustic Doppler velocimeter (ADV) was used to investigate the flow through a Y-shaped confluence channel partially covered with rigid vegetation on its inner bank. In this study, the flow velocities in cases with and without vegetation were measured by the ADV in a Y-shaped confluence channel. The results clearly showed that the existence of non-submerged rigid plants has changed the internal flow structure. The velocity in the non-vegetated area is greater than in the vegetated area. There is a large exchange of mass and momentum between the vegetated and non-vegetated areas. In addition, due to the presence of vegetation, the high-velocity area moved rapidly to the middle of the non-vegetated area in the vicinity of tributaries, and the secondary flow phenomenon disappeared. The presence of vegetation made the flow in non-vegetated areas more intense. The turbulent kinetic energy of the non-vegetated area was smaller than that of the vegetated area.
- Subjects :
- lcsh:Hydraulic engineering
Geography, Planning and Development
Flow (psychology)
Y-shaped confluence channel
Aquatic Science
Biochemistry
lcsh:Water supply for domestic and industrial purposes
lcsh:TC1-978
Tributary
medicine
Acoustic Doppler velocimetry
Geomorphology
Water Science and Technology
turbulent kinetic energy
lcsh:TD201-500
geography
geography.geographical_feature_category
longitudinal velocity
Internal flow
Secondary flow
non-submerged rigid vegetation
secondary flow
Confluence
Turbulence kinetic energy
medicine.symptom
Vegetation (pathology)
Geology
Subjects
Details
- ISSN :
- 20734441
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- Water
- Accession number :
- edsair.doi.dedup.....197d6ad72bc5f33b534759dbbe8ca021