Vertical Velocity Distribution in Open-Channel Flow with Rigid Vegetation
Joint Authors
Zhu, Changjun
Hao, Wenlong
Chang, Xiangping
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-04-16
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
In order to experimentally investigate the effects of rigid vegetation on the characteristics of flow, the vegetations were modeled by rigid cylindrical rod.
Flow field is measured under the conditions of submerged rigid rod in flume with single layer and double layer vegetations.
Experiments were performed for various spacings of the rigid rods.
The vegetation models were aligned with the approaching flow in a rectangular channel.
Vertical distributions of time-averaged velocity at various streamwise distances were evaluated using an acoustic Doppler velocimeter (ADV).
The results indicate that, in submerged conditions, it is difficult to described velocity distribution along the entire depth using unified function.
The characteristic of vertical distribution of longitudinal velocity is the presence of inflection.
Under the inflection, the line is convex and groove above inflection.
The interaction of high and low momentum fluids causes the flow to fold and creates strong vortices within each mixing layer.
Understanding the flow phenomena in the area surrounding the tall vegetation, especially in the downstream region, is very important when modeling or studying the riparian environment.
ADV measures of rigid vegetation distribution of the flow velocity field can give people a new understanding.
American Psychological Association (APA)
Zhu, Changjun& Hao, Wenlong& Chang, Xiangping. 2014. Vertical Velocity Distribution in Open-Channel Flow with Rigid Vegetation. The Scientific World Journal،Vol. 2014, no. 2014, pp.1-6.
https://search.emarefa.net/detail/BIM-1048470
Modern Language Association (MLA)
Zhu, Changjun…[et al.]. Vertical Velocity Distribution in Open-Channel Flow with Rigid Vegetation. The Scientific World Journal No. 2014 (2014), pp.1-6.
https://search.emarefa.net/detail/BIM-1048470
American Medical Association (AMA)
Zhu, Changjun& Hao, Wenlong& Chang, Xiangping. Vertical Velocity Distribution in Open-Channel Flow with Rigid Vegetation. The Scientific World Journal. 2014. Vol. 2014, no. 2014, pp.1-6.
https://search.emarefa.net/detail/BIM-1048470
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1048470