Proceedings of the International Conference on Chemical, Material and Food Engineering

Upstream Flow Characteristics Influenced by Gap Backwater in Wide and Narrow Alternated Channels in Mountainous Areas

Authors
Hu Lin, Shuting Miao, Yun Zeng
Corresponding Author
Hu Lin
Available Online July 2015.
DOI
10.2991/cmfe-15.2015.112How to use a DOI?
Keywords
wide and narrow alternated channel; backwater; Velocity distribution; bed shear stress; three dimensional flow field
Abstract

This paper chooses the wide and narrow alternated channel in upstream of Baoxing River as the research object, establishes a three-dimensional flow calculation model and studies the effects of gap backwater on flow characteristics of the water in upstream channel under different conditions. The results show that there is backflow along both sides of the mainstream in upstream of gap because of the water-resistance effects of gap. With the increase of flow rate, backflow presses the mainstream, so that cross-sectional velocity distribution in wide section becomes more uniform; at the section not affected by the backwater, as the flow increases, the bed shear stress increases, and the peak is distributed in the middle of the channel region; when the flow rate further increases, under the effect of the backflow and the backwater, the bed shear stress at the middle region of wide section tends to decrease first and then increase. And velocity and bed shear stress distribution in the cross section has significant peaks within a certain flow range.

Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the International Conference on Chemical, Material and Food Engineering
Series
Advances in Engineering Research
Publication Date
July 2015
ISBN
978-94-62520-93-6
ISSN
2352-5401
DOI
10.2991/cmfe-15.2015.112How to use a DOI?
Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Hu Lin
AU  - Shuting Miao
AU  - Yun Zeng
PY  - 2015/07
DA  - 2015/07
TI  - Upstream Flow Characteristics Influenced by Gap Backwater in Wide and Narrow Alternated Channels in Mountainous Areas
BT  - Proceedings of the International Conference on Chemical, Material and Food Engineering
PB  - Atlantis Press
SP  - 482
EP  - 484
SN  - 2352-5401
UR  - https://doi.org/10.2991/cmfe-15.2015.112
DO  - 10.2991/cmfe-15.2015.112
ID  - Lin2015/07
ER  -