Loading...
Drag coefficient modelling study for flexible vegetation in open channel flow
Hussain, Awesar Hanmaiahgari, P.R.
Hussain, Awesar
Hanmaiahgari, P.R.
Publication Date
2018-11
End of Embargo
Supervisor
Rights
Peer-Reviewed
No
Open Access status
closedAccess
Accepted for publication
2018-11-10
Institution
Department
Awarded
Embargo end date
Additional title
Abstract
Vegetation remains to be an important factor that can hinder the river flow. It needs innovative management scheme, in order
to adapt these changes and ensure sustainability of their multiple usages. Vegetation plays an important role in floods and
droughts adaptation within river system to alleviate any flood that may propagates from river to its surrounding. Vegetation within
river can also retard its flow to cause building-up of deposition, and further adding to uncertainty of water use under extreme
droughts. Due to these, it is important to study and understand vegetation drag behaviour toward flow in order to prevent flood
risk and water security with hydrological drought in the basin and any other negative impact caused by it. In this study, an
analytical approach for river flooding has been studied by improved representation of drag coefficient CD in flow velocity
distribution modelling. The analysis of flow parameters, i.e. Reynolds number, on the drag coefficient CD has been conducted.
The presented model has been used and analysed in open channel flows with flexible vegetation. In modelling, the flexible
vegetated channel layers were divided into vegetation, top of vegetation and water layer zones in the model. The balance of
forces for each layer has been established by validation using different reported measured data. The modelling results showed
reasonably corresponding prediction of velocity profile in flows with flexible vegetation.
Version
No full-text in the repository
Citation
Hussain A, Pu JH and Hanmaiahgari PR (2018) Drag coefficient modelling study for flexible vegetation in open channel flow. At: Spain Water 2018 Conference: Adapting river management in an era of change. 15 Nov 2018, Madrid, Spain.
Link to publisher’s version
Link to published version
Link to Version of Record
Type
Conference paper