FLOW PREDICTIONS IN VEGETATED OPEN CHANNELS
Journal Title: Larhyss Journal - Year 2016, Vol 28, Issue 28
Abstract
Vegetation development in river bed and in the banks, may affect the hydraulic conditions and hydrodynamic behavior of a stream. Understanding flow dynamic within vegetation becomes very important to control floods and the stream ecosystem. The present paper explores the capacity of a model in a twodimensional code Telemac2D, to predict flow characteristics in vegetated open channel. This model adopted a two-layer approach to determine the mean velocity in vegetated flume using vegetation characteristics. The verification of the programmed model capacity was based on comparison between simulations and measured results derived from the experiences of Keramaris Evangelos (2012), Sergio De Felice (2008) and Le Bouteiller and Venditti (2014). These experiments were conducted with submerged vegetation in a rectangular open channel flow to determine the vegetation effects on flow processes. The comparison shows a good agreement between the simulations results and the measured ones in presence of slopes. This programmed model was more accurate in the case of rigid vegetation than flexible vegetation. In general, the new roughness model could be used to predict the effect of vegetation resistance on flow, which is a very important phenomenon to control river floods.
Authors and Affiliations
MORRI M. | Laboratory of Water Sciences and Technology, National Institute of Agronomy of Tunisia, University of Carthage, Tunis, Tunisia, SOUALMIA A. | Laboratory of Water Sciences and Technology, National Institute of Agronomy of Tunisia, University of Carthage, Tunis, Tunisia, BELLEUDY P. | Laboratory of Transfers in Hydrology and Environment, University Alpes. Grenoble, France
Keywords
Related Articles
- EP ID EP15251
- DOI -
- Views 361
- Downloads 16
EFFECTS OF AGRICULTURAL PRACTICES ON THE POLLUTION OF SURFACE WATER IN BENIN REPUBLIC
The contamination of surface and groundwater in a watershed is mainly due to poor agricultural practices. These include excessive use of fertilizers for high yields, irrigation practices and the use of pesticides. Thes...
ANALYSE STATISTIQUE DU REGIME HYDROLOGIQUE SUR LA PLAINE DE MEJJATE ET SA BORDURE OCCIDENTALE, (MAROC)
Le régime des oueds est très irrégulier durant l’année, leur débit reste faible avec un maximum aux mois de mars et avril, aux mois d’été les oueds sont pratiquement à sec. Les corrélations débits/débit...
DIAGNOSTIC DE LA QUALITÉ DES EAUX PLUVIALES DES TOITURES EN VUE DE LEUR RÉUTILISATION PAYSAGÈRE: CAS D’UN ÉTABLISSEMENT D’ENSEIGNEMENT PUBLIC À CASABLANCA (MAROC)
This study enters in the use recoverable rainwater approach as an alternative water resource of drinking water Indeed, the collection and reuse of rainwater can help to fill the water deficit and relieves pressure on w...
ANALYSE GÉOSTATISTIQUE DU COEFFICIENT D’EMMAGASINEMENT DES AQUIFÈRES FISSURÉS DU CENTRE-EST DE LA CÔTE D’IVOIRE STATISTICAL ANALYSIS OF EMMAGASINEMENT FACTOR OF CRACKED AQUIFER OF THE CENTRAL EAST OF IVORY COAST
The study was carried out in the Center-Eastern of Ivory Coast specifically in the departments of M'bahiakro, Dimbokro and Daoukro. This work is aimed at analyzing the hydrodynamic properties specifically the aquifer s...
EFFECT OF SUBSURFACE DRIP IRRIGATION SYSTEM DEPTH ON SOIL WATER CONTENT DISTRIBUTION AT DIFFERENT DEPTHS AND DIFFERENT TIMES AFTER IRRIGATION
To properly manage subsurface drip irrigation (SDI), and increase the efficiency of the water use while reducing water losses due to evaporation, the precise distribution of water around the emitters must be known. In...