title: New equation for the computation of flow velocity in partially filled pipes arranged in parallel.
abstract: This paper presents a new approach for the computation of flow velocity in pipes arranged in parallel based on an analytic development. The estimation of the flow parameters using existing methods requires trial and error procedures. The assessment of flow velocity is of great importance in flow measurement methods and in the design of drainage networks, among others. In drainage network design, the flow is mostly of free surface type. A new method is developed to eliminate the need for trial methods, where the computation of the flow velocity becomes easy, simple, and direct with zero deviation compared to Manning equation results and other approaches such as that have been considered as the best existing solutions. This research work shows that these approaches lack accuracy and do not cover the entire range of flow surface angles: 0° ≤ θ ≤ 360°.
authors.affiliation: Department of Civil Engineering, Faculty of Sciences & Technology, University of Mohamed Cherif Messaadia, Souk Ahras, Algeria E-mail: Zeghadnia_lotfi@yahoo.fr; Department of Hydraulics, Faculty of Engineering Science, University of Badji-Mokhtar, Annaba, Algeria.
authors.forename: Lotfi
authors.initials: L
authors.lastname: Zeghadnia
authors.affiliation: Department of Hydraulics, Faculty of Engineering Science, University of Badji-Mokhtar, Annaba, Algeria.
authors.forename: Lakhdar
authors.initials: L
authors.lastname: Djemili
authors.affiliation: Department of Hydraulics, Faculty of Engineering Science, University of Elhadj Lakhdar, Batna, Algeria.
authors.forename: Larbi
authors.initials: L
authors.lastname: Houichi
authors.affiliation: Department of Civil Engineering, Faculty of Sciences & Technology, University of Mohamed Cherif Messaadia, Souk Ahras, Algeria E-mail: Zeghadnia_lotfi@yahoo.fr.
authors.forename: Nouredin
authors.initials: N
authors.lastname: Rezgui
mesh_terms: D057914:Agricultural Irrigation; D000465:Algorithms; D004867:Equipment Design; D014872:Water Movements; D014881:Water Supply