[en] Aerated flow over stepped chutes is principally studied on laboratory models.
Consequently, the obtained design relations have a limited field of application. In order to
propose a more general description of the flow, a quasi-2D numerical model is developed.
The fluid is considered as an air-water mixture governed by the shallow-water equations.
Moreover, a transport equation for air concentration represents the self-aeration of the flow
and a coefficient of uneven vertical velocity distribution integrates indirectly the turbulent
structures. The paper includes a brief description of the flow behaviour, the quasi-2D model
equations, and a comparison of the numerical results with the measured flow characteristics in
a 30° stepped flume.
Disciplines :
Civil engineering
Author, co-author :
André, Stéphanie
Dewals, Benjamin ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)
Pirotton, Michel ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)
Schleiss, Anton
Language :
English
Title :
Quasi 2D-numerical model of aerated flow over stepped chutes
