Author(s): Nicolas Riviere; Cai Wei; Gislain Lipeme Kouyi; Adrien Momplot; Emmanuel Mignot
Linked Author(s):
Keywords: Mixing; Confluence; PH-meter; Numerical calculation; Secondary currents
Abstract: The work deals with the mixing of scalars within open-channel confluences. Experiments are performed in a 90°confluence of equally wide, rectangular, horizontal channels with a high branch to upstream momentum ratio. A new method, based on p H measurement, provides 3D concentration fields throughout the flow and permits to work in closedloop without wasting water. The measurements exhibit a rapid mixing, enhanced by the presence of large-scale secondary currents. Operational numerical computations appear to be in fair agreement with the measurements and permit to gain information on the complex measured and computed 3D concentration field processes.
Year: 2015