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Influence of hydraulic resistance on flow features in an open channel confluence
Creelle, S.; De Mulder, T.; Schindfessel, L.; Van Oyen, T. (2014). Influence of hydraulic resistance on flow features in an open channel confluence, in: 3rd IAHR Europe Congress: book of proceedings, 2014, Porto - Portugal. pp. [1-10
In: (2014). 3rd IAHR Europe Congress: book of proceedings, 2014, Porto - Portugal. IAHR: [s.l.]. ISBN 978-989-96479-2-3. , more

Available in Authors 
Document type: Conference paper

Keywords
    Bed roughness; Hydrodynamics; Numerical models
Author keywords
    Open channel confluence; 3D shallow water equations

Authors  Top 
  • Creelle, S.
  • De Mulder, T., more
  • Schindfessel, L.
  • Van Oyen, T., more

Abstract
    A numerical model based on the 3D shallow water equations is set up for a 90° angle open channel confluence. The model is first calibrated and validated using experimental data by (Shumate, 1998). Then a series of numerical simulations is carried out, systematically increasing the friction coefficient, in order to investigate the impact of hydraulic resistance on the flow features in an open channel confluence. The properties of the separation zone (width and length) are found to be substantially altered by the hydraulic resistance. The hydrodynamic processes are analysed zooming in onto lateral momentum fluxes.

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