Author(s): M. Gebhardt; U. Pfrommer; T. Rudolph; C. Thorenz

Linked Author(s): Carsten Thorenz

Keywords: Inflatable gate; Weir; Energy dissipation; Stilling basin; Hydraulic jump; Low Froude number

Abstract: Inflatable gates have a number of advantages when compared with standard steel gates. In case of flood the rubber membrane is deflated to a flat structure and placed on the weir sill. This paper deals with the energy dissipation at inflated gates, in particular the influence of the weir sill on the design of the stilling basin with respect to the described boundary conditions. Numerical investigations were carried out using OpenFOAM (Open source Field Operation and Manipulation). Additionally, experiments were performed in a physical model. The hydraulic characteristic of low Froude hydraulic jumps, turbulent flow structures, and the energy dissipation mechanisms during overflow are presented and discussed.

DOI: https://doi.org/10.15142/T3JD26

Year: 2018