Abstract: “This paper studies a flow regulation device, whose operation does not fully comply with the theoretical simplifications underlying the usual design standards for this type of structure. In particular, a flow regulation device consisting of two side weirs with a discharge rate very close to the maximum flow coming from upstream is studied on a physical model. The device is located in the pipe of a steep-slope swiss-section sewer, just upstream of a flow measurement section comprising a rectangular-section venturi. The theoretical analysis and tests carried out on the experimental installation in both normal and critical conditions have identified solutions that, despite their specific characteristics, may provide indications of a more general nature.”

Keywords: flow regulation device, side weirs, steep-slope channel, theoretical-experimental testing.