Modelling Weirs in Two-Dimensional Shallow Water Models

2D models based on the shallow water equations are widely used in river hydraulics. However, these models can present deficiencies in those cases in which their intrinsic hypotheses are not fulfilled. One of these cases is in the presence of weirs. In this work we present an experimental dataset including 194 experiments in nine different weirs. The experimental data are compared to the numerical results obtained with a 2D shallow water model in order to quantify the discrepancies that exist due to the non-fulfillment of the hydrostatic pressure hypotheses. The experimental dataset presented can be used for the validation of other modelling approaches.

Automated summary

The study utilized 2D models based on the shallow water equations for simulating flow through weirs and presented an experimental dataset consisting of 194 experiments. A comparison between the experimental data and numerical results was conducted to quantify discrepancies due to non-fulfillment of the hydrostatic pressure hypotheses. The experimental dataset provided can be valuable for validating other modeling approaches.