National School for Water and Environmental Engineering of Strasbourg ENGEES Fluid and Solid Mechanical Institute IMFS

Strasbourg, France

National School for Water and Environmental Engineering of Strasbourg ENGEES Fluid and Solid Mechanical Institute IMFS

Strasbourg, France

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Isel S.,National School for Water and Environmental Engineering of Strasbourg ENGEES Fluid and Solid Mechanical Institute IMFS | Dufresne M.,National School for Water and Environmental Engineering of Strasbourg ENGEES Fluid and Solid Mechanical Institute IMFS | Bardiaux J.B.,National School for Water and Environmental Engineering of Strasbourg ENGEES Fluid and Solid Mechanical Institute IMFS | Fischer M.,National School for Water and Environmental Engineering of Strasbourg ENGEES Fluid and Solid Mechanical Institute IMFS | Vazquez J.,National School for Water and Environmental Engineering of Strasbourg ENGEES Fluid and Solid Mechanical Institute IMFS
Urban Water Journal | Year: 2014

This article describes a general method to assess discharge-water depth relationships for combined sewer overflow (CSO) chambers. This method is particularly suitable for: complex geometries, unavailable univoc relationship between upstream and downstream flow and complex downstream hydraulic conditions. The methodology presented in this article is based on computational fluid dynamics. Its aim is to propose a relationship between the water depths in the CSO chamber and the overflow discharge. This study focuses on the evaluation and integration of the uncertainties in the determination of the most suitable depth-overflow relationship. Uncertainties related to numerical model, boundary conditions and water depth have been taken into account in order to elaborate water depth-overflow rate relationship. This approach is illustrated through the example of the 'Milan' CSO of Mulhouse city, France. © 2013 © 2013 Taylor & Francis.

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