Dellinger G., Guiot L., Pujol Leo, Lawniczak F., Francois P., Finaud-Guyot P., Vazquez J., Garambois P. A. (2025). Assessing 3D and 2D hydrodynamic models for urban flood simulations : a district scale analysis with experimental street-level discharge, height and velocity. Urban Water Journal, [Early access], p. [27 p.]. ISSN 1573-062X.
Titre du document
Assessing 3D and 2D hydrodynamic models for urban flood simulations : a district scale analysis with experimental street-level discharge, height and velocity
Dellinger G., Guiot L., Pujol Leo, Lawniczak F., Francois P., Finaud-Guyot P., Vazquez J., Garambois P. A.
Source
Urban Water Journal, 2025,
[Early access], p. [27 p.] ISSN 1573-062X
Urban flood modeling is essential for understanding physical phenomena and enhancing flood forecasting. The relevance of these numerical tools must be assessed with flow measurements which are sparse for real floods. This article assesses the capability of state-of-the-art 2D (with or without the k-epsilon turbulence model) and 3D (with the k-omega SST turbulence model) numerical models in reproducing the characteristics of urban flood flows within a realistic street network using an experimental dataset. The results show that all models can predict the flow discharge distribution and flow depths inside the district. The 3D model is always slightly more accurate, especially in zones where the flow is strongly perturbed. The comparison of numerical and experimental velocity profiles across streets highlights the need for a turbulence model to represent recirculation areas of finite length after crossroads and obtain a more realistic velocity field and water elevation profile.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020]
;
Hydrologie [062]
;
Urbanisation et sociétés urbaines [102]
;
Télédétection [126]
