Dellinger G. auteur aut IRD Guiot L. auteur aut IRD Pujol Leo auteur aut IRD Lawniczak F. auteur aut IRD Francois P. auteur aut IRD Finaud-Guyot P. auteur aut IRD Vazquez J. auteur aut IRD Garambois P. A. auteur aut IRD text journalArticle eng text/pdf born digital access 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. specialized Urban flood ICube experimental dataset numerical modeling benchmark of hydrodynamic models 062 020 126 102 [Early access] [27 ] 2025 1573-062X https://www.documentation.ird.fr/hor/fdi:010094849 10.1080/1573062x.2025.2531460 1573-062X [F B010094849] https://www.documentation.ird.fr/hor/fdi:010094849 https://www.documentation.ird.fr/intranet/publi/2025-09/010094849.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2025-09-24 2025-11-04 fdi:010094849 fre