Komail Rafiei Dastjerdi - Alumnus, the University of Tehran, Tehran, Iran
Masoud Montazeri Namin - Associate professor, the University of Tehran, Tehran, Iran

NAMROOD DamBreak coupled 1D-2D and 2D modelling approaches are, separately, implemented for simulation of Tous dam-break flood and the outcomes are juxtaposed. The Spanish dam’s outflow hydrograph is used as upstream boundary condition and HLL as the preferred numerical method, assuming dry bed as initial condition. Both the models operate on basically the same unstructured triangular meshes. Results comparison demonstrates that the 1D-2D model predicts the water depth within the river stream far better than the 2D model, whereas for the flooded city, Sumacárcel- which is laterally flooded- no meaningful difference between these two models is seen.

coupled 1D-2D, shock capturing, urban flooding, dam break model