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Iber as a tool to analyse flooding scenarios
* 1 , 1 , 2 , 3 , 1
1  Enviromental Physics Laboratory (EPHYSLAB), Universidade de Vigo, Campus As Lagoas s/n, 32004, Orense, Spain;
2  Enviromental and Water Engineering Group, Departamento de Ingeniería Civil, Universidade da Coruña, Campus Elviña s/n, Coruña, España
3  Laboratorio de Informática aplicada, Universidade de Vigo, Campus As Lagoas s/n, 32004, Ourense, Spain;


Abstract: Floods are one of the most dangerous extreme events that can affect people and properties. These events have intensified worldwide over the last decades due to climate change. Therefore, the capability to predict and analyse, in a quick and accurate way, the effects of these floods is of crucial importance to avoid or minimize the hazards associated to them. This task can be accomplished by means of numerical tools as Iber. Iber is a 2-D numerical model, developed by GEAMA (Universidade da Coruña) and Flumen (Universitat Politècnica de Catalunya), that uses the finite volume technique to solve the 2-D Shallow Water Equations in order to obtain the water depth and velocity components of the flow under different scenarios. To assess the capabilities of Iber  a series of test cases have been reproduced following the document “Benchmarking the latest generation of 2D hydraulic modelling packages” published by the non-departmental public body Environment Agency of the U.K. Government. The results show that Iber is a suitable tool to reproduce accurately different flooding scenarios. A new implementation of the model has been developed by EPHYSLAB. This implementation takes advantage of the modern hardware capabilities and provides significant speedups over the original code. The new possibilities offered by a faster code will be studied.

Keywords: Flood, Numerical model, Iber
Comments on this paper
Raquel Nieto
Congratulations for the implementation of this model.

My question is:
what is the improvement respect to the other models?

good job
Orlando Garcia-Feal
Dear Dr Nieto,

thanks for your question.

Iber is a numerical code with a wide range of applications in the field of CFD (Computational Fluid Dynamics): river and estuary hydrodynamics, dam breaks, structures (e.g. bridges, gates and culverts), wind, hazard evaluation, water quality and sediment transport among others. This package also features an user-friendly graphical user interface for pre and post-processing. Also, Spanish administrations are starting to use Iber to define the flooding areas defined in some urban development plans. Finally, Iber is available for free at

As stated in the article, the results are comparable to those obtained by other popular CFD codes. However, Iber lags behind some competitors in terms of simulation speed. We are currently working on this issue by applying parallel computing techniques to achieve better simulation times.

Best regards,