Efficient hydraulic numerical modeling with multiblock grids and linked models

In the field of numerical hydraulic engineering, the size of the simulations is one of the current challenges to overcome in order to be able to consider with sufficient accuracy the large areas involved in practical applications. In this scope, the linking in the same computational domain of different solvers, each one used in the part of the simulation where its characteristics are most suitable, opens the door to huge modeling capacities. Such optimized hydraulic numerical modeling is presented in this paper with a multiblock multimodel 2D solver and its linking to a 1D model. After a description of the solvers, with emphasis on the linking procedures, theoretical test cases and real applications are presented.