A finite volume method parallelization for the simulation of free surface shallow water flowsA finite volume method parallelization for the simulation of free surface shallow water flows Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2015-10-252009enWe construct a parallel algorithm, suitable for distributed memory architectures, of an explicit shock-capturing finite volume method for solving the two-dimensional shallow water equations. The finite volume method is based on the very popular approximate Riemann solver of Roe and is extended to second order spatial accuracy by an appropriate TVD technique. The parallel code is applied to distributed memory architectures using domain decomposition techniques and we investigate its performance on a grid computer and on a Distributed Shared Memory supercomputer. The effectiveness of the parallel algorithm is considered for specific benchmark test cases. The performance of the realization measured in terms of execution time and speedup factors reveals the efficiency of the implementation.http://creativecommons.org/licenses/by/4.0/Mathematics and Computers in Simulation79113339-3359 Delis Anargyros Δελης Αναργυρος Mathioudakis Emmanouil Μαθιουδακης Εμμανουηλ Elsevier Shallow water equations Finite volume Domain decomposition Distributed memory parallel architectures Grid computing