Ciegis, RaimondasStarikovicius, VadimasBugajev, AndrejCarretero Pérez, JesúsGarcía Blas, JavierBarbosa, JorgeMorla, RicardoUniversidad Carlos III de Madrid. Computer Architecture, Communications and Systems Group (ARCOS)2015-11-112015-11-112014-11Carretero Pérez, Jesús; et.al. (eds.). (2014) Proceedings of the First International Workshop on Sustainable Ultrascale Computing Systems (NESUS 2014): Porto, Portugal. Universidad Carlos III de Madrid, pp. 43-46.978-84-617-2251-8https://hdl.handle.net/10016/21975Proceedings of: First International Workshop on Sustainable Ultrascale Computing Systems (NESUS 2014). Porto (Portugal), August 27-28, 2014.In this work, we study the efficiency of the OpenFOAM-based parallel solver for the heat conduction in electrical power cables. The 2D benchmark problem with three cables is used for our numerical tests. We study and compare the efficiency of conjugate gradient solver with diagonal incomplete Cholesky (DIC) preconditioner and generalized geometric algebraic multigrid solver (GAMG), which is available in Open- FOAM. The convergence and parallel scalability of the solvers are presented and analyzed. Parallel numerical tests are performed on the cluster of multicore computers.4application/pdfengOpenFOAMParallel algorithmsDomain decompositionPreconditionerMultigridconference paperInformáticaopen access4346Proceedings of the First International Workshop on Sustainable Ultrascale Computing Systems (NESUS 2014): Porto, Portugal