Print Email Facebook Twitter Rosenbrock time integration for unsteady flow simulations Title Rosenbrock time integration for unsteady flow simulations Author Blom, D.S. Bijl, H. Birken, P. Meister, A. Van Zuijlen, A.H. Faculty Aerospace Engineering Department Aerodynamics, Wind Energy & Propulsion Date 2013-06-17 Abstract This contribution compares the efficiency of Rosenbrock time integration schemes with ESDIRK schemes, applicable to unsteady flow and fluid-structure interaction simulations. Compared to non-linear ESDIRK schemes, the linear implicit Rosenbrock-Wanner schemes require subsequent solution of the same linear systems with different right hand sides. By solving the linear systems with the iterative solver GMRES, the preconditioner can be reused for the subsequent stages of the Rosenbrock-Wanner scheme. Unsteady flow simulations show a gain in computational efficiency of approximately factor three to five in comparison with ESDIRK. Subject Rosenbrock time integrationhigher order time integrationunsteady flow simulationsESDIRKRosenbrock-Wanner methods To reference this document use: http://resolver.tudelft.nl/uuid:a9a68452-5a77-431f-8377-7bc57e24d6e7 Publisher CIMNE ISBN 978-84-941407-6-1 Source Coupled Problems 2013: Proceedings of the 5th International Conference on Computational Methods for Coupled Problems in Science and Engineering, Ibiza, Spain, 17-19 June 2013 Part of collection Institutional Repository Document type conference paper Rights (c) 2013 The Author(s) Files PDF Blom_2013.pdf 401.02 KB Close viewer /islandora/object/uuid:a9a68452-5a77-431f-8377-7bc57e24d6e7/datastream/OBJ/view