Bogaers, Alfred EJKok, SReddy, BDFranz, T2014-11-112014-11-112014-09Bogaers, A.E.J, Kok, S, Reddy, B.D and Franz, T. 2014. Quasi-Newton methods for implicit black-box FSI coupling. Computer Methods in Applied Mechanics and Engineering, vol. 279, pp 113-1320045-7825http://ac.els-cdn.com/S0045782514002199/1-s2.0-S0045782514002199-main.pdf?_tid=1b35ad0a-68c7-11e4-91e8-00000aacb35d&acdnat=1415616689_fd75b2326ee84044a2ef685035520028http://hdl.handle.net/10204/7758Copyright: 2014 Elsevier. This is the pre-print. The definitive version is published in Computer Methods in Applied Mechanics and Engineering, vol. 279, pp 113-132In this paper we introduce a new multi-vector update quasi-Newton (MVQN) method for implicit coupling of partitioned, transient FSI solvers. The new quasi-Newton method facilitates the use of 'black-box' field solvers and under certain circumstances can be monstrated to provide Newton-like convergence behaviour for strongly coupled FSI benchmark problems. We demonstrate the superior convergence behaviour and robust nature of the MVQN method compared to other well known quasi-Newton coupling schemes, including the least squares reduced order modelling (IBQN-LS) scheme, the classical rank-1 update Broyden's method and fixed point iterations with dynamic relaxation. The quasi-Newton methods are analysed on a suite of strongly coupled FSI problems, including but not limited to, internal, incompressible flow through a flexible tube where the solid density is an order of magnitude lower than the fluid density.enFluid-structure interactionsPartitioned solverBlack-box solverQuasi-Newton methodsImplicit couplingArticleBogaers, A. E., Kok, S., Reddy, B., & Franz, T. (2014). Quasi-Newton methods for implicit black-box FSI coupling. http://hdl.handle.net/10204/7758Bogaers, Alfred EJ, S Kok, BD Reddy, and T Franz "Quasi-Newton methods for implicit black-box FSI coupling." (2014) http://hdl.handle.net/10204/7758Bogaers AE, Kok S, Reddy B, Franz T. Quasi-Newton methods for implicit black-box FSI coupling. 2014; http://hdl.handle.net/10204/7758.TY - Article AU - Bogaers, Alfred EJ AU - Kok, S AU - Reddy, BD AU - Franz, T AB - In this paper we introduce a new multi-vector update quasi-Newton (MVQN) method for implicit coupling of partitioned, transient FSI solvers. The new quasi-Newton method facilitates the use of 'black-box' field solvers and under certain circumstances can be monstrated to provide Newton-like convergence behaviour for strongly coupled FSI benchmark problems. We demonstrate the superior convergence behaviour and robust nature of the MVQN method compared to other well known quasi-Newton coupling schemes, including the least squares reduced order modelling (IBQN-LS) scheme, the classical rank-1 update Broyden's method and fixed point iterations with dynamic relaxation. The quasi-Newton methods are analysed on a suite of strongly coupled FSI problems, including but not limited to, internal, incompressible flow through a flexible tube where the solid density is an order of magnitude lower than the fluid density. DA - 2014-09 DB - ResearchSpace DP - CSIR KW - Fluid-structure interactions KW - Partitioned solver KW - Black-box solver KW - Quasi-Newton methods KW - Implicit coupling LK - https://researchspace.csir.co.za PY - 2014 SM - 0045-7825 T1 - Quasi-Newton methods for implicit black-box FSI coupling TI - Quasi-Newton methods for implicit black-box FSI coupling UR - http://hdl.handle.net/10204/7758 ER -