Abstract
A FETI-DP algorithm is proposed for solving the system of linear equations arising from the mixed finite element approximations of a three dimensional saddle problem. A preconditioned conjugate gradient method is used in the algorithm with either a lumped or a Dirichlet preconditioner, and scalable convergence rates are proved without a divergence free condition for the coarse space. Numerical experiments of solving a three-dimensional incompressible Stokes problem demonstrate the performance of the proposed algorithm.
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References
J. Li, A Dual-Primal FETI method for incompressible Stokes equations. Numer. Math. 102, 257–275 (2005)
J. Li, X. Tu, A nonoverlapping domain decomposition method for incompressible Stokes equations with continuous pressures. SIAM J. Numer. Anal. 51(2), 1235–1253 (2013)
J. Li, O.B. Widlund, BDDC algorithms for incompressible Stokes equations. SIAM J. Numer. Anal. 44(6), 2432–2455 (2006)
L.F. Pavarino, O.B. Widlund, Balancing Neumann-Neumann methods for incompressible Stokes equations. Comm. Pure Appl. Math. 55(3), 302–335 (2002)
A. Toselli, O.B. Widlund, in Domain Decomposition Methods - Algorithms and Theory, Springer Series in Computational Mathematics, vol. 34 (Springer, Berlin-Heidelberg-New York, 2005)
X. Tu, J. Li, A FETI-DP algorithm for incompressible stokes equations with continuous pressures, in Proceedings of the 21th Domain International Conference on Domain Decomposition Methods, 2012
X. Tu, J. Li, A unified dual-primal finite element tearing and interconnecting approach for incompressible Stokes equations. Int. J. Numer. Methods Eng. 94(2), 128–149 (2013)
X. Tu, J. Li, A FETI-DP type domain decomposition algorithm for three dimensional incompressible Stokes equations. SIAM J. Numer. Anal. 53(2), 720–742 (2015)
Acknowledgements
This work was supported in part by National Science Foundation Contracts No. DMS-1115759 and DMS-1419069.
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Tu, X., Li, J. (2016). A FETI-DP Algorithm for Saddle Point Problems in Three Dimensions. In: Dickopf, T., Gander, M., Halpern, L., Krause, R., Pavarino, L. (eds) Domain Decomposition Methods in Science and Engineering XXII. Lecture Notes in Computational Science and Engineering, vol 104. Springer, Cham. https://doi.org/10.1007/978-3-319-18827-0_32
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DOI: https://doi.org/10.1007/978-3-319-18827-0_32
Publisher Name: Springer, Cham
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