Mat-1.3656 Seminar on numerical analysis and computational science

Monday, Nov 26, 2012, room U322 at 14.15, Eirola & Stenberg

Benjamin Ganis, The University of Texas at Austin
Efficient Domain Decomposition Algorithms for Nonlinear Flow Through Porous Media

The Mortar Mixed Finite Element Method is a useful mathematical framework for coupling multiple scales, physics, and numerics. It can also be a convenient mechanism for parallel programming, but in the case of nonlinear model problems, specialized algorithms are needed to obtain good parallel scalability. I will discuss two techniques developed to reduce computational runtime of the mortar method in the nonlinear case: The Frozen Jacobian Preconditioner, and The Global Jacobian Algorithm.