 |
Center for Nonlinear Studies |
Multiphysics software often relies on ad-hoc operator splitting methods, largely due to implementation complexity and commitment required to use fully implicit methods. PETSc's new algebraic interfaces for coupling enable maintainable single-physics assembly routines to be reused for semi- or fully-implicit multi-physics with a runtime choice of monolithic or field-split solvers. Runtime choice of a nested matrix format requires no additional memory for field-split and each single-physics block uses the best available matrix format (blocked and/or symmetric). Fully implicit and IMEX time integrators with adaptive error control are also available through a common interface.
Host: Xianzhu Tang, T-5, 665-2141