Efficient solvers for hybridized three-field mixed finite element coupled poromechanics

02/22/2020
by   Matteo Frigo, et al.
0

We consider a mixed hybrid finite element formulation for coupled poromechanics. A stabilization strategy based on a macro-element approach is advanced to eliminate the spurious pressure modes appearing in undrained/incompressible conditions. The efficient solution of the stabilized mixed hybrid block system is addressed by developing a class of block triangular preconditioners based on a Schur-complement approximation strategy. Robustness, computational efficiency and scalability of the proposed approach are theoretically discussed and tested using challenging benchmark problems on massively parallel architectures.

READ FULL TEXT

Please sign up or login with your details

Forgot password? Click here to reset