Mat-1.3656 Seminar on
numerical analysis and computational science
Monday, Dec 2, 2013, room M233 at 14.15, Eirola & Stenberg
Antti Niemi, Aalto"
On quadrilateral least-squares and DPG finite element methods
Least-squares finite element methods for first-order formulations of the Poisson
equation suffer from degradation of convergence order on quadrilateral
meshes as compared to rectangular meshes for some standard finite
element approximations of H(div). We show how the primal DPG formulation can be used to recover the order.