SIAM Journal on Numerical Analysis, Vol. 35, No. 2 (Apr., 1998), pp. 692-711 (20 pages) Various sophisticated finite element models for surface water flow based on the shallow water equations exist in ...
The FD= and FDHESSIAN= options specify the use of finite difference approximations of the derivatives. The FD= option specifies that all derivatives are approximated using function evaluations, and ...
The stress-displacement-pressure formulation of the elasticity problem may suffer from two types of numerical instabilities related to the finite element interpolation of the unknowns. The first is ...