For the representation of a divergence-free vector field defined on a bounded simply connected three-dimensional domain of with a smooth boundary by its curl and its normal component on the boundary, a mixed formulation also involving a vector potential is proposed. The vector fields are discretized with help of curved finite elements that are conforming in H(div) or H(curl). A discrete gauge condition is proposed to assume the uniqueness of the stream function. Optimal error estimates are derived, and a numerical experiment is presented.
@article{hal-00660366,
author = {Dubois, Fran\c cois},
title = {Discrete vector potential representation of a divergence-free vector field in three-dimensional domains: numerical analysis of a model problem},
journal = {HAL},
volume = {1990},
number = {0},
year = {1990},
language = {en},
url = {http://dml.mathdoc.fr/item/hal-00660366}
}
Dubois, François. Discrete vector potential representation of a divergence-free vector field in three-dimensional domains: numerical analysis of a model problem. HAL, Tome 1990 (1990) no. 0, . http://gdmltest.u-ga.fr/item/hal-00660366/