We want to calculate the velocity
and pressure
on a domain
solving
the Darcy flux problem
 |
(107) |
with the boundary conditions
 |
(108) |
where
and
are a partition of the boundary of
with
non empty,
is the outer normal field of the boundary of
,
and
are given functions on
,
and
are given source terms and
is the given permability. We assume that
is symmetric (which is not really required) and positive definite, i.e there are positive constants
and
wich are independent from the location in
such that
 |
(109) |
for all
.
Subsections
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