Question #155649 on DOLFIN changed:
https://answers.launchpad.net/dolfin/+question/155649
Status: Open => Answered
B. Emek Abali proposed the following answer:
once again Kyle, use an abstract interface for the Newton solver,
class iterate(NonlinearProblem):
def __init__(self, a, L, bc, exter_B):
NonlinearProblem.__init__(self)
self.L = L
self.a = a
self.bc = bc
self.exter = exter_B
def F(self, b, x):
assemble(self.L, tensor=b, exterior_facet_domains=self.exter)
for condition in self.bc: condition.apply(b, x)
def J(self, A, x):
assemble(self.a, tensor=A, exterior_facet_domains=self.exter)
for condition in self.bc: condition.apply(A)
instead of VariationalProblem, how to do is in the website I wrote above,
under viscous flow.
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