Dear Ahmad, > I have BVP (like laplace eq. with some b.c's) applied in > \omega=[-1,1]x[-1,1], where the internal source ( f ) is applied on a subset > in \omega, [..]
The easiest way to do this is explained for example in step-8: http://dealii.org/developer/doxygen/deal.II/step_8.html#Righthandsidevalues You create a class RightHandSide where you can set the value of the source depending on the coordinates (the Point p in this example) und use that function in the assembly of the right-hand side. Best, Timo -- Timo Heister http://num.math.uni-goettingen.de/~heister _______________________________________________ dealii mailing list http://poisson.dealii.org/mailman/listinfo/dealii
