On 08/01/2018 03:34 PM, RAJAT ARORA wrote:
If I understand correctly, I dont think that will work. The reason is
because of the Dirichlet boundary conditions, the value of the rhs at those
nodes is unknown until you solve for the system.
I think it's unclear to me what exactly you want in these entries. What you
suggest here is that in entry 'i' of a rhs vector (where 'i' is a boundary
DoF) you want the correct value U_i of the solution at this node.
But in general, the 'i'th entry of the rhs vector (for any other 'i') contains
the integral
rhs_i = \int \phi_i(x) f(x) dx
So can you describe, in mathematical terms, what exactly you are looking for?
Or, maybe even better, what you want to do with this information?
Best
W.
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Wolfgang Bangerth email: [email protected]
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