Discussion Forum

Hi all,

I am asking for help concerning the following simulation, to be run in two stages:

Stage A: first, I solve a 2-dim steady state PDE problem, finding a solution f(x,y).
Basically, f is the solution to an eigenvalue problem.

Stage B: I wish to slightly perturb f: f -->f1 = f + df, where df = df(x,y) is a known function.
Then, f1 is used as initial condition for the same PDE problem of stage A, but now
I run the simulation as time-dependent.

My problem is at the level of stage B: f, and hence f1, comes as a numerical solution, and
has no obvious analytical fit. How can I implement such a numerical function as initial condition ?


I am using COMSOL v3.5 (Not 3.5a !)

Thanks


F. Sattin