[Getdp] Heat equation
yoshin76@libero.it
yoshin76 at libero.it
Wed Dec 18 09:31:50 CET 2002
I'm an italian PhD student and I'm trying to solve the 2D heat equation:
du/dt-div(grad u)=f(u,t) on a volume V
with the Neumann boundary conditions:
(grad u) ° n=0 on S (surface that contain V and n unit vector normal to S)
If i search a steady state for this problem, I need to fix the integral constraint:
int_V(f(u,t)dxdy)=0 (int_V integral over V)
otherwise the temperature u increase without reach an asymptotic value.
In which way can I fix this global constraint in GetDP?
Should I use a GlobalTerm or a GlobaEquation?
Can I you give me an example?
Thanks in advance and best regards,
Fabio Vicini.
Roma, Italy.