On Jun 2, 2009, at 1:47 PM, david wende wrote:
Maybe I am missing something here, but in Daniels previous answer
(which
I actually incorporated into the two examples in my posting) he
showed how to have the
flux across a boundary be non-zero and then go to zero.
The line I quoted from Daniel is where he showed you how to do a time-
dependent boundary condition. I don't see this reflected in either of
the scripts you just sent.
I am seeking a way to make the flux INTO the circular section non-
zero and then zero
(like a laser would really heat it up), and then have regular
diffusion "spread" the
heat energy from that heated section into the complete model.
Since that's what a time dependent boundary condition does, I'm
guessing we're not talking about the same thing. If I understand
correctly, you want to simultaneously heat all the cells in a volume
within your solution domain for some initial period, and then stop.
You could do this with a source multiplied by (t < 3). The form of
that source is going to depend on how accurately you want to treat the
absorption of the laser energy. Show us mathematically what you want
it to look like and we'll help you represent it in FiPy.
