Dear FiPy users --
This is a simple example of how and why fipy may fail to solve a
steady advection diffusion problem, and how solving the transient
problem can reduce the error. I also found something that was a
surprise -- the "initial" condition of a steady problem can affect
th
Dear all -- in a bit I am going to post a little idealized
advection/diffusion problem to give an idea of how some of these errors in
steady solutions arise, and how iterating in time helps. It will be much
more basic then this work, but you might find it helpful. It was very
helpful for me in figu
Thanks for the reply. Those are very useful suggestions. I have some new
findings which may help shedding some light on this problem.
I have added TransientTerm and tried to see how the solution is developed
over time. I also remove the datamin and datamax input on the viewer, so
that I can see th
Hello,
We have a specific question about how a solver helps in accelerating
convergence of a loosely coupled system of PDEs.
Due to the fundamentally different properties/behaviour/geometry, we have a
loosely coupled system of 8 PDEs defined along 5 different meshes, with data
manually copied
On Wed, Sep 14, 2016 at 7:52 PM, Guyer, Jonathan E. Dr. (Fed)
wrote:
>
> I don't know offhand. With a Péclet number of 100, your problem is almost
> completely hyperbolic, which FiPy (and cell-centered Finite Volume) isn't
> very good at. Daniel knows more about this and may have some suggestion
