On Thu, Dec 4, 2014 at 2:25 PM, Kyle Briton Lawlor klawlor...@gmail.com wrote:
Sorry for a possible notation confusion here, phi in my code is alpha in the
problem description above.
My question:
Have I appropriately translated my problem into FiPy language?
I can't see any obvious
Hi Dan and FiPy,
Thanks for taking a look. I’m not getting any errors after running the code.
The results are sensible. Although I do have to run for a huge value of steps
to reach something that looks sensible. I suppose this is where non-linear
iterations would help? Are there examples of
Please see sweeps under
http://www.ctcms.nist.gov/fipy/documentation/FAQ.html#iterations-timesteps-and-sweeps-oh-my
On Dec 5, 2014, at 1:36 PM, Kyle Briton Lawlor klawlor...@gmail.com wrote:
Hi Dan and FiPy,
Thanks for taking a look. I’m not getting any errors after running the code.
On Nov 20, 2014, at 5:51 PM, Kyle Briton Lawlor klawlor...@gmail.com wrote:
I am now trying to work with Neumann boundary conditions with this diffusion
problem.
I have come across the following implementation of Neumann BC’s:
var.faceGrad.constrain(2 * mesh.faceNormals,
Hi Kyle,
#*Boundary Conditions*
phi.constrain(X,mesh.exteriorFaces)
phi.constrain(X,mesh.interiorFaces)
The above is the problem. You are constraining the internal faces, which
makes no sense in FiPy. I am not even sure how FiPy behaves when that
constraint is added. However, I assume that is
Just to clarify: as far as FiPy is concerned, interiorFaces have a cell on
either side of them, whereas exteriorFaces have a cell on only one side; the
other side is outside the mesh. It doesn't matter whether the mesh has simple
topological connectivity (square, sphere, etc.) or complex
Hi again FiPy,
What is the easiest/most efficient way to make the distinction between the
“outer” exterior faces and the “inner” exterior faces of the annulus?
I would like to enforce to different boundary conditions at the outer and inner
radii.
Can I use the where=() function? Or something
Hey, Kyle.
Given inner radius rI and outer radius rO, perhaps you could do something
like
rMid = 0.5 * (rI + rO)
Xfc, Yfc = mesh.faceCenters
innerFaces = (mesh.exteriorFaces (Xfc**2 + Yfc**2 rMid))
outerFaces = (mesh.exteriorFaces (Xfc**2 + Yfc**2 rMid))
Then constrain using
Hi Ray,
Thanks! Definitely helps :)
Kyle
On Nov 19, 2014, at 6:07 PM, Raymond Smith smit...@mit.edu wrote:
Hey, Kyle.
Given inner radius rI and outer radius rO, perhaps you could do something like
rMid = 0.5 * (rI + rO)
Xfc, Yfc = mesh.faceCenters
innerFaces = (mesh.exteriorFaces
Hello again,
I am trying to solve the diffusion example in a circle with an annular region
instead. I thought this would be a straightforward extension and I’m sure it
is, I am just missing something. The reason I think something is wrong is
because the solutions are looking like this, after
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