Hi all,
Hope all is going well.
Recently, I am trying to solve for an equation like this:
\frac{\partial^2 u}{\partial y \partial z}-\frac{\partial^2 u}{\partial z
\partial y}=\alpha
I tried using the diffusionTerm with anisotropic diffusion coefficient of
the following:
D=[0 0 1
0 0 0
-1 0 0]
But I got the following error:
File "run.py", line 81, in run
solver=solver)
File
"/Library/Python/2.5/site-packages/FiPy-2.0a1-py2.5.egg/fipy/terms/term.py",
line 186, in sweep
self._solveLinearSystem(var, solver, matrix, RHSvector)
File
"/Library/Python/2.5/site-packages/FiPy-2.0a1-py2.5.egg/fipy/terms/term.py",
line 131, in _solveLinearSystem
solver._solve(matrix, array, RHSvector)
File
"/Library/Python/2.5/site-packages/FiPy-2.0a1-py2.5.egg/fipy/solvers/pysparse/linearGMRESSolver.py",
line 69, in _solve
Assor=precon.jacobi(L._getMatrix())
ValueError: diagonal element close to zero
I wonder if there are any ways to work around it. Thank you in advance for
any advice.
Have a nice day!
Regards,
Zhiwen
