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Is there any way of solving singular problems with amgcl? For example, a simple FD approximation of the Poisson problem with pure Neumann bc reads:
[-1 1 .... ]
[1 -2 1 .... ]
[. 1 -2 1 ...]
...
…
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```
spack install petsc~double
```
produces
```
==> hypre is already installed in /home/jiseung/spack/opt/spack/linux-rhel7-x86_64/gcc-4.8.5/hypre-2.11.2-iqu6vzcbd2dn4f5hcq4b7y2ogsl3m7ij
==> su…
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Craig Lage at UC Davis has developed a Poisson equation solver that computes the distortion of the pixel edges as the electrons get collected in the CCD pixels. In the DESC Hack day today, we made som…
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Let's put here all feature requests regarding to elasticity solver (this is a good start of writing features.md)
- [x] Linear and quadratic elements
- [x] Finite displacement
- [ ] Non-linear material…
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Hi,
I'm looking to solve a linear system which is algebraically similar to the Stokes problem, in the sense that I have a matrix in the following block form:
```
[ A B ]
[ B^T 0 ]
```
…
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When installing PETSc with intel compiler 17.0.4 and intel-mpi 2017.3 the installation fails with:
```
==> Error: ProcessError: Command exited with status 1:
'./configure' '--prefix=/blues/gpfs…
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Hi all,
I have encountered an error while running a 2D simulation on SMILEIv3.0.
I have a population of warm electrons and ions in the center of a 2D box. They are left to freely expand. Halfway thr…
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Reported by Chris Eldred
The following code for the linear shallow water equations gives a smooth solution for `meshorder = 1`, `celltype = 'quad'` or for `meshorder = 2`, `celltype = 'tri'`. Howe…
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Hi,
Thank you for sharing this nice library.
I have three questions here:
1. Is it possible for mfem to do CFD?
2. I know that spectral-element/hp method commonly uses GLL collection nodes. Is it…
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For testing, we should solve the poisson equation using a Fourier transform. That will at least ensure that the initial conditions make sense.