View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0002234 | OpenFOAM | Patch | public | 2016-09-04 19:48 | 2016-09-06 12:58 |
| Reporter | MattijsJ | Assigned To | henry | ||
| Priority | low | Severity | minor | Reproducibility | always |
| Status | resolved | Resolution | fixed | ||
| Platform | GNU/Linux | OS | OpenSuSE | OS Version | 13.2 |
| Product Version | dev | ||||
| Fixed in Version | dev | ||||
| Summary | 0002234: algebraicPairGAMGAgglomeration agglomerates based on upper coefficients only | ||||
| Description | it does agglomerate(mesh, mag(matrix.upper())); attached a fix for if asymmetric matrices. | ||||
| Tags | No tags attached. | ||||
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algebraicPairGAMGAgglomeration.C (2,144 bytes) |
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Why use the max of the upper and lower coefficient? > max(mag(matrix.upper()), mag(matrix.lower())) What about using the sum: mag(matrix.upper()) + mag(matrix.lower()) |
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From what I can see in the literature the strength of connections is taken as the max, e.g. from wissrech.ins.uni-bonn.de/research/pub/metsch/emg-2005.ps.gz "Also note that, with this defini- tion of strength, it is possible that a point i strongly depends on j, but point j only weakly depends on i, even though A is symmetric" |
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Resolved by commit 4232f90093b87323bd3d96d9fab7b209f19ed1db |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2016-09-04 19:48 | MattijsJ | New Issue | |
| 2016-09-04 19:48 | MattijsJ | File Added: algebraicPairGAMGAgglomeration.C | |
| 2016-09-04 21:13 | henry | Note Added: 0006822 | |
| 2016-09-06 12:46 | MattijsJ | Note Added: 0006833 | |
| 2016-09-06 12:58 | henry | Assigned To | => henry |
| 2016-09-06 12:58 | henry | Status | new => resolved |
| 2016-09-06 12:58 | henry | Resolution | open => fixed |
| 2016-09-06 12:58 | henry | Fixed in Version | => dev |
| 2016-09-06 12:58 | henry | Note Added: 0006835 |
