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Variable Bounding #2999

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friedmud opened this issue Apr 26, 2014 · 1 comment · Fixed by #14136
Closed

Variable Bounding #2999

friedmud opened this issue Apr 26, 2014 · 1 comment · Fixed by #14136
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C: Framework P: minor A defect that does not affect the accuracy of results. T: task An enhancement to the software.

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@friedmud
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@WilkAndy added a cool new capability for bounding one variable by another. It will definitely hurt nonlinear convergence... but if you really need to enforce this then this will work.

We should think about making it a "real" MOOSE capability... maybe with a new System or an off-shoot of Dampers...

Here's his PR about this: #2952
@WilkAndy
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Bounding has also been used by Ben S in FrictionalContactProblem

One day i hope PETsc will be able to do this in a similar way to their VI solvers.

@lindsayad lindsayad changed the title Solution Modification For Bounding Variable Bounding Oct 9, 2019
lindsayad added a commit that referenced this issue Oct 9, 2019
@lindsayad
Demonstrate bound constraint enforcement using nodal kernels
a49f22e 
Refs #2999
lindsayad added a commit that referenced this issue Oct 9, 2019
@lindsayad
Add upper bound test
fabe984 
Refs #2999
lindsayad added a commit to lindsayad/moose that referenced this issue Oct 10, 2019
@lindsayad
Demonstrate bounds enforcement using vinewtonrsls
4fa7b3b 
Closes idaholab#2999
@lindsayad lindsayad mentioned this issue Oct 10, 2019
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C: Framework P: minor A defect that does not affect the accuracy of results. T: task An enhancement to the software.
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Variable Bounding with PETSc VI lindsayad/moose
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@friedmud @WilkAndy