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How is the nonlinearity being resolved in Ex 16? The diffusion coefficient nonlinearly depends on u, but it seems to be treated more or less explicitly. The Implicit Solve function calls
```
// Solv…
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I would like to raise a fundamental issue for discussion (two specific questions appear at the end). I am eager for comments from @asgeirbirkis, @tobydriscoll, @nickhale, and all others who may have …
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If the Jacobian (decoder not ODE) is not constant, we need to confirm that the correct Jacobian is used in all cases. This would also enable a time-varying Jacobian.
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GridPACK's dynamics simulation consists of a lot of discrete events, such as fault on/off, line tripping, generator/exciter/turbine-governor limiters, relays, etc.. To handle this correctly with the D…
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From #426
> The authors shall describe how the library could be used in non linear cases. In particular, the contact problem given in the first example is indeed non linear.
> Can non uniform c…
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There is something odd with memory allocation during the simulations; often the first iteration of the first time step is much slower than the others, and I think (and callgrind seems to agree) it is …
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TL;DR: IDA won't converge after an algebraic equation switching, due to the fact that Jacobian is only updated once for each step.
Hi,
First of all, thanks for developing and supporting the Diff…
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Hello !
I would like to solve an equation similar to example 9 : d(u)/dt + v.∇u = 0
In this example, the operator to solve (v.∇u) is ConvectionIntegrator(velocity), it uses a velocity determine…
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**Does the current PyNite module support following features?**
- Spring-Tension Only/Compression Only
- Rigid Elements for connection
- Temperature Load Application
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I'm not sure if the issue is in Gurobi.jl, MOI, or EAGO, but I thought I'd ask here first.
I have a small problem in which using GLPK has no issues, but Gurobi reports NaN's. What is extra strange…