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Feature request: BVP-DAE support #76

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JulianUlrich opened this issue Jul 6, 2022 · 2 comments · May be fixed by #217
Open

Feature request: BVP-DAE support #76

JulianUlrich opened this issue Jul 6, 2022 · 2 comments · May be fixed by #217

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@JulianUlrich
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It would be nice, if solving of boundary value problems for implicit or semi-explicit DAEs was supported. Such solvers exist in FORTRAN (COLDAE).
@ChrisRackauckas
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Agreed. First, we should add mass matrices to the BVProblem specification. It needs a BVPFunction, like the ODEFunciton, etc. to add such Jacobian and other metafunctions. That would get mass_matrix, so then linearly implicit BVP DAEs can be specified. Then yes we need to add that to the MIRK method.

@JulianUlrich
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Nice, i am looking forward to it. I am surprised this has not been implemented in any commercial tool...

@ErikQQY ErikQQY linked a pull request Oct 14, 2024 that will close this issue
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Add BVDAE solvers ErikQQY/BoundaryValueDiffEq.jl
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@ChrisRackauckas @JulianUlrich