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SimVascular / svZeroDSolver-Archived

A Python lumped-parameter solver for blood flow and pressure in hemodynamic networks
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Non-periodic coronary BCs #43

Closed mrp089 closed 3 years ago

mrp089 commented 3 years ago

Not sure where to where post this issue, so I'll post it here.

@mrp089 I just noticed that the coronary boundary conditions in the 0d text input files that you sent me in a previous comment are not periodic. I think this might be an issue, because in the 0d solver, we always assume that pulsatile boundary conditions are periodic (meaning that the endpoints of the time series are the same).

Originally posted by @JonathanPham in https://github.com/SimVascular/svZeroDSolver/issues/14#issuecomment-885953553

mrp089 commented 3 years ago

@JonathanPham I understand it doesn't make sense to have non-periodic pressures in coronary BCs. Is this a "hard" requirement, i.e., can we not solve a 0D problem with non-periodic BCs? Or is something that doesn't make sense, but isn't too big of an issue in cases the discrepancy between last and first time step is small?

JonathanPham commented 3 years ago

@mrp089 It's not a hard requirement to have periodic BCs. As long as the 0D is performing well against the 3D and 1D results (all using the same non-periodic coronary BCs), it is probably isn't a big issue.