I am modelling the human cardiovascular system and solve equations similar to the windkessel equation in the example: # The 5-element WK formulation, also 4-element parallel for Ls = 0.0 function wk5(dP, P, params, t) #= The 5-Element WK with serial L …

Based on a reply on github stating that the problem is with how the Dual handles mod and rem, I tried floor division to get the remainder, and that works: #+begin_src julia function f(t) times = t ÷ 1 t = t - times sin(pi * 2 * (t ))^2 * (t < 0.5) end #+end_src #+RESULTS: : f (generic …

ODE solver fails with ForwardDiff, but works with central differences for first derivative of an input function

Specific Domains Numerics

ChrisRackauckas June 16, 2021, 6:07pm 2

First try ForwardDiff with NaN-safe mode and see if that helps:

https://juliadiff.org/ForwardDiff.jl/latest/user/advanced.html#Fixing-NaN/Inf-Issues-1

1 Like

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ODE solver fails with ForwardDiff, but works with central differences for first derivative of an input function

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