Heat / diffusion equation with co-ordinate dependent diffusion coefficient

[Eben60]

@ChrisRackauckas

@Eben60

However in both cases it works only for D[30:34] down to about 0.25, then diverges.

What do you mean?

Let’s set D[30:34] .= 0.1

┌ Warning: Interrupted. Larger maxiters is needed.
└ @ DiffEqBase C:\Users\eben\.julia\packages\DiffEqBase\KnYSY\src\integrator_interface.jl:329