Hi, I’m solving a PDE system using ModelingToolkit.jl, after defining variables, parameters and equations I do
@named adsmodel = PDESystem(eq,bcs,domains,[z,t],[cN₂(z,t),cH₂(z,t),cNH₃(z,t),qNH₃(z,t),Tg(z,t),Tw(z,t),P(t),v(z,t)],
[De1,De2,De3,Cpg,MTC,P0,α1,α2,α3,α4,β1,β2,λe,tpr,Cv];defaults = pars)
Then I apply discretization using MOL as follows:
N = 30
dz = (z_max - z_min)/N
discretization = MOLFiniteDifference([z => dz],t;advection_scheme = UpwindScheme())
prob = discretize(adsmodel,discretization)
However when I try to solve the system
solads = solve(prob,Rodas5(),reltol=1e-8,abstol=1e-8)
I get Initial Failure, I’ve tried different solvers compatible with Mass matrix definition but I keep getting the same results. I would like to try with different initialization algorithms using the argument initializealg as described here but I do not know how and where in my code. Thanks