How do I remedy a divergence with this message. This is for scramjet combustion in 2D with injectors on both the top and bottom. Is there any way to look up error messages?

reduce underalaxtion factor.

I have tried reducing the underelaxation factors but the divergence persists. Any other suggestions? Perhaps in the AMG solver Menu?

It looks like a problem with your boundary conditions, be sure they're compatible with each other and consistent with the physics of what you're trying to simulate,

I think you'd better don't touch anything in the AMG menu, unless you know exactly what you're doing,

It is my opinion, if this could help.

Have a nice day,

Jkl.