Very simple combustion problem.

Jouch

Hi, I am having serious problems with what seems to be a very straight forward problem.

I have 2 inlets and an outlet. Very simple 2-D axisymmetric model. One inlet I have Oxygen and the other Hydrogen. O2/H2 ratio is about 3:1

I am using the Hydrogen/Air mixture template. I have a good model with very good residuals under non-reacting conditions. I have a well adapted mesh.

Problem: I apply a temperature patch to a region near the inlet. Solution runs and the temperature increases over 3000K as expected. After about 5000 or so iterations, the flowfield is cold and there is no longer a flame.

I cant work it out and would be extremely grateful of any assistance.

Jouch