Reply To: LES simulation of a fragment of a hydrogen-air combustion chamber

[jcooper]

Hi m.d.:

The EDC model seems to cause a lot of convergence problems. It is also tuned for methane combustion in Fluent. 

While TCI seems important in theory, most H2 problems seem to solve better with finite rate chemistry and the thickened flame model.  I would recommend trying that approach with a good hydrogen chemistry mechanism.  I would also look into the LES best practices to ensure that your numerics settings in Fluent are optimized for LES.

https://www.ansys.com/content/dam/product/fluids/cfd/tb-best-practices-scale-resolving-models.pdf