Fluent solution is stuck at 4 iteration since more than 10 hours

[shezanghamat]

Hello

I am trying to simulate a combustion problem in fluent. Its a 3D geometry of mesh size around 10.7 million polyhedra cell. Solution is stuck at 4 ietration since more than 10 hours and now it shows 12127 hours to complete 5000 iterations. I believe it is not solving rather it is stuck. I checked if the memory is full but RAM and CPU is not 100 % utilized yet. I am using standard k-epsilon and partially premixed combustion model. I even tried stopping and reloading the mesh and rerunning it but the issue still remains same.

I humbly request for suggestions to rectify this problem.

Thank you.