[Howard]

Dear all,
These days I'm trying to calculate the flame speed of CH4/NH3 using different mechanisms. As shown in the attachment the mechanisms I tried including Konnov mechanism. Since the mechanism have been utilized a lot in the literature, it should work anyway. When I use the sample of flame speed calculation in CHEMKIN, there is always no solution for I just changed the mechanism from GRI to Konnov mechanism. I tried some changes of mesh setting but it still doesn't work. So could some one help to solve this. I will appreciate it very much.