Search found 3 matches

by wangjb
Sat Feb 23, 2013 1:43 am
Forum: VTSTTools
Topic: NEB computation for CH3O + H reaction
Replies: 4
Views: 111906

Re: NEB computation for CH3O + H reaction

Dear Prof. Graeme,

I will try again based on your suggestions. Thank your very much.

Jingbo
by wangjb
Sat Feb 23, 2013 1:40 am
Forum: VTSTTools
Topic: NEB computation for CH3O + H reaction
Replies: 4
Views: 111906

Re: NEB computation for CH3O + H reaction

[quote="kambiz"]Hi,
Sorry, but just a question,
So after using IOPT=7, all forces are less than 0.1 and then after using IOPT = 1, the job is not converging??

Cheers[/quote]

Yes. I have done some NEB calculations, my experience is that It is hard to converge using IOPT=1 and EDIFFG=-0.03 after ...
by wangjb
Wed Feb 20, 2013 2:54 am
Forum: VTSTTools
Topic: NEB computation for CH3O + H reaction
Replies: 4
Views: 111906

NEB computation for CH3O + H reaction

Dear everyone,

I want to compute the reaction barrier of reaction CH3O + H --> CH3OH on Cu(111) surface in order to reproduce others work. I adopt 6 images and firstly converge with the setup:
IOPT=7, timestep=0.01, EDIFFG = -0.1, ENCUT = 300, PREC = normal (decrease computation cost)
after ...