Problems with COUSCOUS 2.6.0.18

Discusses use of COCO, the process simulation and modelling software suite from AmsterCHEM, downloadable from http://www.cocosimulator.org

Moderator: jasper

User avatar
jasper
Posts: 1129
Joined: 24 October 2012, 15:33
Location: Spain
Contact:

Re: Problems with COUSCOUS 2.6.0.18

Post by jasper »

Glad to hear it. Why does the last one not solve? Any clues?

Also you reported a crash that so far I have been unable to reproduce. Does that still happen?
nrgeng
Posts: 239
Joined: 16 February 2013, 12:45
Location: USA

Problems with COUSCOUS 2.6.0.18 No. 12

Post by nrgeng »

All seven active flow sheets solve now. None of them crash. I will inform you if I uncover a flow sheet that still crashes. Glad to have that over!

The ID 3 flow sheet would converge to ~ x.xxxxe-05 but not solve (The new Gibbs Warning Message was repeatedly displayed in the Log), so after a few attempts, I just conducted the surgery and replaced some of the Gibbs Reactor Units with Fixed Reactor Units as we discussed. It then solved. No longer of concern to me.
User avatar
jasper
Posts: 1129
Joined: 24 October 2012, 15:33
Location: Spain
Contact:

Re: Problems with COUSCOUS 2.6.0.18

Post by jasper »

If the solution stalls at a low residual, this usually indicates that one of the unit operations it not solving to sufficient precision to reach the desired overall residual. Probably, as you indicate, the Gibbs Reactors in this case.
Post Reply

Return to “COCO (AmsterCHEM)”