by nrgeng » 22 April 2013, 02:18
With a great deal of effort, I created a new simulation for the Hydration of Ethylene. I hoped that the same problems would occur with this new CSTR simulation as had occurred with the previous Methanol simulations. All of the same problems do present themselves so my efforts have not gone to waste.
I am attaching two flowsheet files showing the two “Solution failed;” messages that I receive when attempting to solve the CSTR Reactor Unit with a single equilibrium reaction. As described in an earlier Posting, the sequence of events prior to receiving the Message determines which of the two Messages that I receive.
(1) Solution failed: Function evaluation failed. Failed to obtain reactionRate for reaction . . .
(2) Solution failed: Function evaluation failed. Internal error; unknown reaction basis . . .
It may be of note that the CSTR simulation solved before the update. The problems presented after an update with CUP on April 19. I updated again before I ran these simulations so that I was up to date. I am reporting these as fresh results. Again, the Equilibrium Reactor simulation solves as shown in another posting, Ethylene (equilibrium) V1.1 M1.pdf.
I e-mailed the fsd file to you. I hope this is easier for you than it was for me.
NB. The file size is too large so I will have to send the second file with another message.
- Attachments
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- Ethylene (CSTR equilibrium) V1.0 (fail 2).pdf
- "unknown reaction basis" Message
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