For a complex process
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When performing very complex process simulations, is it possible for them not to converge? What if the last batch of logistics cannot be recycled? ? ? Please help, thank you.
Check how large the difference is between the torn flow streams before and after. If the difference is small, there is generally no major issue; if the difference is large, adjust it yourself
Hello, teacher. I have a question: when using the tearing flow method doesn’t necessarily lead to easy convergence, the small-flow repair approximation can be employed, with a small flow rate used to divert the flow and resolve the issue. It’s possible that the torn stream does not meet the convergence requirements; therefore, a small flow rate is separated out as the difference between the streams before and after tearing, and this difference is used as a tolerance to address the issue of material imbalance. I heard this from a professor! But I don’t quite understand; please give me some guidance, teacher. Thank you very much.
Let’s put it this way: if A is a circulating material, and when there is no circulation, the amount added at the beginning is 1000 kmol/h, while the amount recovered at the end is 990 kmol/h. In that case, you set aside 10 kmol/h of material to be mixed with those 990 kmol/h, so as to use it as the feed for the 1000 kmol/h rate