Problems with the calculator in Aspen
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In the settings for the calculator, there is a page dedicated to setting the order of calculations – options such as before (before a certain device model), after (after a certain model), first, last, etc. What do these settings mean? What is its function, and what impact does it have on the results? Thank you for your advice?
You can find out by creating your own example to test various situations, or by checking the help files.
You decide what to set for the calculator based on your needs; for example, you can use the calculator to set the calculation parameters for the next device (such as the yield at the top of the tower, a value that is certainly related to the feed conditions). You can choose \"before\" to specify that it should be calculated before a certain device model, or for cyclic processes, if you want this calculation to take place first, then select \"first\". .
This is purely a matter of the order of calculation; there is an issue with the sequence in which results are obtained, but nothing else significant happens. It might possibly help with convergence. . .
Look at the small text instructions below; they explain it very clearly. This is still useful, as it’s easy to get confused