ASPEN adsorption help
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I’m sure those who have studied adsorption have watched that tutorial video. I followed the steps in it to \"create a simple process,\" but it wouldn’t run. It said there were 8 fixed variables that hadn’t been defined precisely. I checked those values; they weren’t mentioned at all in the video. I chose \"Accept\" (seems like the system assigns initial values to those variables), and it ran, but there were still errors. I did everything exactly as shown in the video – so why is there a problem? Please, those who understand, **save me** ~
Start by building the simplest model: one bed layer, with one inlet and one outlet; take it slow
http://pan.baidu.com/s/1c0fbuX6#list/path=%2F I created a simple process following the example in the official video; the material properties were also entered by me. Yet, this problem still occurs
The file has been uploaded; please take a look at it when you have time
@zhxbkofkyo Thank you so much; the ADA files, the ADS bed layer files, and the material property files are all included. Thanks for coming to the rescue
The file with the response is on the 5th floor. Please take a look when you have time; it was done exactly as shown in the video. Thank you to the senior for helping out ~~
Your version is too advanced; I can’t open it. I’ve created a simple example that you can use as a reference
After looking at your example, in my case it’s about carbon molecular sieves being used to adsorb nitrogen. The values for \"fixed\" and \"free\" amounts are the same as yours. The only difference is the method used for calculating the isothermal adsorption of the bed layer; when I used your method, I still encountered the same errors. So this option can be ruled out. I also checked your property settings and didn’t find anything unusual, so I still can’t identify where the problem lies in my case. Nevertheless, thank you very much for your help!
Thank you again; the issue has been resolved. Your example helped me identify the mistake – I hadn’t used the “default” definition for the material properties. I created a new set of properties for “N2-O2”, but later I used the default “default” properties instead. After making that change, everything worked fine. I’m extremely grateful for your generous help~~