Dear DWSIM users and developers,
When I run the ASU example (https://dwsim.fossee.in/flowsheeting-project/dwsim-flowsheet-run/62) with newest version of DWSIM, I meet the fatal NaN error in Low Pressure Column calculation.
When I downgrade DWSIM as v5.8, that example run succesfully. However, I want to use newest version of DWSIM for these kind of problems.
Can you tell me why this convergence problem of the complex column occurs in the latest version of DWSIM? If it's not a problem with the program itself, please let me know which part of the example needs to be modified so that the calculation can be performed properly.