HYSYS simulation calculation for atmospheric pressure columns
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Question: When performing simulation calculations for atmospheric pressure columns in HYSYS, which settings can lead to faster convergence?
From my experience, the purpose of performing simulations is not to achieve convergence. To put it another way, choosing different constraint conditions depends on your research objectives. Of course, if you make wrong choices or if the conditions you set prevent convergence, that can be problematic. It’s a gradual process that requires continuous exploration in order to grasp the essence of it.:)
For general quality requirements, it is appropriate to set the yield of the product at the top (bottom) of the tower, or the fraction occupied by various components.
Fast convergence is not the goal; what matters is whether it matches the actual process. Of course, convergence is also necessary, as only by converging can one adjust to the actual process. As long as your settings are consistent and conservation laws are satisfied, convergence is generally achievable