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When switching from steady-state to transient mode in HYSYS, the following error occurs. How can this be resolved?

2017-03-15View Original

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When transitioning from steady state to transient operation using the heat exchanger, the error shown in the above image occurred. How can this be resolved? I’m new to HYSYS! O(∩_∩)O Thank you
Reply #22017-03-16
The pressure drop setting is unreasonable, resulting in no solution according to Bernoulli’s equation.
Reply #32017-03-16
Let’s take a look at the dynamic manual first. Clarify the dynamic regulatory requirements for each device. Build it directly in a dynamic environment; don’t use steady-state conversion.
Reply #42017-03-19
This post was last edited by rockleepj158 on 2017-3-19 at 17:00. Generally, I encounter this issue when optimizing towers; I check that the feed pressure is lower than that at the tower’s feed inlet, and then I increase the pressure corresponding to the feed inlet plate, or set it to the same level, which helps to achieve convergence. It would be best if you could upload the simulation file so that we can download it and examine the specific problem before giving you an answer – this will make the response more targeted.
Reply #52017-03-20
Could you please take a look? Thank you
Reply #62017-03-31
Aspen HYSYS 8.8 is running without any problems; there’s no such display as you mentioned

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