Segments in Pipeline Unit Op

Simulate chemical processes using advanced thermodynamic models

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Segments in Pipeline Unit Op

Forum: Help (Classic UI)

Creator: Thees Wilken

Created: 2024-08-05

Updated: 2024-08-07

Thees Wilken - 2024-08-05

Hi,

could anyone tell me what DWSIM actually calculates, if for example a ball valve is added as a section in a tube? Only the rugosity can be fixed there, so is there a fixed Kvs or zeta value in the beckground that is used for the calculation of the pressure drop?

Thees

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Daniel Medeiros - 2024-08-05

all accessories are converted to an equivalent length of straight tube, then the pressure drop can be calculated.

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- Thees Wilken - 2024-08-05
  
  Thanks for the fast answer. So there are fixed coefficients for the calculation of the equivalent length?
  
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Daniel Medeiros - 2024-08-05

yes => https://github.com/DanWBR/dwsim/blob/windows/DWSIM.UnitOperations/UnitOperations/Pipe.vb#L1083

old code in Portuguese, sorry.

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Daniel Medeiros - 2024-08-05

https://github.com/DanWBR/dwsim/blob/windows/DWSIM.UnitOperations/UnitOperations/Pipe.vb#L624

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Thees Wilken - 2024-08-07

Thanks for the fast help!

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