Interfacial area from population balance model

- August 26, 2019 at 11:25 am
  
  krndv
  Subscriber
  
  Hello
  I have modelled a bubble column reactor with discrete population balance model . Can anyone help me calculate interfactial area od secondary phase or atleast sauter mean diameter?
  
  Thank you
  Krndv
- August 28, 2019 at 12:10 pm
  
  Rob
  Ansys Employee
  
  PBM is rather complex, and we're limited to what's in the documentation in many cases. I assume you've read the doc? From memory you need to divide one of the moments by one of the other moments to get D32 and interface area is directly taken from a moment.
- September 2, 2019 at 3:19 pm
  
  krndv
  Subscriber
  
  The diameter mentioned in " countours > Parameter > Diameter" is the D32 right?
  
  Model: Eulerian Multiphase (water and air) with PBM
- September 3, 2019 at 9:00 am
  
  Rob
  Ansys Employee
  
  Not sure, PBM is on my list to learn properly, for now please read the manuals!
- October 16, 2019 at 8:27 am
  
  krndv
  Subscriber
  
  The diameter mentioned in " countours > Parameter > Diameter" is the D32 right?
  
  Model: Eulerian Multiphase (water and air) with PBM
  
  Any specific answer for this?
  
  Also in user manual its given, moments can be found for discrete model from population balance variables. But I am unable to find 'moments' as a variable in discrete PBM model post processing.
  
  If I can get moments, m3/m2 will give D32 right?
  
  Using Fluent 19.
- December 18, 2019 at 11:15 am
  
  krndv
  Subscriber
  
  Case: Multiphase water-air system with population balance model.
  
  The diameter mentioned in " countours > Parameter > Diameter" is the D32 right?
  
  Can anyone give a proper answer for above doubt?
  
  Regards
  
  Kdev
- December 18, 2019 at 12:19 pm
  
  DrAmine
  Ansys Employee
  
  Sauter Mean is under Properties>Diameter. Interfacial Area is just using that sauter mean and the total volume fraction

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