Fluids

Fluids

bubble size distribution in a reactor

    • anamena
      Subscriber

       Hello,


      Hello, I’m running a simulation of a 2L reactor. The domain is set up as multiphase (Eurelian), WATER and AIR. WATER is phase one and AIR is phase two and a 2k-epsilon ( disperse) model 


      My geometry has a 7 holes sparger at the bottom with a 1 mm diameter and a disperse velocity of 0.606 m/s.  


      The boundary conditions:


      Top_tank is degassing, impeller and tank are walls, inlet (7 holes) are inlet with volume fraction 1. 


      I try to implement different bubble size with this set-up but is not working. I would like to now if there is another model that I have to include 


       


      I hope someone can guide me, I thank in advance anyone that will be so kind to provide some information 

    • DrAmine
      Ansys Employee

      You can think about using the Interfacial Area Concentration Model or one of Population Balance Approaches to model a dynamic PSD

    • anamena
      Subscriber

      Thank you for the suggestion. Do you know if there are specific UDFs for the Population Balance model in order to setup different bubble diameter? 


       

    • DrAmine
      Ansys Employee

      The idea of population balance methods is that you do not require to set the diameter but to prescribe classes or moments to calculate a dynamic psd/diameter

    • anamena
      Subscriber

      Thank you for your help

Viewing 4 reply threads
  • You must be logged in to reply to this topic.