Doubt related to particle size in DPM

- March 26, 2021 at 8:27 am
  
  Aitor
  Subscriber
  
  I am injecting particles with a diameter of 2.5 mm, with only one physical model enabled: breakup (KHRT). When displaying particle tracks, I see that there are many particles with diameter greater than 2.5 mm. Why is happening this? n
- March 26, 2021 at 1:42 pm
  
  Rob
  Ansys Employee
  
  Check through the settings in DPM models. Also click on Stochastic collision, turn off coalesence and then turn collision back off. It shouldn't do anything but it was a glitch in the original model. n
- March 29, 2021 at 8:29 am
  
  Aitor
  Subscriber
  
  I have clicked on stochastic collision, turn off coalescence and then turn back collision off, even though I get the same solution. I have checked everything, and I have only one physical model enabled: Breakup. How can particle diameter grow if I do not have coalescence enabled?n
- March 29, 2021 at 10:32 am
  
  Rob
  Ansys Employee
  
  I assume the injection is single size and no (wall film) splashing on walls? n
- March 29, 2021 at 10:35 am
  
  Aitor
  Subscriber
  
  I assume the injection is single size and no (wall film) splashing on walls?https://forum.ansys.com/discussion/comment/113034#Comment_113034
  Yesn
- March 31, 2021 at 6:44 am
  
  Aitor
  Subscriber
  
  Anyone can help me? It seems that it is a bug of Fluent R2021.nI would also like to ask if it is possible to add a UDF in order to disable breakup if a certain condition is met. This is a way to model solidification of the discrete phase.n

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