How do I model heterogenous reaction udf involving rates that are in terms of surface area?

- March 12, 2022 at 4:53 am
  
  Tolas_Atelier
  Subscriber
  
  I am modeling calcination kinetics in Fluent. I have a heterogeneous reaction udf set up to solve for the chemical reaction rate in an Eulerian multiphase model but it is in terms of the surface area of the particles. How can I translate this to be in terms of the cell volume as required by Fluent?
  The model is based on the chemical kinetics in this article: http://powerlab.fsb.hr/neven/pdf/Numerical%20Modelling%20of%20Calcination%20Reaction%20Mechanism%20for%20Cement%20Production.pdf
  Thanks
- April 8, 2022 at 7:34 am
  
  2018ugme092
  Subscriber
  
  follow
- April 19, 2022 at 10:51 pm
  
  Surya Deb
  Ansys Employee
  
  Hello,
  Can you try to calculate the net reaction rate for the particle surface area and then add then divide that by the cell volume to get a volumetric rate?
  I am not sure if this is what you are looking for.
  Regards SD

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