Modelling expansion through moisture absorption?

- June 17, 2019 at 4:54 am
  
  Doba
  Subscriber
  
  I want to simulate a material expanding/shrinking under constant fluid flow (whose rate can be changed). I am assuming this needs to be done using System Coupling (2 way FSI) but I am not sure how to model expansion and absorption
  
  I watched these 2 videos about 2-way FSI
- June 17, 2019 at 5:13 am
  
  DrAmine
  Ansys Employee
  
  Regarding the fluid part which fluids and states are included?
- June 17, 2019 at 5:53 am
  
  Doba
  Subscriber
  
  Regarding the fluid part which fluids and states are included?
  
  The material is Chitosan (hydrogel) and the fluid is humid air (lets say 50% RH)
- June 17, 2019 at 7:38 am
  
  DrAmine
  Ansys Employee
  
  and the absorption is described through what? Mass flow Inlet?
- June 17, 2019 at 9:48 am
  
  Doba
  Subscriber
  
  and the absorption is described through what? Mass flow Inlet?
  
  I believe so, yes.
  
  I'll be remaking the geometry shown here - https://forum.ansys.com/forums/topic/some-of-the-residuals-increasing-sharply-after-20-or-so-iterations/
- July 3, 2019 at 5:29 am
  
  Doba
  Subscriber
  
  BUMP
  
  Anyone?
- July 3, 2019 at 2:46 pm
  
  Rob
  Ansys Employee
  
  If there's no need to calculate the forces on the solid bits have a look at moving deforming mesh: you can move a surface based on whatever criterion you desire.

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