POLYFLOW – COEXTRUSION

- April 18, 2023 at 3:46 pm
  
  Rayanne Pinto Costa
  Subscriber
  
  Hello,
  I am trying to run a simulation in Polyflow with two immiscible fluids in a direct coextrusion case. I want to predict the die swell of both material (concentrics) and the layer between then. Each fluid has two subdomains (dies and free stream). However, when I start to add the boundary conditions, I noticed that the option for the Interface is always off for me apply the moving boundary conditions. I tried creating tasks as FEM and evolution and FEM and stead state. I am not sure what is causing it to allow adding the interface. I added here a picture.
- April 24, 2023 at 11:56 am
  
  Prashanth
  Ansys Employee
  
  Hi
  You can check example 49 3D coextrusion, in polyflow help page. It should show how to define a moving interface.

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