Porous Zone and Porous Jump Difference

- April 28, 2020 at 6:06 am
  
  Qkarl
  Subscriber
  
  Hi all,
  
  I was trying to simulate the pressure drop thru a porous media 2D using fluent, and initially i tried with porous zone setting with cell zone set as porous zone. The result seems good.
  Next, i want to simply the simulation, by using porous jump setting with the same C2 & permeability at internal boundary, but my solution diverged.
  
  I had try to increase my inlet air velocity / decrease the permeability, and i able to get converged solution. So, i think it might due to the pressure drop at porous jump too high, and the solution couldnt converge.
  
  What across my mind was, i able to get the converged result using same setting using porous zone, but why i couldnt get it using porous jump simulation? anyone can help with this? thanks alot
- April 28, 2020 at 11:38 pm
  
  Karthik Remella
  Administrator
  
  Hello,
  
  What kind of pressure values are you seeing with your porous zone analysis?
  
  Also, what are your porous jump settings?
  
  What are your other boundary conditions?
  
  One small note - porous jump condition is most useful when you have a thin membrane such as a screen or a mesh. I just wanted to mention it here. Is this your case?
  
  Thank you
  
  Best,
  
  Karthik