JT effect simulation in Fluent

- February 1, 2022 at 5:17 am
  
  itsme_tilak
  Subscriber
  
  Hello Folks!
  For the past few days, I have been trying to simulate the JT effect in Fluent to observe the effect of pressure change on temperature but I am not getting any result. To tell the truth, temperature is increasing as it passes through the orifice but it is supposed to decrease. To make it more clear, I use inviscid model, energy equation and pressure inlet.
  Could anyone help me to fix this? It would be a great help.
- February 1, 2022 at 9:43 am
  
  Rob
  Ansys Employee
  
  What gas density are you using?
- February 1, 2022 at 1:45 pm
  
  DrAmine
  Ansys Employee
  
  You require Real Fluid Properties: so either CEOS or NIST EOS or RGP (based on NIST RefProp) in Ansys Fluent.
- February 1, 2022 at 3:34 pm
  
  itsme_tilak
  Subscriber
  
  I am using Methane as a fluid that has specific density of 0.554
- February 1, 2022 at 4:07 pm
  
  Rob
  Ansys Employee
  
  And how does a fixed density work for the JT theory?
- February 1, 2022 at 4:48 pm
  
  itsme_tilak
  Subscriber
  
  I am using a Density-based solver
- February 1, 2022 at 5:06 pm
  
  Rob
  Ansys Employee
  
  OK, and what is the material density?
- February 2, 2022 at 7:22 am
  
  DrAmine
  Ansys Employee
  
  how will you see JT effects using constant density? Or even using Ideal Gas EOS? Can you explain?

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