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Turbulence Model – Joule Heating in a Pipe – Fluent

- October 12, 2021 at 11:37 am
  
  Edwin1211
  Subscriber
  
  Hi Ansys Team, I hope this message finds you well.
  I need to simulate the heating process of an air stream flowing inside a metallic pipe. The pipe is subject to a voltage potential, making electricity flow across the metal, releasing heat by the joule effect. The heat released is absorbed by the air stream, increasing its temperature. The outlet temperature of the air stream is in the range 800C - 1000C, while the pipe can reach 1100C - 1200C at its hottest point. The diameter of the pipe is in the range of 0.5in - 5in. Please find attached a representation of the process
  Given the high temperature of the process and the small diameter of the pipe, gas might enter the turbulent regime. However, I am not sure what turbulence model would be the most appropriate to use for the simulation. Maybe K-epsilon, or maybe K-omega SST?
  Could you please help me with this? :)
  Thank you
- October 13, 2021 at 6:52 am
  
  aitor.amatriain
  Subscriber
  
  Both realizable k-epsilon and k-omega SST work well.
- October 13, 2021 at 11:22 am
  
  Amine Ben Hadj Ali
  Ansys Employee
  
  Stick to the default SST Model and assess good near wall resolution.

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