Pressure amplitude Limit cycle

- September 12, 2023 at 9:12 am
  
  suchita kadam
  Subscriber
  
  Dear Sir
  I am doing simulation on Thermoacostic simulation in transient Ansys Fluent. I am able to plot the pressure
  ampltude plot as above, It seems that the acoustic instability developed but it does not withstand the limit cyle. so why the limit cycle is not establshed here. As I tried it so many times but not possible to find. Kindly suggest the solution.
- September 13, 2023 at 1:07 pm
  
  Federico Alzamora Previtali
  Subscriber
  
  Can you share more details on what your domain looks like?
  What turbulence/acoustics model are you using?
  Is your mesh fine enough? Under resolved waves will numerically dissipate quickly as they propagate though your domain. Make sure you are using higher order discretization schemes and fine meshes to accurately propagate waves.

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