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Udf condition

- March 22, 2023 at 1:24 pm
  
  Marti
  Subscriber
  
  Hi,
  is it possible to stop the effect of a wave pressure at the inlet after a chosen dt but with the simulation always running?
  Thank you
- March 22, 2023 at 2:23 pm
  
  Rob
  Forum Moderator
  
  Please can you elaborate?
  - March 22, 2023 at 2:55 pm
    
    Marti
    Subscriber
    
    I have a time based simulation, my inlet is a pressure inlet defined by a udf (sine wave). I want to study only a few wave cycles and see how they propagate
- March 22, 2023 at 5:10 pm
  
  Rob
  Forum Moderator
  
  OK, and after some time the boundary pressure is constant? Assuming that's the case have a look at DEFINE_PROFILE and IF statements. It's also possible via Expressions within Fluent using much the same approach.
  - March 22, 2023 at 6:03 pm
    
    Marti
    Subscriber
    
    Yes, thank you

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