We have an exciting announcement about badges coming in May 2025. Until then, we will temporarily stop issuing new badges for course completions and certifications. However, all completions will be recorded and fulfilled after May 2025.
Fluids

Fluids

Topics related to Fluent, CFX, Turbogrid and more.
  1. All Channels
  2. Fluids
  3. Changing maximal iterations per time step

Changing maximal iterations per time step

    • April 30, 2019 at 1:48 pm
      Max4
      Subscriber

      Hi,


      I want to change the max.iterations/time during the simulation. Is very any TUI-Command or UDF in order to do that?


      I have found something about "solve/.." with "max-iterations-per-time-step" but I don´t know if it's usable in this case.


      Regards,


      Maxime


       

    • April 30, 2019 at 4:19 pm
      Rob
      Forum Moderator

      TUI commands can do it, and if you can set max iterations as a parameter then it may be possible to use a UDF.  Given the trick is to converge each time step you may be better looking into why you're hitting the limit. 

    • April 30, 2019 at 7:00 pm
      Amine Ben Hadj Ali
      Ansys Employee
      Try to converge every time step and set update interval to more than 3 to have at least 3 iterations per time steps.
    • May 1, 2019 at 1:19 pm
      Max4
      Subscriber

      I would like to change the max. iterations/time step from a certain flow time.

    • May 1, 2019 at 1:26 pm
      Rob
      Forum Moderator

      Then use the solution steering tools: set the TUI command to trigger at a certain time step. 

    • May 1, 2019 at 2:46 pm
      Max4
      Subscriber

      Thank you for the answer. 


      Could you give me an indication for the TUI-Command that I have to use? I have just found "solve/set/time-step" for changing the time step size but not the maximum iterations per time step.


      Regards,


      Maxime

    • May 1, 2019 at 2:55 pm
      Max4
      Subscriber

      Thank you for the answer. 


      Could you give me an indication for the TUI-Command that I have to use? I have just found "solve/set/time-step" for changing the time step size but not the maximum iterations per time step.


      Regards,


      Maxime

    • May 1, 2019 at 4:13 pm
      Rob
      Forum Moderator

      /solve/set/max-iterations-per-time-step


       


       

Viewing 7 reply threads
  • The topic ‘Changing maximal iterations per time step’ is closed to new replies.
Ansys Innovation Space

© 2025 Copyright ANSYS, Inc. All rights reserved.

Ansys does not support the usage of unauthorized Ansys software. Please visit www.ansys.com to obtain an official distribution.