Fluids

Fluids

Fluent scaled residuals

    • Hussein13
      Subscriber
      Hello,I'm doing an aerodynamics analysis on vehicle using fluent.
      I completed calculations and got a very fair results.
      The problem is i couldnt find the iteration history for the scaled residuals, i saved the whole project and the fluent setup but i cant find the details anywhere.
      I managed to find the results for the CD and CL but the scaled residuals aee missing.
      Can anyone help?
      Thank you.
      P. S : a iteration history for the cd is attached and i want the same for the scaled residuals.
    • DrAmine
      Ansys Employee

      Go under residual's and plot. I guess only last 1000 iteration are stored if you did not change the default behavior.

    • Hussein13
      Subscriber

      Go under residual's and plot. I guess only last 1000 iteration are stored if you did not change the default behavior.



      Thank you amine Yes, i know how to plot the residuals. But the thing is i need the data which is used for plotting the graph, so i can use it in another program. I need it as a txt file or something similar,
    • DrAmine
      Ansys Employee
      Okay. I do remember that writing option has been dropped. You need to initiate it from beginning. I need to check
    • Hussein13
      Subscriber
      Okay. I do remember that writing option has been dropped. You need to initiate it from beginning. I need to check


      Yes, there is NO writing option for the scaled residuals. But, as d long as the fluent is able to plot it. Then the data must be there somewhere. I can't really do the calculation all over again. I would really appreciate if you could help me out.

      Thanks again.
    • DrAmine
      Ansys Employee

      In Fluent console:


      1) /plot/residuals-set ptf then give a name for the file


      2) /plot/residuals


      Then select the equations which will be written in the file. You can then read back the file into Fluent to plot it or use elsewhere!

    • Hussein13
      Subscriber

      In Fluent console:


      1) /plot/residuals-set ptf then give a name for the file


      2) /plot/residuals


      Then select the equations which will be written in the file. You can then read back the file into Fluent to plot it or use elsewhere!



      I will give it a try and tell you what happens.
      Thank you sir.
    • DrAmine
      Ansys Employee

      Please update then and mark the solution provided as the "answer" and the topic as "Is solved".

    • Hussein13
      Subscriber

      Please update then and mark the solution provided as the "answer" and the topic as "Is solved".



      Thank you sir.
      Anyway i can get the iteration's CP HISTORY, I have the Cd values but i only need the cp and the viscous coefficient as separate values not as a sum.
      Thanks again.
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