ACUSOLVE

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

My CFD solve is running. I am working on EGR system(exhaust gas recirculation system). Its the thermal analysis. There are two fluid(air & coolant).

Goal is to find outlet temperature of fluid i.e. air & coolant.

My result is not converging. It's very big modal, nearly 40 million elements are formed. Each time step is taking nearly 30min.

Now after nearly 96 hours, 160 time step is reached. Still its not converged. At TS 70, values looks more trendy. And at TS 120, solution was converged its best. But now at TS 160, results are not looking trendy.

Now, I want result at TS 120. Is it possible, now solve is at TS 160?

And, if any suggestions are there to coverge solve, then please suggest me.

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Answers

  • ydigit
    ydigit
    Altair Employee
    edited May 2017

    If you have the outputs enabled at a regular interval, say 10, like in the screenshot, it is possible to evaluate the results at TS120. You could use AcuOut (AcuConsole > - Tools) to extract the .FV or H3D file for this time step.

     

    <?xml version="1.0" encoding="UTF-8"?>2017-05-24_0828.png

  • acupro
    acupro
    Altair Employee
    edited May 2017

    Are the air and coolant mixing - or are the streams completely separate at all times?  But as the above comment, you cannot recover nodal output from a previous time step if it was not requested in the input file.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited May 2017

    Thanks for reply sir

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