How to Effectively Monitor Convergence in Ansys Fluent

Ғылым және технология

In this 2 minute tip, our fluids engineer Stephen demonstrates how to monitor convergence in Ansys Fluent 2020 R2.
The goal of any CFD simulation is convergence, regardless of the complexity of the model. In this tutorial, we demo how to manipulate additional criteria in order to aid convergence in Ansys Fluent.
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Пікірлер: 25

  • @nadia675123964523965
    @nadia67512396452396527 күн бұрын

    Well explained, short and informative. Very good source of information!

  • @taosifalam1366
    @taosifalam13663 жыл бұрын

    Thank you, Stephen for the quick demonstration. It is well described!

  • @TheManolis1984
    @TheManolis19842 жыл бұрын

    Very good explanation. I have seen time and time again "converged" solutions but the solution kept changing with each iteration. Report definitions as a convergence criterion are a must

  • @ryanlin6205
    @ryanlin6205 Жыл бұрын

    Than You! It is really beneficial.

  • @afeflaribi2728
    @afeflaribi27283 жыл бұрын

    Thanks. This is very helpful !

  • @Post_grad
    @Post_grad10 ай бұрын

    wow this is really usefull info. thanks!!

  • @antoine1407
    @antoine14073 жыл бұрын

    thank you sir!

  • @childhoodforever223
    @childhoodforever2232 жыл бұрын

    Thank you 🙏

  • @e-cfd8639
    @e-cfd86392 жыл бұрын

    Very useful

  • @zain786ification
    @zain786ification2 жыл бұрын

    Hi , nice Explanation , could you explain how to create a report definition?

  • @wickedjoker8584
    @wickedjoker85843 жыл бұрын

    thanks bro

  • @rajendrakumar-bn7ch
    @rajendrakumar-bn7ch2 жыл бұрын

    Great video!. What is the difference between stop criteria for a particular parameter and global residuals?

  • @asifraj321
    @asifraj321 Жыл бұрын

    Great explanation, thank you so much. But I am unable to monitor the WSS plot. Can you give me some idea about this?

  • @AminRahimi-1
    @AminRahimi-12 жыл бұрын

    thank you soooo much. How can I plot wall-shear rplot after simulation in ansys 17.2 ?

  • @hayderal-lami4335
    @hayderal-lami43352 жыл бұрын

    thank you

  • @abrarjahinnafi1634
    @abrarjahinnafi16342 ай бұрын

    What of the variable never stabilizes?

  • @harshpatel4999
    @harshpatel49992 жыл бұрын

    Does time step affects solution in transient analysis? I am conducting a transient thermal-flow simulation which might take more than 60 mins of physical time to achieve steady state. Currently I am taking time step of 300 seconds(5 mins) with 300 iterations/time step. The velocity residuals reach lower than 1E-05 but energy and continuity residuals becomes steady at just below 1E-01. Is it acceptable or I need to change something? Please reply!

  • @EDRMedeso

    @EDRMedeso

    2 жыл бұрын

    Hey Harsh, the time step needs to be small enough to capture the shortest transient phenomena in your simulation. If it is a conjugate heat transfer problem, the time step for solid needs to be much higher than fluids. You might want to check your flux to make sure they are being conserved, especially heat transfer if your energy residuals are high. Hope this helps!

  • @burnsymm9874
    @burnsymm98743 жыл бұрын

    For some reason it won’t let me open up convergence conditions. I double click on it and it doesn’t open and it also won’t let me select it from the residuals window.

  • @EDRMedeso

    @EDRMedeso

    3 жыл бұрын

    Hi, you need to have a Report Definition first in order to define a convergence condition, you can see in the clip that Stephen has two created already when he opens the convergence conditions. Does that help?

  • @robinhood578
    @robinhood578 Жыл бұрын

    Hello! I ran a simulation where the energy residuals keep increasing but all the other residuals show decreasing trend. What might be the possible cause and solution of such trouble? After about 60 iterations, this happens.

  • @toukirahmedheaven

    @toukirahmedheaven

    Жыл бұрын

    Try for different solution model

  • @imwaz3644
    @imwaz36443 жыл бұрын

    Is the recent iris xe graphics with the 11th gen i5 16gb ram compatible and sufficient with ansys for medium 3d simulations?

  • @EDRMedeso

    @EDRMedeso

    3 жыл бұрын

    Hi, integrated graphics cards usually share system RAM with your CPU, so your 16GB of system may practically end up as less. Ansys have not specifically tested that range of Graphics cards so it is hard to say, I would say it probably will run for small simulations, but you will definitely run into issues with larger models as you run out of RAM. Hope this helps!

  • @dongdongdong2732

    @dongdongdong2732

    8 ай бұрын

    1.8 million cells (poly cells) consume about 15-16gb of ram. If you are working with only 1M cells, 16gb will work fine.

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