[csuperfect]

Hi everyone,
Recently, I did some simulations based on DES, and I want to know where is the LES region and where is the RANS region. How can I set up the blending function in DES model and display it?
Thank you very much.

[csui]

Originally Posted by csuperfect

Hi everyone,
Recently, I did some simulations based on DES, and I want to know where is the LES region and where is the RANS region. How can I set up the blending function in DES model and display it?
Thank you very much.

blending function is also mentioned in sst model:F1 and F2. i think u can get some idea from there. i am also studying on that.

[csuperfect]

Originally Posted by csui

blending function is also mentioned in sst model:F1 and F2. i think u can get some idea from there. i am also studying on that.

Thanks very much.
I know the blending function, but I don't know how to display it. If possible, can you help me?

[LuckyTran]

If you go to contour plot and look at the "surface types", there is an option to plot the rans-les-interface contour. I'm not sure how to export it though. Does this help at all or do you need the actual value of the blending function?

[michael1023]

Hi，do you have know how to display blending function in Fluent? or other method? Thank you!

[SlashCrash]

Hi all,
I'm currently looking into doing exactly this. Did someone managed to do it ? If so how ?

Thanks !

[SlashCrash]

Hi all,

For those interested in this answer,
You can do it by adding this in the functions subfield in controlDict:

    /*DESModelRegions1
    {
        // Mandatory entries (unmodifiable)
        type            DESModelRegions;
        libs            (fieldFunctionObjects);

        // Optional entries (runtime modifiable)
        result          DESField;

        // Optional (inherited) entries
        writePrecision  8;
        writeToFile     true;
        region          fluid;
        enabled         true;
        log             true;
        writeControl    runTime;
        writeInterval   0.03;
    }*/

Cheers

[LuckyTran]

That's how to do it in OpenFOAM... the question is how to do it in Fluent.