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turbulentInlet boundary with time-dependent flow velocity

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Old   March 23, 2023, 17:09
Question turbulentInlet boundary with time-dependent flow velocity
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hui cheng
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Hi all,
I would like to do a LES simulation for a tidal current (with a 5% turbulence intensity). The tidal current will go from 0.25 m/s and to -0.25 m/s ("-" means opposite direction).

I tried use the turbulentInlet type inlet condition, and find that this type seems not support time-dependent velocity input.

I tried like this:

        type               turbulentInlet;
        fluctuationScale  (0.05 0.05 0.05);
        referenceField    uniformValue table
          ((0 (0.25 0 0))
          (10800 (0.0 0 0))
           (21600 (-0.25 0 0))
It gives errors as:

--> FOAM FATAL IO ERROR: (openfoam-2012)
Expected keyword 'uniform' or 'nonuniform', found uniformValue

Could anyone give me some advice for this kind of simulations?

Best regards,
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Old   April 3, 2023, 12:09
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This sounds like something that code stream might be able to do.

There is a good tutorial on how to do similar things in of9 in this video tutorial series (see section 7) Here is the same playlist here if you prefer the Youtube website

In the website for these tutorial you can also find the examples shown in the videos such that you can copy-paste and edit the to suit your problem.
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inlet bc, les, time-dependent, turbulentinlet

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