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What is the best way to include speed in the DTCHull (wigleyHull) tutorial?

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Old   October 7, 2015, 14:59
Default What is the best way to include speed in the DTCHull (wigleyHull) tutorial?
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Ron de Vos
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I am a little bit confused. I want to give the Hull a speed of 15 knots. In the motrobiketutorial is used a special O.org folder initinalConditions. In cylindertutorial there is a change of the inlet X direction in the U folder. What is the best way to include speed in the wigleyhull tutorial?
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Old   October 10, 2015, 10:44
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Bruno Santos
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Quick answer:
  • Tutorial case: "multiphase/interDyMFoam/ras/DTCHull"
  • Velocity file: "0.org/U"
  • "Umean" is the absolute value for the outlet boundary condition, which is used here:
    Code:
        outlet
        {
            type            outletPhaseMeanVelocity;
            alpha           alpha.water;
            Umean           $Umean;
            value           $internalField;
        }
    This is because the "outletPhaseMeanVelocity" boundary condition will calculate the direction based on the flow direction (at least I think it is...).
  • "mUmean" is the vectorial value over X, which is used here:
    Code:
    internalField   uniform ($mUmean 0 0);
  • The folder "0.org" is only used if the following commands from the "Allrun*" scripts work properly:
    Code:
    rm -rf 0
    cp -r 0.org 0

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