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Changing constants via controlDict not working

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Old   August 25, 2016, 07:49
Default Changing constants via controlDict not working
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hekseli
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Hey!

I would like to change the value of the universal gas constant, which appears in openfoam-2.4.x as NA*k = 8314.47 and in some other references as 8314.4621 etc. (May have an effect in my testing atm.)

I found out that I can access to the universal constants via controlDict by adding:
Code:
DimensionedConstants
{
    unitSet             SI; // USCS

    SICoeffs
    {
        physicoChemical
        {
            R               R [1 2 -2 -1 -1 0 0] XXXXXXX;
        }
   }
}
When I run the case in the beginning I get a message that solver is overridinng DimensionedConstants and whatever I input is shown correctly.

However then in actual solution part e.g. R is still the original 8.31447 instead of the value in controlDict.

Any ideas how to change R otherwise?
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Old   August 25, 2016, 12:55
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Darko Radenkovic
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How do you know that your solver is using old value?


Regards,
Darko
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Old   August 25, 2016, 16:36
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hekseli
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Hey!

I print the the R in the solver routine.
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