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How to read surface tension?

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Old   January 25, 2006, 10:59
Default How to read surface tension?
  #1
_svl
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Hi,

Is it possible to read from the UDF the value of the surface tension coefficient given through Define > Phases > Interaction > Surface Tension ?

Thanks.
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Old   January 25, 2006, 11:37
Default Re: How to read surface tension?
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edi
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I don't know if I understood right, but if you mean giving a non-constant value to the surface tension coefficient (for example, as a function of temperature) by UDF the answer is yes (DEFINE_PROPERTY macro, there might be an example even in the udf manual).

Hope this helps

Edi.
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Old   January 25, 2006, 12:37
Default Re: How to read surface tension?
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_svl
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Thanks, but I need not to give value from UDF to the solver, but to read the current value of the surace tension into UDF.
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Old   January 25, 2006, 14:02
Default Re: How to read surface tension?
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edi
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Ok, sorry for the misunderstanding. I think you can use the RP_get_real macro, but you have to know the Scheme name of that variable, and unfortunately I don't...

Hope someone will be more helpful...

Edi.
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Old   January 26, 2006, 10:55
Default Re: How to read surface tension?
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_svl
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My case file contains:

(sfc-tension-coeff (phase-2 phase-1 (constant . 0.036)))

But I do not know how to read this value (0.036) with RP_Get_Real...

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