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Old   July 8, 2010, 02:45
Default Emissivity
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Marek
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Hi
How i can get an internal emissivity through UDF?
Is any function which works similar like f. ex. temperature: C_T(face, thread).
thanks.
Mark

Last edited by mrojczyk; July 8, 2010 at 04:15.
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Old   July 8, 2010, 21:39
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Ji Junjie
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Quote:
Originally Posted by mrojczyk View Post
Hi
How i can get an internal emissivity through UDF?
Is any function which works similar like f. ex. temperature: C_T(face, thread).
thanks.
Mark
use DPM_EMISSIVITY(p,m) to get the particle emissivity.

Use THREAD_VAR(t).wall.in_emiss to get the internal emissivity of a wall.

Return value: Profile structure type

Use the following method to get the emissivity (absorption coeff.) of internal gas

Thread*t;
Material *m;
real as;
Property *prop;
m=THREAD_MATERIAL(t);
prop =MATERIAL_PROPERTY(m);
as = generic_property(c,t,prop,PROP_abs_coeff,C_T(c,t)) ;
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Old   July 9, 2010, 06:57
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Marek
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Originally Posted by gearboy View Post

Use THREAD_VAR(t).wall.in_emiss to get the internal emissivity of a wall.

Return value: Profile structure type
Would you write a full structure udf to get this parameter?
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