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mrojczyk July 8, 2010 02:45

Emissivity
 
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

gearboy July 8, 2010 21:39

Quote:

Originally Posted by mrojczyk (Post 266283)
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)) ;

mrojczyk July 9, 2010 06:57

Quote:

Originally Posted by gearboy (Post 266499)

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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