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UDF Macros for accessing radiation temperature

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Old   January 7, 2003, 05:28
Default UDF Macros for accessing radiation temperature
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Tomb
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Dear guys,

Is there anyone know how to obtain the radiation temperature in each cell of a mesh within the UDF?

Is there any standard macros like C_T(c,t) to access the radiation temperature in a cell?

Please advise me if you have a solution for this, thanks!

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Old   May 28, 2011, 02:30
Default just find it in Ansys portal
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#440 - FLUENT - How to access radiation temperature in a UDF

Product:FLUENTVersion:Other
Answer:



A user wants to access the radiation temperature in a UDF.
Solutions are available for P1 and DOM radiation models.
Radiation Temperature in a given cell (c,t)
- using the P1 radiation model:

pow(C_P1(c,t) / (4. * SIGMA_SBC), 0.25);

Herein, "C_P1(c,t)" is the "incident radiation".

- using the discrete ordinate ("disco") radiation model (DOM):

The incident radiation can be found in...

C_STORAGE_R_XV(c,t,SV_DO_IRRAD,0)

Thus, the radiation temperature can be calculated as...

pow( C_STORAGE_R_XV(c,t,SV_DO_IRRAD,0) / (4. * SIGMA_SBC), 0.25)
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Old   June 4, 2015, 22:15
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Quote:
Originally Posted by chingyinh View Post
#440 - FLUENT - How to access radiation temperature in a UDF

Product:FLUENTVersion:Other
Answer:



A user wants to access the radiation temperature in a UDF.
Solutions are available for P1 and DOM radiation models.
Radiation Temperature in a given cell (c,t)
- using the P1 radiation model:

pow(C_P1(c,t) / (4. * SIGMA_SBC), 0.25);

Herein, "C_P1(c,t)" is the "incident radiation".

- using the discrete ordinate ("disco") radiation model (DOM):

The incident radiation can be found in...

C_STORAGE_R_XV(c,t,SV_DO_IRRAD,0)

Thus, the radiation temperature can be calculated as...

pow( C_STORAGE_R_XV(c,t,SV_DO_IRRAD,0) / (4. * SIGMA_SBC), 0.25)
Hi,

I know it's quite a old post but I want to clarify few things.

C_P1(c,t) = incident radiation for P1

C_STORAGE_R_XV(c,t,SV_DO_IRRAD,0) = incident radiation for DOM

Am I right?

Thanks in advance.

MAC
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