Radiation Cell Value Extraction

dfeid · April 15, 2009, 11:07

Hi Everybody

I am facing a problem concerning the extraction of cell value from the radiation equation(s) [DO model]. Specifically, i am writing a UDF in which i have to read a value related to radiation equation from the computational domain in order to compute a source term of an another equation, but i cann't find the proper macro to extract it, reading the udf manual.
All we know that we can call the C_T(c,t) to read the temperature value from a cell. The question is what's the proper macro for the DO radiation model and if there is, and what's the proper syntax of it if i want to read the values of a 3 band non gray radiation model of a cell?

I would appreciate any helpful anwser
Thanks in advance

cedm237 · April 16, 2009, 13:33

I don t know personnaly I work with the DO model, with non conform interface and I inject the profil of radiation on semi transparent from a optical software
My goal is a model more accurate

avi · May 12, 2009, 06:26

did you try using C_DO_I(c,t,ns) for cell intensity where ns = sg_disco * nb + i; i-> direction of intensity; nb= band-number;

aliemadi · March 19, 2012, 02:22

Hello
you can use the following macro to access Radiation intensity of each cell:
C_STORAGE_R_XV(c,t,SV_DO_I,i)

where i is the number of grey band

April 15, 2009, 11:07	Radiation Cell Value Extraction	#1
dfeid New Member Join Date: Apr 2009 Location: Greece - Hellas Posts: 21 Rep Power: 17	Hi Everybody I am facing a problem concerning the extraction of cell value from the radiation equation(s) [DO model]. Specifically, i am writing a UDF in which i have to read a value related to radiation equation from the computational domain in order to compute a source term of an another equation, but i cann't find the proper macro to extract it, reading the udf manual. All we know that we can call the C_T(c,t) to read the temperature value from a cell. The question is what's the proper macro for the DO radiation model and if there is, and what's the proper syntax of it if i want to read the values of a 3 band non gray radiation model of a cell? I would appreciate any helpful anwser Thanks in advance

March 19, 2012, 02:22		#4
aliemadi New Member Ali Emadi Join Date: Jan 2011 Posts: 18 Rep Power: 15	Hello you can use the following macro to access Radiation intensity of each cell: C_STORAGE_R_XV(c,t,SV_DO_I,i) where i is the number of grey band paian90 likes this.

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April 16, 2009, 13:33		#2
cedm237 New Member cedric Join Date: Apr 2009 Posts: 6 Rep Power: 17	I don t know personnaly I work with the DO model, with non conform interface and I inject the profil of radiation on semi transparent from a optical software My goal is a model more accurate

May 12, 2009, 06:26		#3
avi New Member Join Date: May 2009 Posts: 3 Rep Power: 16	did you try using C_DO_I(c,t,ns) for cell intensity where ns = sg_disco * nb + i; i-> direction of intensity; nb= band-number;