[eml51]

Hi,

I have written a UDF to initialise all the cells in my domain to a temperature of 500K; however, when I contour plot static temperature (after initialising the solution) all the cells are at the default 300K specified in the GUI.

My simulation is transient, using a pressure based solver and a partially premixed combustion model.

My end goal is to initialise the solution with a more complex temperature distribution (hence the motivation to write a UDF).

I have hooked the UDF onto "initialisation" and I am using Fluent in Parallel mode in Workbench 19.2. I have also included the mem.h header when building the library.

Here is the code:



#include "udf.h" //DEFINE macros + more
#include "mem.h" //access flow variables

// initialise the solution with temp = 500K
DEFINE_INIT(temp_init_test,d)
{
cell_t c;
Thread *t;
/* loop over all cell threads in the domain */

thread_loop_c(t,d)
{
/* loop over all cells */
begin_c_loop_all(c,t)
{
C_T(c,t) = 500.;
Message("first ct is %f\n", C_T(c,t));

}
end_c_loop_all(c,t)
}
Message("Cells should be initialised!");
}



Am I missing something required to make this work in parallel mode (or something else entirely)? Any insight is greatly appreciated.


Thanks in advance


EDIT:
The UDF behaves the exact same way when Fluent is run in Serial mode

[AlexanderZ]

in your code you have output messages

Message("first ct is %f\n", C_T(c,t));
Message("Cells should be initialized!");

did you get messages in fluent's output console?

if not, than your init macro is not hooked

user-defined -> function hooks -> initialization -> select your macro -> OK

best regards