How to retrieve thread id by name
 

hi guys, does anybody of you know a good method to retrieve the id of a thread (you know, those shown in the boundary conditions panel) if I only know the name of the thread (e.g. ground)? I have to implement a function like

int thread_id = getThreadIDByName("ground");

but I have absolutely no idea how to get the id of "ground" without taking a look into the boundary conditions panel and adjust the sources.

thanks for any help thomas

Re: How to retrieve thread id by name
 

by typing :

surface list

into the tui you get all id´s to all names. hope that helps

Re: How to retrieve thread id by name
 

definitely helps. but do you know a way to call this from within the source code (I was thinking about doing this via CX_Interpret_String(char *) ) so that you can access the output? I was thinking about writing a *.fluent file that starts a transscript and cutting out the needed information from the generated file, but I want everything to happen automatically when I load the case into fluent and still don't know how to realise this best...

Re: How to retrieve thread id by name
 

sorry i can´t help you with that.

Hi Thomas!
Did you solve the problem of getting the thread ID from the name? I have exactly the same problem now...

Thanks in advance!

For Serial solver and Fluent version before 12.1, you can use the following in you source code.

real ground_id;
CX_Interpret_String("(if(not(rp-var-object 'ground-id))(rp-var-define 'ground-id -1 'integer #f) ())");
CX_Interpret_String("(if (zone-name->id 'ground)(rpsetvar 'ground-id (zone-name->id 'ground))(rpsetvar 'ground-id -1))");
ground_id=RP_Get_Integer("ground-id");

Note: The above code doesn't work in parallel solver. You need to use auto-load scheme file.
For Fluent 12.1, you can loop over all the thread in you domain and use THREAD_NAME to judge whether the thread name is same as you specified. Then use THREAD_ID to get its id.

Hi gearboy!
I use Fluent 13 in parallel, do you mean that I can use THREAD_NAME(t) instead of THREAD_ID(t) in my loop?
For example to access my cells in zone n:

thread_loop_c (t,domain)
{
if ( NULL != THREAD_STORAGE(t,SV_T_G) )
{
begin_c_loop (c,t)
{

if(THREAD_NAME(t) == "n")
{
}
}
end_c_loop (c,t)
}
}

It doesn't seems to work, maybe I misunderstood you...
Thanks for your help!

Use STREQ to compare two strings, not "==".

Interesting, a long way since this posting started. Now ANSYS 2021academic, just looking if any developments have occurred. Whether above code will work with parallel processing or not.

I get the surface list as following. But the IDs are not reasonable. Could you please share me what these IDs mean?
/surface> list-surfaces
surface group name id points 0D facets 1D facets 2D facets
------------------------- ---- --------- ---------- ----------- -----------
cylinder 0 0 0 0 0
inlet 2 0 0 0 0
int_fluid 3 0 0 0 0
outlet 1 0 0 0 0
x0 4 0 0 0 0

Total: 0 points, 0 facets.