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

by typing :

surface list

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

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...

sorry i can´t help you with that.

[Highflower]

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!

[gearboy]

Originally Posted by thomas
;135783

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

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.

[Highflower]

Originally Posted by gearboy

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!

[gearboy]

Originally Posted by Highflower

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 "==".

[visitor]

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.

[qin chunqiu]

Originally Posted by gernot lukesch
;135784

by typing :

surface list

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

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.