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how to obtain the total number of cells

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Old   January 24, 2011, 22:24
Default how to obtain the total number of cells
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Coiby Xu
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I know we can see the number when importing mesh file. But does Fluent provide API? Thanks!

Last edited by coiby; January 28, 2011 at 02:55.
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Old   January 24, 2011, 22:50
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Quote:
Originally Posted by coiby View Post
I know you can see the number when importing mesh file. But does Fluent provide API? Thanks!
You can use UDF to loop all the cells and count the total cell number.
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Old   January 25, 2011, 00:54
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Quote:
Originally Posted by gearboy View Post
You can use UDF to loop all the cells and count the total cell number.
Thank you, gearboy.
If Fluent doesn't provide API, that's the only way. I'll try this through it's a bit of a waste of CPU.
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Old   January 26, 2011, 00:47
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Could you try thread->nelements, where thread is a cell thread.
In that case, you have to loop over all cell threads using therad_loop_c.

Or

Try domain-> cell_count

It should help.
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Old   January 27, 2011, 04:46
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Quote:
Originally Posted by vig View Post
Could you try thread->nelements, where thread is a cell thread.
In that case, you have to loop over all cell threads using therad_loop_c.

Or

Try domain-> cell_count

It should help.
Thank you, vig!
I've tried "domain-> cell_count" :

Code:
 
DEFINE_INIT(my_init_function, domain)
{
 cell_t c;
 Thread *t;
 int i; //loop control
 int j; //loop control
 int cnum = domain->cell_count; // the total number of cells
 float *radius[cnum][K];
 j=0;
 thread_loop_c(t,domain)
 {
  for(i=0;i<K;i++)
   *radius[j][i]=gauss();
  j++;
 }
}
When compling it, Fluent gives out the following message:
"error C2039: 'cell_count' : is not a member of 'domain_struct'"?

And I check mem.h, find these lines:
Code:
#if RP_HOST
  int cell_count, face_count;
#endif
For the first method " thread->nelements", nelements doesn't seem to be a member of struct thread i thread.h.
Thanks!
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Old   January 27, 2011, 14:07
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which version of fluent are you using.
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Old   January 27, 2011, 20:58
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Hi, vig. I'm using Fluent_v6.3.26, 32bit, Win7.
I first compile it under Linux, but there are extra errors(see Does OS matters?Why?).
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