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Forum: Fluent UDF and Scheme Programming

February 7, 2014, 14:21

Replies: 10

UDF function for grid spacing

Views: 2,175

Posted By behest

Many many thanks. I changed the delx,dely,delz,...

Many many thanks. I changed the delx,dely,delz, you are right. anyway, I recieve the error too. Please make a comment if you find any idea.
thanks again

Forum: Fluent UDF and Scheme Programming

February 7, 2014, 13:36

Replies: 10

UDF function for grid spacing

Views: 2,175

Posted By behest

Thank you very much. I have just written the UDF...

Thank you very much. I have just written the UDF as below:

/* This UDF is used to compute relative length scale in DES model*/

#include "udf.h"

DEFINE_ON_DEMAND(rls)
{
Domain...

Forum: Fluent UDF and Scheme Programming

February 7, 2014, 10:51

Replies: 10

UDF function for grid spacing

Views: 2,175

Posted By behest

yes, thank you very much, but counter of the loop...

yes, thank you very much, but counter of the loop is the main problem, each cell has several nodes and in a cell node loop, I want to save the the coordinates, but i do not know what is the counter...

Forum: Fluent UDF and Scheme Programming

February 7, 2014, 08:32

Replies: 10

UDF function for grid spacing

Views: 2,175

Posted By behest

Thanks alot for the code. I have another...

Thanks alot for the code. I have another question, how can I compute the distance? I mean that I have x,y,z coordinates of a node whereas I should have previous node coordinates too. In the cell node...

Forum: Fluent UDF and Scheme Programming

February 7, 2014, 05:33

Replies: 10

UDF function for grid spacing

Views: 2,175

Posted By behest

Thank you for your response. Acutally, I want...

Thank you for your response.
Acutally, I want to compute length scale of DES model and the formulation is given as:

L_s=sqrt(k)/(Bs*delta_max*C_des*w)
Bs=0.09 , C_des=0.61
k=turbulent...

Forum: Fluent UDF and Scheme Programming

February 6, 2014, 14:22

Replies: 10

UDF function for grid spacing

Views: 2,175

Posted By behest

UDF function for grid spacing

Dear all,
I want to write a UDF for calculating the grid spacing in 3D. Actually, I want to campute delta_x,delta_y and delta_z for each cell. My study case is a 3 dimension problem around a wing....

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