UDF: Distance from the wall
 

Dear All,

is it possible to determine the distance from the wall in Fluent UDF?

Greetings

Gabor

Re: UDF: Distance from the wall
 

Yes. It's possible. UDF can access a centroid of face on a cell and access the cell centroid as well.

Then ,the distance from wall can be calculated by vector calculations.

Regards

Keil

Re: UDF: Distance from the wall
 

Thanks Keil.

Can a UDF-macro determine the coordinates of the nearest wall in complex geometry?

Regards

Gabor

Re: UDF: Distance from the wall
 

Yes. It can.

But the program will be a little bit complex.

Regards

Keil

Re: UDF: Distance from the wall
 

Hi Gabor,

Try to use C_WALL_DIST(c,t) macro in UDF... I suppose it is what You need.

Michal

Can you guide me how to?

you can also use BOUNDARY_FACE_GEOMETRY(f, thread, A, dr, es, A_by_es, dr0)


dr is the distance between the cell centroids of the adjacent cell to the wall and the wall