[Rui_27]

Hello to all,

Anyone knows how to get the coordinates of the center of a boundary (namely, velocity-inlet type)?

I have a straight channel with pores on its bottom surface, from where liquid water emerges. I want to get the coordinates of the center of each pore to be used in my udf calculations.

Any ideias?

Thanks!

Rui

[pakk]

Some scheme magic:

(display
 (map 
  (lambda (zone) 
   (format #f "~a: (~a,~a,~a)\n" zone 
    (pick-a-real
     (format #f "/report/surface-int/area-weighted-avg ~a () x-coordinate no" zone)
    )
    (pick-a-real
     (format #f "/report/surface-int/area-weighted-avg ~a () y-coordinate no" zone)
    )
    (pick-a-real
     (format #f "/report/surface-int/area-weighted-avg ~a () z-coordinate no" zone)
    )
   )
  )
  (filter
   (lambda (zn) (eq? (zone-type (get-zone zn)) 'velocity-inlet)) (inquire-zone-names)
  )
 )
)

Copy-paste this in the text-user-interface, and you will see a list appear.

Probably you want it in a udf, and not in scheme, but it was nice to get this working in scheme.

[Rui_27]

Hi pakk,

Thanks for your answer.

I did what you said, but nothing happening, and Fluent crashed.

Any suggestion for doing it in a udf?

Regards,
Rui

[upeksa]

You can look for the cell with the highest cell wall distance (C_WALL_DIST) or you can calculate the average x, y and z coordinate, it is not very complex to calculate it via UDF.
But unless your boundary has a simple geometry, it will not make much sense in any case.

[anan12345]

Originally Posted by pakk

Some scheme magic:

(display
 (map 
  (lambda (zone) 
   (format #f "~a: (~a,~a,~a)\n" zone 
    (pick-a-real
     (format #f "/report/surface-int/area-weighted-avg ~a () x-coordinate no" zone)
    )
    (pick-a-real
     (format #f "/report/surface-int/area-weighted-avg ~a () y-coordinate no" zone)
    )
    (pick-a-real
     (format #f "/report/surface-int/area-weighted-avg ~a () z-coordinate no" zone)
    )
   )
  )
  (filter
   (lambda (zn) (eq? (zone-type (get-zone zn)) 'velocity-inlet)) (inquire-zone-names)
  )
 )
)

Copy-paste this in the text-user-interface, and you will see a list appear.

Probably you want it in a udf, and not in scheme, but it was nice to get this working in scheme.

Thanks pakk, I've been searching for this for a couple of days now.