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UDF: Distance from the wall

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Old   August 14, 2002, 04:36
Default UDF: Distance from the wall
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Gabor
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Dear All,

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

Greetings

Gabor
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Old   August 14, 2002, 05:15
Default Re: UDF: Distance from the wall
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Keil
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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.

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Keil

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Old   August 14, 2002, 06:31
Default Re: UDF: Distance from the wall
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Gabor
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Thanks Keil.

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

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Gabor
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Old   August 15, 2002, 02:34
Default Re: UDF: Distance from the wall
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Keil
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Yes. It can.

But the program will be a little bit complex.

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Keil
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Old   August 19, 2002, 02:26
Default Re: UDF: Distance from the wall
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Michal
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Hi Gabor,

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

Michal
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Old   June 10, 2016, 15:52
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Pratik Dhoot
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Can you guide me how to?
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Old   May 24, 2018, 08:27
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zobekenobe
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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
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