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- - udf for tube (https://www.cfd-online.com/Forums/fluent-udf/116146-udf-tube.html)

ammm	April 14, 2013 03:10

udf for tube

hi
i want to write a udf for walls of a tube . what should i do????

billwangard

April 23, 2013 00:51

Please..

your question does not make any sense? What exactly do you want to do?

gearboy

April 23, 2013 04:26

Quote:

Originally Posted by ammm (Post 420366)

hi
i want to write a udf for walls of a tube . what should i do????

Very simple! You should first write the udf.

ammm	April 23, 2013 08:25

Quote:

Originally Posted by gearboy (Post 422517)

Very simple! You should first write the udf.

hi dear gearboy
can you explain more? i already wrote it but it has a lot of problem to run

ghost82

April 23, 2013 09:49

Quote:

Originally Posted by ammm (Post 422572)

hi dear gearboy
can you explain more? i already wrote it but it has a lot of problem to run

Then, paste here your udf!

ammm	April 26, 2013 11:37

Quote:

Originally Posted by ghost82 (Post 422597)

Then, paste here your udf!

i want to write slip velocity for tube wall and slip velocity is
u= B * du/dn

n is normal vector
fluent set in cartesian coordinate
can you help me to turn into Cylindrical coordinate???

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