plz help me???
 

hi everybody :)!!


first i solved my profile with fluent;) ! but in the outlet boundary condition i use pressure outlet = 0 :rolleyes:!
but i know that its not true ! there is a pressure profile!! p=(Ro)*g*y

then i need to write a udf ! otherewise i should neglect gravity that this assumption is really fake:D!!!!!!

i have a problem with udf !!! i didnt write any udf before!
what should i do? is there any one:) to help me? how can i write UDF? is it difficult? :confused:


SaHa

online help / section UDF / Chapter 8 / Section 8.2.1 (boundary condition)

hi dear mAx:):) !
the profile is 3D ! then should i write 3 udf ?pressure in x,y & z direction:rolleyes:?

how i can find the parameters that used for define pressure in fluent code ?????:eek:

thancks

I would say: online help / section UDF / Chapter 3 / Section 3.2.3

:):):)hi dear mAx:):):)!

there is another question:rolleyes: ! i get a case & dat files of fluent!
i find that one of its boundary condition is a udf:eek: !

is there any way that i can see this udf in fluent?[i havent the source:o], i wanna understand outlet bc!


im really thankful:)

SaHa

Are you able to start the calculation without error?
If I correctly remember, you need the source file (but I am not sure)

yes ! i can start it !!!!!!!! :rolleyes:

and no libudf folder?
If no, then I don't know how to see the source code

hi saga,
i also face this type of probe...... my problem is solved with the help of GAMBIT........

hi alagesen:)! may you explain?
i really neeeeeeed! which part:confused:? plz!

hi mAx!!!:):):)
i find a file in the folder that case & Dat file is saved:rolleyes:! but type of this file is not clear:eek: !!!! in its properties the type of that is : File !!!

is it the libudf folder?:rolleyes:


SaHa

libudf folder is .... a folder, not a file
try to edit the other file (with wordpad or whatever)

i opened this file by notepad:)!!sth like this:eek:!!((pressure_outlet.1 point 795)
(x
41.599998
41.599998
41.599998
41.599998
41.599998
.
.
.
-13.328334
-12.861667
.
.
.
130806.4
230468.64
221447.75
214931.27
208154.23
201285.17
194381.27
187493.72
180635.39
173782.02
166932.14
160089.52
153296.95
146747.92
140355.22
130910.8
)
)
:confused:

this is a profile
check online help

Really tanx , dear mAx !! ya I get it !!