Difference btwn F_PROFILE and PROFILE(GUI)
 

Hello,

Is there anybody that can explains to me the difference between the UDF F_PROFILE and the gui command PROFILE?

In the second there is an interpolation, but in the udf i shell assign the right variables value in the exact face center coordinate...it's right?

Thank you!

Hi,
I think they are similar. if you don't use exact coordinates, they'll interpolate between nodes. F_PROFILE is a programmable tool to generate profiles.

Thank's Amir for replay,

my objective is that the bc's that i'll impose will not be modified by fluent by some kind of interpolation, and i hope that F_profile can do this.

you can do that with both of them if you implement the exact coordinates of faces.
in this point of view F_PROFILE is better because it automatically uses face centroids but in <profile> files, it's possible but of course has some difficulties.

profil
 

but in profile how can we display it ?????????

you can do few iterations (it's not necessary to converge ) and plot your variable.
for unsteady cases you can also plot that in {solve->monitor->surface} during time ....

RE:prof
 

In the xy plot panel you can find 'interpolated data',

where it shows you in wich way the datas have been readed from the profile input