Iso-surface plot
 

Dear Fluent User,

I am modeling cavitation in 3-D Nozzle. I try to plot cavity as in the picture below ( the cavity appare in the Nozzle hole). I tried to use Iso-surface but it not work as I expect.
Could some one help me how to do that?
Thank you very much!

(Sorry I dont know hoe to add image in the forum)

This is the image of my model
http://img577.imageshack.us/img577/2517/3p2f.jpg
And this is the example cavity plot which I want to do
http://img29.imageshack.us/img29/1276/xmi6.jpg

I don't understand: are you asking by which variable you want to the create the iso-plot?

You may create the isoplot by means of the void fraction and then using another variable for post-processing on the created surface

Thank you,
I mean do you know how to use Iso-surface or onothe option in Fluent to plot the cavity structure as in picture I posted above?
I used contour plot but it just show the position of cavity and we could not see the cavity struture(3D), also I tried to use Iso-surface as advice from anothe topic in Forum or in Fluent guid, but it still not work

by which variable is the cavity specified? VOF or anything else?

Yes, the VOF

then follow my first reply and then we will see

Thank Zaktatir,
But could you tell me detail how to do that? I dont clearly understand you reply

-1/Create a Surface by Iso-Value (Iso-Surface)
2/ Choose VOF as the variable of interest and give a reference Value
3/Then you have now a new surface which may be used for further post-processing


By the why how high is the void fraction for your cavity (0,5?)?

I dont kown what value should use, because the VOF value from 0.1 to 0.9