Hi there! Does anybody know, where I can get a free visualization software package for analyzing FLUENT/UNS 3D output data?

I don't know FLUENT/UNS, and it really doesn't matter what code you're using so long as you know what the data output format from your CFD runs is. Then:

Visual3 developed by Bob Haimes at MIT is a fast package that requires minimal programming (to input your data as you want it). Check the following site for details:

http://raphael.mit.edu/visual3/visual3.html

I just found out that ICEM-CFD has released a "new" product based on this package.

Adrin Gharakhani