Rob
Ansys Employee

Hi Mauro,


As abenhadj has noted, as ANSYS staff we can't be too specific with answers, and you may have seen us use forms of "unfortunately this question is the beyond the scope for ANSYS employees to answer on a public forum, so hopefully other student community users can chime in" elsewhere. 


Having said that, the results do look odd if you have all of the phase material composition set at the sparger and top boundary: the gas volume fraction looks fairly sensible. So, check your settings, and also look at convergence as I can't think of a scenario where the gas would suddenly lose all of one component in normal operation. 


Good luck with the project. Have you spoken to your supervisor?


Cheers,
Rob