Initialization of 2 phase flow and contours issue
 

Dear CFD experts,

I am working on a 2 phase flow model and following all steps to generate the air fraction which is a bubble inside a channel. Then patch, initialize, and check contours for air phase, fluent doesn't show the air bubble. I am not sure what I do wrong but I have done this before and I did not have a problem with this part. Please let me know if you can help, this is very frustrating. Thanks, everyone. :(