I am doing CFD analysis of two phase (Water-Air) flow in T junction vertical channel of 2 mm diameter. Will I gravity affects on flow patterns for such a mini channel?
It depends upon the strength of the gravitational field.
What about swirl, though?
__________________
"Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
If you mention 2 phase flow this means that you have air bubbles. The effect of gravity will be function of the relative bubble dimension with respect to the channel diameter.
Around every bubble there is a layer which has a thickness depending on the relative speed between bubble and fluid flow.