UDF for drag force
 

Dears Members,

Anyone has some experience for writing an UDF to introduce the drag force in a multiphase flow modeled by VOF model enable?

More specified, I simulate the CO2 bubble absorbed in methanol liquid, the CO2 is inlet to the reactor from a hole on the bottom.
my governing equations are continuity and momentum equations for he incompressible two-phase flow as follows:
http://muchongimg.xmcimg.com/data/bc...012238_823.png
http://muchongimg.xmcimg.com/data/bc...#opennewwindow
http://muchongimg.xmcimg.com/data/bc...#opennewwindow
and now I want to add the drag force source term to the momentum equation with UDF code.

is there anyone can help me? this problem has been bothering me for a long time

hello, did you solve the problem?