Hi, I’m trying to simulate a T-junction according to [W Wang, Z Liu, Y Jin, Y Cheng, LBM simulation of droplet formation in micro-channels, Chemical engineering journal, 2011] but in this article they have used the ratio 2 for dynamic viscosity, because in MC-SC model we should use the unit density ratio, I used the ratio 2 for kinematic viscosity to set the equal condition but it lead to produce negative densities, in my simulation. I used the same formulas but why this happen?
The other question is for calculating the surface tension I use a static droplet but when I’m simulating the micro-channels, by changing the outlet pressure the densities change, doesn’t this lead to change in surface tension and Ca number ?
thanks