[StormedStar]

Dear all,

I am simulating the flux of air in a system in which a droplet is suspended in a glass (as attached), but there are only defined the droplet phase (liquid) and air (air). So I use VOF with laminar only.

The problem is that when I compute the solution only with a velocity defined, 0 gauge, and 1 of Volume fraction of species 2 in inlet (air enters the system) and I patch that air is air (1) and droplet is liquid (1) the results that I obtain are strange.

To begin with the solution is very slow, I have tried constant step and not constant and the solution always is behaving like increasing and decreasing constantly.

When I see the results for a low time step I see that in less than 0.01 seconds, the water goes out of the droplet (not logical) and the pressure inside the droplet increase a lot

So what is the problem? the only thing that I find strange in the configuration is that the interface water-air (droplet surface) is duplicated


Thanks for all

[SaufiSangi]

Hi Carles,
which software are you working with (Fluent/OpenFOAM)? This may be a problem of spurious currents. What is the diameter of your droplet?