[kevinllll]

I used fluent 19.0 to simulate the evaporation of a single droplet，using vof。When I set the boundary condition to a wall, the droplet is in a closed environment.The volume fraction of the droplet is going to be smaller.But when I set the left side as velocity inlet , the right side is set as a pressure outlet,a wall on top and a symmetric boundary underneath.Evaporation is happening but the droplet volume fraction does not change .I have attached a cloud image of the liquid phase.Why does the droplet volume not change when the rate is added