[M.W]

Hi everyone,

I am writing a CFD solver by Matlab. Basically I want to simulate the following physical model: I have two plates with very very closed distance, there is a single droplet within the plates. Then when the upper plate declining, the droplet spreading and the radius of the droplet is increasing.

I am using the Front Tracking Method to simulate that, and my question is: the droplet should keep the round-shape when the radius increasing, but the points on liquid-air interface move weird and the shape of interface are no longer round-shape when the time goes.

I have tried to make the mesh denser and timestep smaller, but none of them works. So I wish to find some helps or hints from the forum. Please instructed me if you have any experience on that.

Thank you in advance!

[M.W]

BTW the pic I attached is the interface points I simulate after several timestep.