FLUENT Spreading diameter surface monitor query
 

Hello.
I am simulating droplet impact onto a solid surface using 2D axisummetrical conditions for the VOF model.

Does anybody have any suggestions concerning how to extra the data from FLUENT to create graphs for spreading diameter vs time and flattening height vs time.

I know I have to go to surface monitors and choose time step. I think I have to select Facet max y coordinate/minimum x coordinate in the mesh but I am not sure what surface to select.

My available surfaces are central symmetry axis for air and droplet, the curve of the droplet which is of the interior type of boundary, 2 pressure inlets and a non slip wall.

Any suggestions will be much appreciated :)

Please does anybody have any suggestions? :)