modeling droplet falling to the bottom problem

TimLim · May 15, 2018, 02:15

Hi, I'm trying to figure out which setting is necessary to simulating droplet behavior properly, which is a simple droplet falling toward the flat surface, for practice.
I applied gravity, surface tension and viscous flow modules.

What I thought is that the droplet is broken into small particles and splashed in all directions after the impaction of the droplet with the bottom side,
but the simulation result is that the droplet is just spread on the bottom side, coated thinly until it arrives at the mesh boundary. (I didn't set boundary condition as I'm just interested in droplet splashing part)

Is there anyone who can guess the reason for this phenomena or point out what I thought improperly, it would be a great help for me and I appreciate.

Below are links to the result movies.

https://drive.google.com/file/d/1hUd...ew?usp=sharing

https://drive.google.com/file/d/1tlO...ew?usp=sharing

thunde47 · June 15, 2018, 17:03

Try changing the pressure solvers and see if you notice a difference in results.

May 15, 2018, 02:15	modeling droplet falling to the bottom problem	#1
TimLim New Member TG Lim Join Date: May 2018 Posts: 1 Rep Power: 0	Hi, I'm trying to figure out which setting is necessary to simulating droplet behavior properly, which is a simple droplet falling toward the flat surface, for practice. I applied gravity, surface tension and viscous flow modules. What I thought is that the droplet is broken into small particles and splashed in all directions after the impaction of the droplet with the bottom side, but the simulation result is that the droplet is just spread on the bottom side, coated thinly until it arrives at the mesh boundary. (I didn't set boundary condition as I'm just interested in droplet splashing part) Is there anyone who can guess the reason for this phenomena or point out what I thought improperly, it would be a great help for me and I appreciate. Below are links to the result movies. https://drive.google.com/file/d/1hUd...ew?usp=sharing https://drive.google.com/file/d/1tlO...ew?usp=sharing

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June 15, 2018, 17:03		#2
thunde47 Senior Member thunde47 Join Date: Dec 2015 Location: India, USA Posts: 129 Blog Entries: 1 Rep Power: 10	Try changing the pressure solvers and see if you notice a difference in results.