How to plot the radius of a droplet's fall with Fluent

baechtel · April 30, 2009, 23:56

Hi everybody,

I just did a simulation of a blood droplet impact onto a solid surface with the VOF model. I have catched a sequence and datas at different time step.
But is it possible to plot the radius of the droplet depending on the time with Fluent ?

Thank you very much for answer,

Baechtel Guillaume

Ralf Schmidt · May 1, 2009, 04:51

Hi!

just an idea, i don't know, if this is working...

- create multiple lines perpendicular to the flight path of the droplet.

- every time step, plot the liquid fraction on every line. So you gonna have some plots that look like:

000000000000000000000000
000000001111100000000000
000000111111111000000000
000001111111111100000000
000001111111111100000000
000000111111111000000000
000000001111100000000000
000000000000000000000000

with that lines, you might calculate the droplet diameter (the coordinates, where you have a transition between 0 and 1).

No idea, if this will work.... And maybe there are much better possibilities....

Best wishes
Ralf

April 30, 2009, 23:56	How to plot the radius of a droplet's fall with Fluent	#1
baechtel New Member baechtelguillaume Join Date: Apr 2009 Posts: 13 Rep Power: 17	Hi everybody, I just did a simulation of a blood droplet impact onto a solid surface with the VOF model. I have catched a sequence and datas at different time step. But is it possible to plot the radius of the droplet depending on the time with Fluent ? Thank you very much for answer, Baechtel Guillaume

May 1, 2009, 04:51		#2
Ralf Schmidt Member Ralf Schmidt Join Date: Mar 2009 Location: Austria Posts: 67 Rep Power: 17	Hi! just an idea, i don't know, if this is working... - create multiple lines perpendicular to the flight path of the droplet. - every time step, plot the liquid fraction on every line. So you gonna have some plots that look like: 000000000000000000000000 000000001111100000000000 000000111111111000000000 000001111111111100000000 000001111111111100000000 000000111111111000000000 000000001111100000000000 000000000000000000000000 with that lines, you might calculate the droplet diameter (the coordinates, where you have a transition between 0 and 1). No idea, if this will work.... And maybe there are much better possibilities.... Best wishes Ralf __________________ CFD - nothing but Colourful Fluid Dynamics

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