simulation of bottle emptying process

raki_mech81@yahoo.co.in · March 6, 2012, 23:25

hi
A viscous fluid is present in the bottle.when the bottle is inverted, due to the action of the gravity the the fluid should go out.I want to know the time required to empty the bottle.
Plz guide me the approach and boundary condition for this project

shk12345 · March 7, 2012, 04:00

Just use gravity and some liquid in the bottle

make the bottle inverted
time should be around 1-2 sec in which bottle will get empty

raki_mech81@yahoo.co.in · March 8, 2012, 01:34

hi

Thank u...i completed the simulation..can i plot the counters of pressure and velocity of air and fluid individually?

shk12345 · March 8, 2012, 03:14

Yes definetely you can do that
but how do you know that your simulatuion is converged .

raki_mech81@yahoo.co.in · March 8, 2012, 05:01

Hi
The solution will not converge because continuity equation will not balance i am running the solution till all the liquid is completely out of the bottle...It took around 1.5s to empty the bottle...

shk12345 · March 8, 2012, 05:46

Quote:

Originally Posted by raki_mech81@yahoo.co.in

Hi
The solution will not converge because continuity equation will not balance i am running the solution till all the liquid is completely out of the bottle...It took around 1.5s to empty the bottle...

let the solution converge then you can see the velocity and pressure and phase countours after the siumulation is converged

March 6, 2012, 23:25	simulation of bottle emptying process	#1
raki_mech81@yahoo.co.in New Member cfd Join Date: May 2010 Posts: 7 Rep Power: 5	hi A viscous fluid is present in the bottle.when the bottle is inverted, due to the action of the gravity the the fluid should go out.I want to know the time required to empty the bottle. Plz guide me the approach and boundary condition for this project

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March 7, 2012, 04:00		#2
shk12345 Senior Member shoeb khan Join Date: Nov 2011 Posts: 161 Rep Power: 3	Just use gravity and some liquid in the bottle make the bottle inverted time should be around 1-2 sec in which bottle will get empty

March 8, 2012, 01:34		#3
raki_mech81@yahoo.co.in New Member cfd Join Date: May 2010 Posts: 7 Rep Power: 5	hi Thank u...i completed the simulation..can i plot the counters of pressure and velocity of air and fluid individually?

March 8, 2012, 03:14		#4
shk12345 Senior Member shoeb khan Join Date: Nov 2011 Posts: 161 Rep Power: 3	Yes definetely you can do that but how do you know that your simulatuion is converged .

March 8, 2012, 05:01		#5
raki_mech81@yahoo.co.in New Member cfd Join Date: May 2010 Posts: 7 Rep Power: 5	Hi The solution will not converge because continuity equation will not balance i am running the solution till all the liquid is completely out of the bottle...It took around 1.5s to empty the bottle...