# simulation of bottle emptying process

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 March 7, 2012, 00:25 simulation of bottle emptying process #1 New Member   cfd Join Date: May 2010 Posts: 7 Rep Power: 8 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

 March 7, 2012, 05:00 #2 Senior Member   shoeb khan Join Date: Nov 2011 Posts: 179 Rep Power: 6 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, 02:34 #3 New Member   cfd Join Date: May 2010 Posts: 7 Rep Power: 8 hi Thank u...i completed the simulation..can i plot the counters of pressure and velocity of air and fluid individually?

 March 8, 2012, 04:14 #4 Senior Member   shoeb khan Join Date: Nov 2011 Posts: 179 Rep Power: 6 Yes definetely you can do that but how do you know that your simulatuion is converged .

 March 8, 2012, 06:01 #5 New Member   cfd Join Date: May 2010 Posts: 7 Rep Power: 8 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...

March 8, 2012, 06:46
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shoeb khan
Join Date: Nov 2011
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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

 September 18, 2013, 08:23 #7 Senior Member   Claus Meister Join Date: Aug 2009 Location: Wiesbaden, Germany Posts: 241 Rep Power: 10 http://www.sciencedirect.com/science...6087741100536X Journal of Food Engineering Volume 109, Issue 3, April 2012, Pages 609–618 3D CFD simulation of bottle emptying processes

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