Ideas for simulation

zcheng · April 27, 2020, 06:48

Hello everyone,

I would like to simulate DEM particles filling up a filter funnel where the outlet is closed during the filling process. After that I would like to liberate particles to a container near the outlet of the funnel. Does anyone has any idea on this?

Thanks a lot

ping · May 4, 2020, 08:11

have the outlet as a wall boundary during filling and to release the particles change it to non-wall boundary

zcheng · May 4, 2020, 08:58

Hello, thanks for your suggestion. I am able to do this correctly now. But what if the outlet is a surface that connects two different body?
As far as I know (not sure about this), it is not possible to insert a surface inside a 3D body, or am I wrong? Please correct me if it is wrong

ping · May 4, 2020, 10:53

easy to do by creating two region joined with an interface which starts as a baffle interface to block the particles and then is changed to an in place interface to let them pass. can also be done by having phase specific blockage at an interface or boundary for when one phase can pass eg a carrier gas but not a second phase.

zcheng · May 4, 2020, 11:00

Thanks a lot for your recommendations ping

April 27, 2020, 06:48	Ideas for simulation	#1
zcheng New Member Join Date: Jun 2019 Posts: 17 Rep Power: 7	Hello everyone, I would like to simulate DEM particles filling up a filter funnel where the outlet is closed during the filling process. After that I would like to liberate particles to a container near the outlet of the funnel. Does anyone has any idea on this? Thanks a lot

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May 4, 2020, 08:11		#2
ping Senior Member Ping Join Date: Mar 2009 Posts: 556 Rep Power: 20	have the outlet as a wall boundary during filling and to release the particles change it to non-wall boundary

May 4, 2020, 08:58		#3
zcheng New Member Join Date: Jun 2019 Posts: 17 Rep Power: 7	Hello, thanks for your suggestion. I am able to do this correctly now. But what if the outlet is a surface that connects two different body? As far as I know (not sure about this), it is not possible to insert a surface inside a 3D body, or am I wrong? Please correct me if it is wrong

May 4, 2020, 10:53		#4
ping Senior Member Ping Join Date: Mar 2009 Posts: 556 Rep Power: 20	easy to do by creating two region joined with an interface which starts as a baffle interface to block the particles and then is changed to an in place interface to let them pass. can also be done by having phase specific blockage at an interface or boundary for when one phase can pass eg a carrier gas but not a second phase.

May 4, 2020, 11:00		#5
zcheng New Member Join Date: Jun 2019 Posts: 17 Rep Power: 7	Thanks a lot for your recommendations ping