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October 31, 2019, 04:41 |
Multiphase model
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#1 |
Senior Member
Davide
Join Date: Jul 2015
Posts: 107
Rep Power: 10 |
Hi,
I want to simulate the forming of a glass bottle inside a mold. I want to use a VOF model. Does anyone have advice on using a homogeneous or inhomogeneous model? In the inhomogeneous case how do you set up a sensible Drag coefficient? Furthermore, what about the morphology of the material what would you set to glass and what to air? Continuos fluid for both? Or dispersed fluid? |
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October 31, 2019, 08:14 |
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#2 |
Senior Member
Gert-Jan
Join Date: Oct 2012
Location: Europe
Posts: 1,831
Rep Power: 27 |
To be honest, I would not use CFX for this but e.g. Moldflow.
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October 31, 2019, 08:30 |
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#3 |
Senior Member
Davide
Join Date: Jul 2015
Posts: 107
Rep Power: 10 |
Instead in CFX how would you set this problem?
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October 31, 2019, 17:03 |
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#4 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,706
Rep Power: 143 |
Ignoring the fact that CFX is not ideal for this simulation.....
My understanding of glass blowing is that the glass has a coherent free surface interface for the entire process, so no bubbles, foam or mist. In this case a homogenous free surface model should be suitable. This means drag coefficients are not required. For tips on how to set up a free surface simulation look at the CFX tutorial examples. "Free surface flow over a bump" is the relevant here I think.
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