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Old   June 6, 2020, 23:08
Default Surface tension modelling
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Anshuman Sinha
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I am modeling multiphase flow, with water (green) , oil (red) , air (blue). The water is flowing through the oil, but I am having results where the air is coming in between water and oil. and separating water and oil. I think it's because of surface tension modeling.

Why is the air coming in between water and oil? Thanks

phases:

Screenshot 2020-06-07 at 7.31.13 AM.jpg

Surface tension modeling:

surface.png
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Old   June 9, 2020, 02:17
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Originally Posted by Anshs View Post
I am modeling multiphase flow, with water (green) , oil (red) , air (blue). The water is flowing through the oil, but I am having results where the air is coming in between water and oil. and separating water and oil. I think it's because of surface tension modeling.

Why is the air coming in between water and oil? Thanks

phases:

Attachment 78220

Surface tension modeling:

Attachment 78221
What's the outlet boundary condition?
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Old   June 9, 2020, 09:53
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What's the outlet boundary condition?
Right side, you may like to refer to this figure:

Screenshot 2020-06-09 at 6.22.03 PM.jpg
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Old   June 10, 2020, 16:05
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Right side, you may like to refer to this figure:

Attachment 78264
The air might be coming in between water and oil due to entrainment.
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