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Air-Water Multiphase VOF Simulation

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Old   September 27, 2022, 10:23
Default Air-Water Multiphase VOF Simulation
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Abhishek Shingala
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In air water VOF simulation, water flow is laminar, but the air may not.
As I am using adaptive mesh refinement, wall y+ around water flow is very low, but everywhere else because of the coarse mesh wall y+ value is between 7-14. Should I use turbulence model?
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Old   September 27, 2022, 10:33
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Quote:
Originally Posted by Abhishek Shingala View Post
In air water VOF simulation, water flow is laminar, but the air may not.
As I am using adaptive mesh refinement, wall y+ around water flow is very low, but everywhere else because of the coarse mesh wall y+ value is between 7-14. Should I use turbulence model?



What is the goal of the simulation? Do you really need to describe accurately the stress transmitted to the air by the water jet ? If yes, you need to resolve the mixing layer air-water with a fine grid
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Old   September 27, 2022, 10:37
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Well, it is just filling simulation. Like filling oil in the enclosed housing completely from inlet, while doing that air will moves outwards from outlet.
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Old   September 27, 2022, 10:49
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Well, it is just filling simulation. Like filling oil in the enclosed housing completely from inlet, while doing that air will moves outwards from outlet.



Thus, you really don't need of any details of air turbulence...
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