Eulerian model for water rimming in cylinder

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ham_nola posted this 07 May 2019

Hi

I have liquid water in cylinder filling say 20% of the volume and the cylinder wall is given a wall motion (see Figure). The water will start moving due to wall motion. If the speed is high enough water creates a rim.

Can I use the Eulerian model for this problem! Thank you.

 

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abenhadj posted this 08 May 2019

Yes.

Best regards,

Amine

ham_nola posted this 08 May 2019

But isn't Eulerian model for dispersed flow and this is not dispersed flow? I read it in the Detailed guidelines for multiphase models!

ham_nola posted this 08 May 2019

I mean in the Eulerian model the secondary phase is defined as a dispersed phase with a specific diameter. Does the secondary phase (dispersed phase) have the capability to combine and form a stratified layer??

abenhadj posted this 08 May 2019

Yes it does have. The Eulerian model is the most general multiphase model and is suitable for a flow regimes. You can consider that diameter specification for this case as a sort of numerical mean to calculaate drag, etc... You can combine Eulerian Model with VOF for separated flows.

Best regards,

Amine

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ham_nola posted this 08 May 2019

Is "Multi-fluid VOF" the option to use when combining the Eulerian model with VOF for separated flows?

Thank you.

abenhadj posted this 13 May 2019

if there is a clear separated region between the phase and where you afford grid resolution MultiVof is appreciable. Best used with zobal discretization

Best regards,

Amine

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