As the theory manual, "A single momentum equation is solved throughout the domain, and the resulting velocity field is shared among the phase. So how Fluent calculates the velocity at the interface? Thanks

# How Fluent calculate the shared velocity at the interface using VOF method

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- Last Post 19 February 2020
- Topic Is Solved

kkanade
posted this
18 February 2020

Based on the local value of α_q, the appropriate properties and variables are assigned to each control volume within the domain

kkanade
posted this
18 February 2020

if this help you, please mark this post as 'Is Solution' to help others.

abenhadj
posted this
18 February 2020

There is only one single velocity field. As kknade highlighted all other properties like density, viscosity are phase averaged. Fluent does a sort of mass weighted average here to get the bulk velocity.

Just add the equations from Eulerian Model together and you will get the ones for Mixture and VOF model. This is not Fluent only this is also Test Book and all Multiphase References.

Please mark this as Is solved.

Best regards, Amine

Billyyee
posted this
18 February 2020

Billyyee
posted this
18 February 2020

abenhadj
posted this
19 February 2020

With density to weight and divide by bulk density

Best regards, Amine

Billyyee
posted this
19 February 2020

Thanks.

Bill

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