The CFD-ACE+ code has the capability
to model a wide range of two-phase flows using several techniques including
the following:
- Eularian Lagragian (Spray/Particles Module)
- Free Surface Volume of Fluid (VOF Module)
- Enthalpy based method for solidification and melting by neglecting
velocity slip
- Eularian two-fluid model
The Eulerian Two-Fluid model simulates flows of two fluids that are treated
as continuous, interspersed media (as opposed to the two continuous but
separated phases treated by the Free Surface or VOF Module). This method
can also be used to simulate a single continuous phase with a second discrete
phase. In this sort of application it has some overlap with the Spray/Particle
Module. Typical examples suitable for the two-fluid method include:
- Bubbly flows (gas and liquid)
- Particulate flows (solid and gas)
- Flows in oil and water separators (liquid and liquid)
In the two-fluid method, two sets of conservation equations are solved,
one for each phase. There are several different options in this model
to account for the inter-phase drag between the two fluids. The two-fluid
model is currently being revised for improved robustness and hence it
is only available for customers with special collaborations.
The CFD-ACE+ two-phase capabilities have been validated and
used for a wide range of applications as evident on many pages of this
site.
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