## 6.8. Quasi Static Wall Film Model

In ANSYS CFX, a so called quasi static wall film model is implemented that neglects the wall film movement due to external forces, such as shear stress, gravity, pressure forces, etc. In this model, wall particles interact only with their surroundings via mass transfer (evaporation) or heat transfer (wall conduction, convection).

The following topics will be discussed:

- Assumptions
- Determination of Flooded Regime
- Energy Transfer to and from the Wall Film
- Mass Transfer to and from the Wall Film
- Wall Film Thickness
- Wall Film in Moving Mesh Applications
- User Control for Heat and Mass Transfer Terms of Wall Particles

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