Numerical Modelling of Water Flashing at Sub-Atmopsheric Pressure with a Multi-Regime Approach

The CFD numerical study of the flash boiling phenomenon a water film was conducted using an Euler–Euler method, and compared to experiments on flashing film. is initially heated at temperatures ranging from 34 74 ∘C (frim 1 41 superheat), pressure decreased bar 50 mbar during experiments. This paper shows that could not be correctly modelled by simple liquid/bubble model because overestimation drag force above (in gas/droplet region). generalised large interface (GLIM), however, multi-regime approach implemented in version 7.0 neptune_cfd software, able differentiate film, where interactions are predominant gas region predominant, gives nice qualitative results. Finally, this interfacial heat transfer Berne for superheated liquids accurately predict evolution temperature over time.