Euler–Euler simulations of condensing two-phase flows in mini-channel: Combination of a sub-grid approach and an interface capturing approach

A new model implemented in the neptune_cfd code is used to study steam condensation presence of air a mini-channel opening 100 µm. This Full Generalized Large Interface Model. It combines sub-grid approach and an interface capturing approach. The compute small flow structures, which can be bubbles or droplets, while large gas liquid films, drops. conceived simulate wide range configurations, without need for grid cells smaller than smallest structures. results show that able reproduce all patterns experimentally observed mini-channels analyzed control parameters. Both pressure drop Nusselt number (dimensionless wall heat flux) are found good agreement with experimental correlations from literature.