Depressurization of CO2-rich mixtures in pipes: Two-phase flow modelling and comparison with experiments

In general, good agreement with the experiments is obtained, including the dry-out point where the liquid in the pipe has evaporated. For the friction and heat-transfer models tested, the two-fluid model did not provide substantially better predictions than the homogeneous equilibrium model. The effect of different heat-transfer models is also discussed. In our case, it is necessary to take the pipe heat capacity into account.