Ansys CFX allows the modeling of multiphase multicomponent flows. Information on multicomponent, single-phase flows is available; for details, see Multicomponent Flow. One component in each phase must be calculated using a constraint component in the same way as for single-phase multicomponent flow. The limitations that currently apply to single-phase multicomponent flow also apply to multiphase multicomponent flow. You should note that the molecular diffusion coefficients are calculated using the Kinematic Diffusivity set on the Fluid-Specific Details tab for a domain in CFX-Pre. For details, see Component Details in the CFX-Pre User's Guide.

Source terms in multicomponent multiphase flow behave in the same way as multicomponent mass sources, but on a per fluid basis. For details, see Sources in Multiphase Flow.