### 16.2.2. Multiphase Bulk Sources

In a multiphase simulation, source terms that apply to all fluids in the simulation are set on the Sources tab. Bulk sources take account of the volume fraction of each phase when applying the source term. For details, see Bulk Sources in the CFX-Solver Modeling Guide.

- Select Bulk Sources to specify bulk sources. Bulk sources apply to all fluids in a multiphase simulation.

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