### 8.6.5. Interface Boundaries

If your simulation includes any solid domains, then you may want to set particle options at the fluid-solid interface. To do this, you should first create the required fluid-solid domain interfaces, and then edit the automatically created interface boundary condition for the fluid side of the interface. The options on the fluid side of fluid-solid interfaces are specified in the same way as for wall boundaries. For details, see:

- Wall Boundaries

- Interface Boundary Conditions in the CFX-Pre User's Guide.

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