For simulations that involve the DPM or DEM models, when Floating Operating Pressure is enabled, the pressure force that Ansys Fluent returns to System Coupling will include the particle contribution due to particle-wall interactions:

(14–3)

where is the DPM wall normal pressure due to particles interacting with the wall. For more information, see section Force transferred to System Coupling from a Wall Boundary in the Ansys Fluent User's Guide.