Fluid Flow mode for the G2 example simulation

Fluid Flow mode serves as an intermediate calculation before the dynamic simulation. Process mode performs flow-driven, steady-state calculations that are a good basis for subsequent process design. When you switch to Fluid Flow mode, the simulation changes from a flow-driven model to a pressure-driven model. Instead of specifying the flowrates in this mode, you typically calculate the flowrates by balancing the pressures on each piece of equipment.