At the moment, FluidFlow doesn't have an eductor node. There is however a workaround for this type of scenario as per the example below.
Figure 1 shows a scenario where we have an eductor.
Figure 1
A model of the above system has been developed in FluidFlow as per Figure 2 below. The pump in this sample system is set to Automatically Size with a design flow rate of 50 m3/h. The fixed flow inlet is set to have a design flow rate of 10 m3/h and the resultant total combined flow rate is therefore 60 m3/h.
Figure 2
You can also add the eductor pump curve to the pumps database (as a centrifugal pump). If you wish to use this approach, you will need to reset the Automatically Size function for the pump to OFF and select the new pump model you have added to the database.