  Three different circular synthetic jet modeling inlet conditions are studied
for a turbulent crossflow. The study examines the differences when modeling the
whole SJA, neck-only or jet-slot-only under constant actuation frequency (f =
300 Hz) and crossflow blowing ratio ( CB = 0.67). Phase-averaged and
time-averaged results reveal that both whole SJA and neck-only methods
generated nearly identical flow fields. For the neck-only case, a notable
reduction in computational cost is achieved through the implementation of an
analytical jet profile. The jet-slot-only method, on the other hand, introduces
reversed flow during the ingestion cycle, leading to the injection of
false-momentum into the crossflow. However, the false-momentum primarily
affects the flow immediately downstream of the jet exit, with the boundary
layer profile recovering rapidly. A parametric study highlights the importance
of maintaining a volume ratio less than 1 of ingested to modeled neck volume to
prevent the creation of false-momentum.
