Abstract
The turbulent jet produced by the air-carrier from a dual-port, air-atomizing nozzle was experimentally characterized. Air velocity and turbulence characteristics were determined using single- and dual-probe hot-film sensors. Velocity decay along the primary axis and profiles normal to the primary axis agreed closely with common turbulent jet models. Turbulence intensity and shear stress measurements agreed closely with previously published data.The results indicated that circular (axially symmetric) and axially similar turbulent jet models of a single source closely described flow in the fully developed region from a dual-port nozzle. Entrainment rate of ambient air into the jet was more rapid than for a circular jet. Equations of mass and momentum flow rate were developed and agreed closely with experimental data.
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