Abstract
Researches for stabilizing a plain liquid film are not still sufficient for industrial applications. The improvement of film-forming technology through thin-film jet flow for the purpose of maintaining freshness in food products and protecting operational environments of electronics systems is crucial in these industries. A new nozzle using a composite flow network has been developed for plain air film stabilization without film break. The design consists of a slit duct with layers of diamond-shaped cylinder bundles. An experimental study was performed to investigate flow characteristics of efflux in composite flow networks by means of PIV. It is disclosed that it is conceivable to extend longitudinal vortex flow in composite flow networks through interacting with flip-flop flow exiting from a pre-fixed multiple-intersecting flow network in order to strengthen and thus stretch its efflux.
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