Publication de 4 numéros par an
ISSN Imprimer: 1065-3090
ISSN En ligne: 1940-4336
Indexed in
DIAGNOSIS OF COMPOSITE FLOW NETWORKS
RÉSUMÉ
Flow network consisting of a system of intersecting tubes or channels is most abundant in nature such as a circulatory system in a human body, drain system in soils, and others. Flow characteristics in flow networks have been investigated for two decades, including a single pair of cross flow and multiple pairs forming diamond-shaped cylinder bundles. Recently, research has been extended into the second generation, namely composite flow network consisting of conventional (the first generation) flow networks arranged in series, parallel, and their combination. This step of investigation is analogous to the simulation of the circulatory flow system.
An experimental study is performed on a composite flow network consisting of one flow network in series with two in parallel sandwiching a thin-film jet. Particle-injection type flow visualization method, particle image velocimetry (PIV), and laser Doppler velocimetry (LDV) are employed to determine flow patterns, velocity vector distribution, vorticity distribution, Reynolds-stress distribution, and power spectral distribution. It is disclosed that a thin-film jet may be stabilized by means of a composite flow network.