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23 May 2005

Volume 86, Issue 21, Articles (21xxxx)

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Appl. Phys. Lett. 86, 213111 (2005); http://dx.doi.org/10.1063/1.1931027 (3 pages)

R. H. Miwa, W. Orellana, and A. Fazzio
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Enhanced liquid atomization: From flow-focusing to flow-blurring

Alfonso M. Gañán-Calvo

Appl. Phys. Lett. 86, 214101 (2005); http://dx.doi.org/10.1063/1.1931057 (3 pages) | Cited 12 times

Online Publication Date: 16 May 2005

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This letter describes the generation of small turbulence scales in connection with a singular back-flow pattern leading to efficient atomization. A simple pneumatic atomizer configuration results, with a tenfold efficiency increase over available plain-jet air-blast atomizers. Back-flow atomization derives from a global bifurcation of the liquid-gas flow pattern; the bifurcation is triggered by a single geometrical parameter of the atomizer. The extremely simple geometry involved can be implemented down to the micrometric scale, thus opening the door to the improvement of current atomizers and to unprecedented designs.
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47.55.Kf Particle-laden flows
47.54.-r Pattern selection; pattern formation
47.20.Ky Nonlinearity, bifurcation, and symmetry breaking
47.27.wg Turbulent jets
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