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Investigation of the Effect of Liquid Viscosity on the Primary Break Up Lengths and Droplet Diameter and Ligament Diameter and Instability of a Swirling Annular Liquid Sheet

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A temporal stability analysis is carried out to model the atomization of a swirling viscous annular liquid sheet subject to axi-symmetric disturbances and inviscid swirling air streams. A linear instability analysis of an annular liquid sheet emanating from an atomizer subjected to inner and outer air streams to investigate the liquid viscosity and swirl velocity on the maximum growth rate has been carried out. The dimensionless dispersion equation that governs the instability is derived. The dispersion equation solved by Numerical method. The result show that viscosity has negative and swirl velocity has positive effect on maximum growth rate and its corresponding unstable wave number that it produces the finest droplets. At low liquid swirl Weber number, liquid swirl has a stabilizing effect on the sheet whereas at high liquid swirl Weber number, liquid swirl tends to destabilize the sheet.
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Keywords: ATOMIZATION; GROWTH RATE; LINEAR INSTABILITY; PRIMARY BREAKUP; SWIRL JET

Document Type: Research Article

Publication date: June 1, 2014

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  • Journal of Advanced Physics is an interdisciplinary peer-reviewed journal consolidating research activities in all experimental and theoretical aspects of advanced physics. The journal aims in publishing articles of novel and frontier physics that merit the attention and interest of the whole physics community. JAP publishes review articles, full research articles, short communications of important new scientific and technological findings in all latest research aspects of physics.
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