Simulation of ligament mode breakup of molten slag by spinning disk in the dry granulation process
作者： Dongxiang Wang , Xiang Ling , Hao Peng
DOI: 10.1016/J.APPLTHERMALENG.2015.03.003
关键词: Volume of fluid method 、 Viscosity 、 Forensic engineering 、 Ligament 、 Breakup 、 Capillary action 、 Materials science 、 Capillary wave 、 Rayleigh–Taylor instability 、 Mechanics 、 Surface tension
摘要: Abstract This paper performed the numerical investigations on physical mechanism of ligament mode breakup molten slag at spinning disk edge by volume fluid methodology, piecewise line interface calculation scheme is utilized to track air-slag location. Ligament spacing, length and tip diameter, droplet size have been analyzed, a spacing model for viscous fluids developed theoretically based Rayleigh Taylor instability analysis. Viscosity always produces damping effect appearance ligament. The ratio diameter proportional We0.447. Due circumferential surface tension, ligaments tend pinch-off type formation mode, final result destabilization capillary waves. stretching caused centrifugal effect, wavelength about 2.2–3.1 times diameters. However, actual dominant short-wave driven propagative wave from tip.
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