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This paper investigates the characteristics of the near field of the granular jet (e.g., diameter of granular jet core d c , width of dispersed jet d, and thickness of boundary layer δ). Through image analysis, we find that particle superficial velocity has an important influence on those characteristics. In addition, d and δ linearly grow with the distance from the nozzle exit at first and...
The granular jet can behave macroscopically like a liquid jet and its dispersion process is similar to the breakup of the liquid jet by an annular air jet. In this paper, the particle dispersion characteristics of a granular jet by an annular air jet, such as the undisturbed length, the dispersion length and the dispersion angle, have been investigated experimentally with a high-speed camera. The...
An investigation of the dispersion mode of the granular jet in a coaxial air jet has been conducted. In all cases, the dispersion mode is dominated by the outer air jet. Three dispersion modes, namely, the shear dispersion (ug<24m/s), wave dispersion (24m/s<ug<U2) and oscillating dispersion (ug>U2), are identified. U2 increases with the granular jet mass flux and the particle diameter...
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