Downward lean powder flow in a vertical tube
作者： Shun Wachi , John G. Yates
DOI: 10.1016/0009-2509(91)85086-D
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摘要: Abstract The flow dynamics of a gas—solid mixture were investigated for downward polyvinyl chloride powder in vertical tube fitted with fluidized bed on the top. Powder was charged from top to lean part through perforated plates. Radially non-uniform distributions flux, solid holdup and particle velocity determined by sampling photographic observation tube. A prediction method dynamics, including choking phenomenon effect scale-up, is presented terms development two-phase turbulent circulation theory incorporated kinematic viscosity.
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