1. Discharge of liquid and grains from a silo with multiple orifices.
- Author
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Rodríguez-López, D., Pacheco-Sósol, F. C., Elizondo-Aguilera, L. F., and Pacheco-Vázquez, F.
- Subjects
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POROUS materials , *SILOS , *GRAIN drying , *GRAIN size , *CELL analysis - Abstract
Using a multi-orifice cylindrical silo, the average flow rates Q1 and QN through one and N orifices, respectively, were first measured for the discharge of water or dry grains and then for the mixture. As expected, Q N = N Q 1 for monophasic discharges. Nevertheless, for the mixture, Q N ≪ N Q 1 , and the effect becomes more notorious as N augments and when the grain size is decreased. A simplified continuum model of a flow through a dynamic porous medium, with hydrodynamic resistance that increases with N, is used to reproduce the experimental results. Additional analysis in a two-dimensional cell reveals interacting parabolic flow profiles of the immersed particles close to the orifices, with a reduction in the average velocities when N is increased, which helps to understand the non-additivity of the total flow rate. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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