Homogeneous hydraulic and pneumatic conveying of solid particles

A discussion is provided of the difficulties and limitations involved in the application of the one-dimensional two-phase flow model to estimate pressure gradients associated with the transport of particles. Two particular cases are investigated, namely, hydraulic conveying and pneumatic transport....

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Bibliographic Details
Published in:Powder technology 2000-03, Vol.108 (1), p.46-54
Main Authors: Ferreira, Maria do Carmo, Freire, José T., Massarani, Giulio
Format: Article
Language:English
Subjects:
Applied sciences
Continuous conveyors: mechanical, hydraulic, pneumatic, etc
Exact sciences and technology
Fluid dynamic modeling
Hydraulic conveying
Material handling, hoisting. Storage. Packaging
Pneumatic conveying
Pressure gradients
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Summary:A discussion is provided of the difficulties and limitations involved in the application of the one-dimensional two-phase flow model to estimate pressure gradients associated with the transport of particles. Two particular cases are investigated, namely, hydraulic conveying and pneumatic transport. The validity of the model is checked by comparing experimental data with predicted values of pressure gradients and void fractions. New approaches for estimating the interaction forces in hydraulic and pneumatic transport are proposed. It is demonstrated that, despite its limitations, the two-phase flow model may provide good predictions for the pressure gradients.
ISSN:0032-5910
1873-328X
DOI:10.1016/S0032-5910(99)00245-4