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Multiphase Science and Technology
SJR: 0.124 SNIP: 0.222 CiteScore™: 0.26

ISSN Imprimir: 0276-1459
ISSN On-line: 1943-6181

Multiphase Science and Technology

DOI: 10.1615/MultScienTechn.v26.i4.40
pages 329-349

PNEUMATIC CONVEYING THROUGH A HORIZONTAL PIPE: NUMERICAL PRESSURE DROP

Brundaban Patro
National Institute of Technology Warangal, Telangana 506004, India

RESUMO

The present paper predicts the numerical pressure drop in air−solid two-phase flows in a horizontal pipe with an internal diameter of 30 mm using four-way coupling. In four-way coupling, the dispersed-phase collisions are the significant momentum exchange mechanism. Using the present model, the predicted pressure drop in the two-phase flows is in satisfactory agreement with the published experimental data. It is observed that the pressure drop increases with an increase in the solids volume fraction, particle density, particle diameter, and inlet air velocity for particle diameters up to 50 µm. Finally, using nonlinear regression analysis, a correlation for the two-phase pressure drop is developed with an accuracy of ±10%. The correlation can be used to find the two-phase pressure drop in air−solid flows.


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