An engineering model of dilute polydisperse pneumatic conveying

• Published in: Chemical engineering and processing Vol. 46; no. 3; pp. 247 - 256
• Main Authors: Eskin, D., Leonenko, Y., Vinogradov, O.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01.03.2007; Elsevier
• Subjects: Applied sciences; Chemical engineering; Exact sciences and technology; Gas flow; Handling and storage of chemicals. Piping; Hydrodynamics of contact apparatus; Particle interactions; Particle motion; Pneumatic systems; Pressure reduction; Solids flow; Pneumatic systems; Pressure reduction; Solids flow; Gas flow; Particle interactions; Particle motion; Molecular dynamics method; Hydrodynamics; Momentum; Pneumatic conveyance; Particle collision; Modeling; Friction; Pressure drop; Particle interaction; Polydispersed particle
• ISSN: 0255-2701; 1873-3204
• DOI: 10.1016/j.cep.2006.06.005

A model for a gas-polydispersed particle flow in a pipeline is presented. The chaotically moving particles of different sizes are represented as sets of granular gases having different granular temperatures. The latter are generated due to partial momentum loss of particle–wall collisions as well as due to collisions of particles of different sizes with each other, and dissipated because of partially inelastic particle–particle collisions and also due to the particle–gas viscous friction. The model developed has been validated by comparison of the calculated pressure losses with the experimental data. The granular temperatures calculated by the model have been compared to those computed by the molecular dynamics code. A comparison is also made on the effect of polydispersity on pressure losses.