3. Dwell time distribution (DTS)
Despite its importance, very few studies, either experimental or theoretical, have been carried out on the residence time distribution (RSD) of granular solids in silos.
Generally, residence time is defined as the time required for a particle to move from its initial position to exit the silo. Cleaver and Nedderman have established an expression for residence time in conical hoppers with bulk flow. Considering a radial flow (radial flow model shown in figure
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Unit operations. Chemical reaction engineering
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Dwell time distribution (DTS)
Bibliography
Software tools
Silo Stress tool: free software for calculating vertical and horizontal stress profiles.
http://www.dietmar-schulze.com
LIGGGHTS®: open source software for the simulation of granular media using the Discrete Element Method (DEM).
...Websites
UNIT module (open-access distance learning course): "Powder Science and Technology".
Dietmar Schulze
http://www.dietmar-schulze.com
Freeman Technology
Events
World Congress of Particle Technology (event held every 3 years).
PARTEC International Congress on Particle Technology, Nuremberg, Germany (annual event).
International Conference on Conveying and Handling of Particulate Solids (CHoPS) (event held every 3 years).
Powders & Grains (event held every 4 years).
Regulations
State-of-the-art guide to silos :
http://www.installationsclassees.developpement-durable.gouv.fr
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
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