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3. Constraint fields
Compared to fine, cohesive powders, the flow of granular solids is less influenced by the state of stress within the silo. Nevertheless, knowledge of the stress distribution is essential for the correct dimensioning of both the mechanical and structural aspects of the silo.
Roberts' pioneering work showed that the total pressure at the foot of the silo was less than the total weight of the particle bed per unit area (silo cross-section)....
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Unit operations. Chemical reaction engineering
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Constraint fields
Speed profiles
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
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State-of-the-art guide to silos
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