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Silo Discharge: Measurement and Simulation of Dynamic Behavior in Bulk Solids
Author(s) -
Böhrnsen J.U.,
Antes H.,
Ostendorf M.,
Schwedes J.
Publication year - 2004
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200401913
Subject(s) - silo , information silo , finite element method , computer simulation , deformation (meteorology) , stress (linguistics) , process (computing) , engineering , nonlinear system , mechanics , structural engineering , geotechnical engineering , mechanical engineering , materials science , simulation , computer science , physics , composite material , operating system , linguistics , philosophy , quantum mechanics
This paper deals with the experimental investigation and the numerical simulation of silo discharge processes, including dynamic interactions between the silo filling and the elastic silo walls. The discharge process is described by a system of nonlinear differential equations. Via the Finite Element Method (FEM) based on an EULERian reference frame, the deformation rate, the velocity field, the porosity, and the stress distribution can be calculated without the need of re‐meshing the FE‐grid. To compare simulation results with measured data, the numerical simulation examples are chosen to be similar to an experimental test‐silo of the Institute of Mechanical Process Engineering at the Technical University of Braunschweig. Optical measurement techniques are applied to investigate the flow profile, and load cells on the silo walls register the stress evolution, e.g., a stress peak (switch) moving from the outlet to the transition from hopper to shaft.