Intergranular air movement and grain drying in silos with fully, partially and slanted perforated floor

Intergranular air movement and its relation with moving drying fmnt in a grain bulk were investigated experimentally. An improved computer simulation model was developed to analyze the drying or cooling process in a bed of grain with non-parallel airflow from a partially or slanted perforated floor....

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Bibliographic Details
Published in:Drying technology 1996, Vol.14 (3/4), p.615-645
Main Authors: Gu, D. (University of Saskatchewan, Saskatoon, Saskatchewan, Canada.), Sokhansanj, S, Norum, D.I
Format: Article
Language:English
Subjects:
ACCURACY
AIR FLOW
Air movement
APLICACIONES DEL ORDENADOR
APPLICATION DES ORDINATEURS
COMPUTER APPLICATIONS
COMPUTER SIMULATION
CONTENIDO DE HUMEDAD
DRYING
ECHANGE THERMIQUE
Floor configuration
FLOORS
FLUJO DE AIRE
FLUX D'AIR
GRAIN
GRANOS
HEAT TRANSFER
Iso-traverse line
MASS TRANSFER
MODELE DE SIMULATION
MODELOS DE SIMULACION
MOISTURE CONTENT
PISOS
PLANCHER
SECADO
SECHAGE
SILO
SILOS
SIMULACION
SIMULATION
SIMULATION MODELS
SPATIAL DISTRIBUTION
TEMPERATURA
TEMPERATURE
TENEUR EN EAU
TRANSFERENCIA DE MASA
TRANSFERENCIA TERMICA
TRANSFERT DE MASSE
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Summary:Intergranular air movement and its relation with moving drying fmnt in a grain bulk were investigated experimentally. An improved computer simulation model was developed to analyze the drying or cooling process in a bed of grain with non-parallel airflow from a partially or slanted perforated floor. The model first simulates the airflow, then calc lates the heat and mass transfer between air and grain along the airflow streamlines. The results were compared with the simulated and experimental results from a fully perforated floor configuration. The degree of agreement between the computed and the experimental moisture contents depended upon the floor configuration. The model was not capable of predicting the temperatures to the accuracy of the predicted moisture contents, especially when airflow stream lines were not parallel to each other. For further improvement of the drying simulation model, an improved airflow model and computer program is required. Comparison of the simulated results with experimental data also
ISSN:0737-3937
1532-2300
DOI:10.1080/07373939608917118