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Un modèle bidimensionnel pour l'entreposage des céréales avec visualisation dynamique : prévisions de la température, le taux d'humidité, la germination et la respiration - une étude de cas pour le colza.

A two-dimensional model of grain storage with dynamic visualisation: predictions for temperature, moisture content, germination and respiration - a case study for rapeseed.

Auteurs : XANTHOPOULOS G., WOODS J. L.

Résumé

This work describes the development of a two-dimensional simulation model of a cylindrical silo. The model assumes axi-symmetric conditions throughout. The heat and mass-transfer equations are solved for the case of uniform vertical flow, using the 'up-wind' difference technique employed in computational fluid dynamics. This describes the ventilated case and the unventilated case, when the velocity is set to zero and the heat and mass transfer is assumed to be driven purely by diffusion. For the ventilated case, aerodynamic dispersion terms are incorporated. These describe the enhancement of heat and moisture diffusion by the mixing of air in its tortuous path through the grains. The program can simulate the storage of wheat, barley and rapeseed, using subroutines for each set of properties.

Détails

  • Titre original : A two-dimensional model of grain storage with dynamic visualisation: predictions for temperature, moisture content, germination and respiration - a case study for rapeseed.
  • Identifiant de la fiche : 2006-3009
  • Langues : Anglais
  • Source : Advances in stored product protection. Proceedings of the 8th International Working Conference on Stored Product Protection.
  • Date d'édition : 22/07/2002

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