Journal of Northeastern University ›› 2013, Vol. 34 ›› Issue (6): 871-874.DOI: -

• Mechanical Engineering • Previous Articles     Next Articles

Simulation of Hot Air Drying on Corn Grains Based on the Three Dimension Entity Model

ZHANG Shiwei, KONG Ninghua, ZHANG Zhijun, XU Chenghai   

  1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China.
  • Received:2012-11-30 Revised:2012-11-30 Online:2013-06-15 Published:2013-12-31
  • Contact: ZHANG Shiwei
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Abstract: Based on the threedimensional entity model, the simulation of interior heat and mass transfer process in a single corn grain under the conditions of hot air drying was carried out. The corn grain was scanned by high precision medical CT machine. The CT images were processed with MIMICS and ANSYS to construct the corn kernel’s three dimension entity model. The Fourier heat conduction equation, the Fick diffusion equation, the heat transfer coefficient and mass diffusion coefficient formula were chosen as the governing equations of dry theoretical model. COMSOL Multiphysics was used to complete the simulation calculation. The results showed that the mass transfer is dominant in the corn kernel hot air drying. The simulation method based on the three dimension entity model can describe the interior heat and mass transfer phenomenon more accurately in the single grain.

Key words: hot air drying, corn grain, simulation, entity model, CT

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