| The numerical simulation for corn curtain roller drying box based on CFD-EDEM coupling |
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| DOI：10.7606/j.issn.1000-7601.2014.06.045 |
| Key Words: curtain roller drying box corn numerical simulation CFD-EDEM |
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| Abstract: |
| In order to solve the problem of simulating difficulty for the process of drying material by drier through existing technology, based on the CFD-DEM gas-solid coupling mathematical model, using the standard k-ε turbulence unsteady Euler-Euler coupling algorithm, has analyzed the heat transfer by the gas and solid and dynamic distribution of the internal flow field in the drying process of the curtain roller drying box. Before simulation has carried out the pre-treatment for the gas-solid coupling model: Has set up the dryin box model by the 3D modeling software and carried out the grid division by using the Gambit software. Using the slice modeling technology has set up the corn simulation model and the initial condition, boundary condition and coupling parameters for the two kinds of coupled models. The simulated results shown that: In the 1.5 s simulating process, the corn model be in different temperature field accorded with normal distribution. Among them, the number of corn model was 735 be in 373 K, the temperature has increased 7.9 K about 75 corn models; the rmove of the curtain in the roller will have the disturbance accelerate function for heat air flow, the air speed near the curtain plate was increased from 0.50 m·s-1 up to 0.63 m·s-1. |
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