| 摘要: |
| 为解决通过现有技术模拟仿真干燥装置干燥物料过程困难的问题,基于CFD-EDEM气固耦合数学模型，采用标准k-ε湍流非稳态的欧拉-欧拉耦合算法对小区玉米帘式滚筒干燥箱干燥过程中气固传热、内流场动态分布进行分析研究。仿真前对气固耦合模型进行了以下前处理：借助三维造型软件建立了干燥箱模型，应用Gambit软件对其进行了网格划分，利用切片造型技术建立了玉米仿真模型，并对两种耦合模型进行了初始条件、边界条件和耦合参数等设定。仿真结果表明：在1.5 s的仿真过程中，玉米模型处于不同温度场数量符合正态分布，其中处于373 K的玉米模型数量为735个左右，大约75个玉米模型温度上升了7.9 K；滚筒内的帘板的转动对热气流有扰动加速作用，使帘板附近的空气速度由0.50 m·s-1上升至0.63 m·s-1。 |
| 关键词: 帘式滚筒干燥箱 玉米 数值模拟 CFD-EDEM |
| DOI： |
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| 基金项目:“十二五”国家科技支撑项目农牧循环关键技术配套机具研发（2012BAD14B10-4） |
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| The numerical simulation for corn curtain roller drying box based on CFD-EDEM coupling |
| SHI Lin-rong, WU Jian-ming, ZHAO Wu-yun, SUN Wei, SUN Bu-gong, ZHANG Feng-wei |
| () |
| 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. |
| Key words: curtain roller drying box corn numerical simulation CFD-EDEM |
