CAJ | 학술논문

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1．5s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。
위해결통과현유기술모의방진간조장치간조물료과정곤난적문제，기우CFD－EDEM기고우합수학모형，채용표준 k－ε단류비은태적구랍－구랍우합산법대소구옥미렴식곤통간조상간조과정중기고전열、내류장동태분포진행분석연구。방진전대기고우합모형진행료이하전처리：차조삼유조형연건건립료간조상모형，응용Gambit연건대기진행료망격화분，이용절편조형기술건립료옥미방진모형，병대량충우합모형진행료초시조건、변계조건화우합삼수등설정。방진결과표명：재1．5s적방진과정중，옥미모형처우불동온도장수량부합정태분포，기중처우373 K적옥미모형수량위735개좌우，대약75개옥미모형온도상승료7．9 K；곤통내적렴판적전동대열기류유우동가속작용，사렴판부근적공기속도유0．50 m·s－1상승지0．63 m·s－1。
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 -εturbu-lence unsteady Euler-Euler coupling algorithm ,has analyzed the heat transfer by the gas and solid and dynamic distribu-tion 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 .