食品与发酵工业 >

2026 , Vol. 52 >Issue 10: 230 - 237

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.043358

研究报告

玉米粮堆热风干燥收缩过程模拟研究

  • 赵平奇 ,
  • 王晓弯 ,
  • 朱晓玥 ,
  • 陈鹏枭 ,
  • 朱广飞 ,
  • 吕嘉乐 ,
  • 邢宴嘉 ,
  • 温运收
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  • 1(河南工业大学 粮食和物资储备学院,河南 郑州,450001)
    2(农业农村部规划设计院,北京,100125)
    3(河南中科智能装备有限公司,河南 安阳,456400)
第一作者:硕士研究生(陈鹏枭副教授为通信作者,E-mail:cpx2020@haut.edu.cn)

收稿日期: 2025-05-21

  修回日期: 2025-10-21

  网络出版日期: 2026-06-15

基金资助

农业农村部规划设计研究院农规创新科研项目(QD202414);河南省科技攻关项目(252102111169)

收起

Simulation study of heat drying shrinkage process of corn grain piles

  • ZHAO Pingqi ,
  • WANG Xiaowan ,
  • ZHU Xiaoyue ,
  • CHEN Pengxiao ,
  • ZHU Guangfei ,
  • LYU Jiale ,
  • XING Yanjia ,
  • WEN Yunshou
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  • 1(School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, China)
    2(Academy of Agricultural Planning and Engineering, Beijing 100125, China)
    3(Henan Zhongke Intelligent Equipment Co. Ltd.,Anyang 456400, China)

Received date: 2025-05-21

  Revised date: 2025-10-21

  Online published: 2026-06-15

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摘要

该文利用Simcenter STAR-CCM+软件,采用流-固耦合方法,建立了玉米粮堆热风干燥的湿热传递收缩模型。通过数值模拟,探究玉米粮堆的传热传质特性及干燥过程中产生的体积收缩,并利用低场核磁共振(low field nuclear magnetic resonance,LF-NMR)和核磁共振成像(magnetic resonance imaging,MRI),对热风干燥过程中玉米水分的变化和迁移进行验证。结果表明,该模型能较好地反映粮堆干燥过程中湿热传递及体积收缩变化规律。干燥过程中粮堆温度从底部开始升温,水分从底部开始损失,且玉米在干燥过程中的收缩分为2个阶段:前期快速收缩,后期收缩速度变缓,干燥终点玉米体积比约为88%。在干燥过程中,玉米中的自由水逐渐转化为结合水,且不易流动水损失比例最大。

关键词： 热风干燥; 模拟; 玉米; 收缩; 湿热传递

本文引用格式

赵平奇 , 王晓弯 , 朱晓玥 , 陈鹏枭 , 朱广飞 , 吕嘉乐 , 邢宴嘉 , 温运收 . 玉米粮堆热风干燥收缩过程模拟研究[J]. 食品与发酵工业, 2026 , 52(10) : 230 -237 . DOI: 10.13995/j.cnki.11-1802/ts.043358

Abstract

The hygrothermal heat transfer contraction model of hot-air drying of corn grain heap was established by using Simcenter STAR-CCM+ software with the flow-solid coupling method.Through numerical simulation, the heat and mass transfer characteristics of the corn grain heap and the volume contraction generated during the drying process were investigated, and the changes and migration of corn moisture during the hot air drying process were verified by using low field nuclear magnetic resonance (LF-NMR) and magnetic resonance imaging (MRI).Results showed that the model could better reflect the changing rules of moisture heat transfer and volume shrinkage in the drying process of the grain pile.The temperature of the grain heap in the drying process started to rise from the bottom, and the moisture loss started from the bottom. The contraction of corn in the drying process was divided into two stages, including rapid contraction in the early stage and slower contraction in the late stage, and the volume ratio of corn at the end of drying was about 88%.In the drying process, the free water in the corn was gradually converted into bound water, and it was not easy to flow the largest proportion of water loss.

Key words： hot air drying; simulation; corn; shrinkage; moisture heat transfer

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