基于COMSOL的射频与热风联合干燥条件下枣片质热传递耦合模型的建立与验证  

Establishment and verification of mass and heat transfer coupledmodel of jujube slices dried by hot air combined with radio frequency heat treatment based on COMSOL

作　　者：王强[1] 曹帅涛 杨陈妍 臧永镇 姚雪东[1,2] 董万城 黄勇 WANG Qiang;CAO Shuaitao;YANG Chenyan;ZANG Yongzhen;YAO Xuedong;DONG Wancheng;HUANG Yong(College of Mechanical and Electrical Engineering,Shihezi University,Shihezi,Xinjiang 832003,China;Northwest Key Laboratory of Agricultural Equipment,Ministry of Agriculture and Rural Development,Shihezi,Xinjiang 832003,China)

机构地区：[1]石河子大学机械电气工程学院,新疆石河子832003 [2]农业农村部西北农业装备重点实验室,新疆石河子832003

出　　处：《石河子大学学报(自然科学版)》2025年第1期37-44,共8页Journal of Shihezi University(Natural Science)

基　　金：国家自然科学基金项目(31960488)。

摘　　要：为了揭示射频热处理对热风干燥效果的影响机理和枣片在干燥过程中水分与热量的动态变化。先通过对单一热风干燥(HA)及施加射频热处理的热风干燥(HA+RF)质热传递过程的理论分析,推导和建立了质热传递数学模型,确立了质热传递模型求解所需参数的数学表征;然后利用COMSOL多物理场仿真软件对HA和HA+RF条件下枣片的质热传递过程进行有限元模拟仿真与分析,并进行了试验验证。结果表明:中心温度模拟值与试验值最大相差6.90℃,最小为0.01℃;表面温度模拟值与试验值最大相差1.77℃,最小相差0.30℃;HA和HA+RF枣片含水率模拟值与试验值相关系数R~2分别为0.986、0.991,模拟结果与试验结果有较好的一致性,可为枣片干燥均匀性的研究及射频施加机制优选提供模型基础。To investigate the mechanism of RF treatment on the drying effect of hot air and to elucidate the dynamic changes in moisture and heat within jujube slices during the drying process.Based on the theoretical analysis of the mass heat transfer process of single hot air drying(HA)and hot air drying(HA+RF)with RF heat treatment,the mathematical model of mass heat transfer was developed,and the mathematical characterization of the parameters required for solving the mass heat transfer model was established.Then COMSOL multi-physical field simulation software was used to simulate and analyze the mass and heat transfer process of jujube sheet under HA and HA+RF conditions.And relevant experiments were conducted.The results indicated that the maximum and minimum differences between the simulated and experimental central temperature values were 6.90℃and 0.01℃,respectively.The maximum and minimum differences between the simulated and experimental surface temperature values were 1.77℃and 0.30℃,respectively.The correlation coefficients R2 between the simulated and experimental values of water content of HA and HA+RF jujube slices were 0.986 and 0.991,respectively.The simulated results are in good agreement with the experimental results,which provide a model basis for the study of drying uniformity of jujube slices and the optimization of RF application mechanism.

关 键 词：枣片 质热传递 耦合模型 射频热处理 COMSOL 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]