中国烟草科学2025，Vol.46Issue(6)：78-87,10.DOI:10.13496/j.issn.1007-5119.2025.06.010
箱式烘烤烟叶回潮过程数值模拟与均匀性分析
Numerical Simulation and Uniformity Analysis of Rewetting Process of Flue-cured Tobacco in Box-type Curing
摘要
Abstract
To analyze the uniformity of flue-cured tobacco rewetting in a box-type barn,this study constructed a theoretical model of moisture transfer during the rewetting process.Through comparative analysis,the accuracy of rewetting simulations under instantaneous equilibrium rewetting model(IE)and dynamic equilibrium rewetting model(DE)boundary conditions was evaluated,with both simulations calibrated against environmental data from the box-type rewetting system.Results demonstrated that compared with the IE,the DE introduced the moisture absorption equilibrium characteristic parameters of the leaf with τ=1 580 and the main vein with τ=9 372,reducing the maximum simulation errors of the leaf and the main vein from 14.1%and 36.1%to 7.4%and 7.1%respectively,which significantly improved the prediction accuracy.At the scale of single leaf,the rewetting rate of leaf was much higher than that of the main vein.At the scale of a single box,the uniformity of the rewetting process of flue-cured tobacco first decreased and then increased.The moisture gradually penetrated from the outer layer to the inner layer,and the moisture content of the tobacco leaves at the lower part of the box is higher than that at the upper part.At the scale of barn,as the distance from the humidifier increased,the moisture level gradually decreases,with the central area of all ten boxes showing the lowest moisture levels.In addition,rewetting uniformity was optimal in boxes 1-3.In conclusion,the rewetting model with two-component(leaf and vein)dynamic equilibrium boundary conditions constructed based on the humidity field and material properties was used to analyze the rewetting uniformity of flue-cured tobacco,which provided a scientific foundation for optimizing future flue-cured tobacco rewetting processes in box-type barns.关键词
箱式烘烤/回潮过程/数值模拟/边界条件/均匀性Key words
box-type curing/rewetting process/numerical simulation/boundary condition/uniformity分类
农业科技引用本文复制引用
ZHOU Chaoyi,WANG Tingxian,LI Jingchao,ZHANG Yuhai,YANG Zhanwei,LIN Yong,ZENG Qiang,WEI Shuo..箱式烘烤烟叶回潮过程数值模拟与均匀性分析[J].中国烟草科学,2025,46(6):78-87,10.基金项目
中国烟草总公司科技项目{国烟科[2021]55号} （）
河南省烟草公司资助项目(2023410000240027) （2023410000240027）
河南省高等学校重点科研项目计划(23A210021) （23A210021）
