双向侧风木材干燥窑内流场的数值模拟与优化  

Numerical Simulation and Optimization of Flow Field in Bilateral Side-Fan Wood Drying Kiln

作　　者：卢富明 范雪琪 丁雨晴 郑晓红[1] 钱华[1] LU Fu-ming;FAN Xue-qi;DING Yu-qing;ZHENG Xiao-hong;QIAN Hua(School of Energy and Environment,Southeast University,Nanjing 210096,Jiangsu,P.R.China;Shanghai Marine Diesel Engine Research Institute,Shanghai 201108,P.R.China)

机构地区：[1]东南大学能源与环境学院,江苏南京210096 [2]上海船用柴油机研究所,上海201108

出　　处：《林产工业》2023年第1期33-39,共7页China Forest Products Industry

基　　金：国家自然科学基金资助项目(41977370);江苏省2021年度绿色建筑发展专项资金奖补项目。

摘　　要：为适配海运木材干燥特点,提出双向侧面通风的干燥方法。应用Fluent软件对不同送风速度下的干燥窑内流场进行模拟,并在此基础上改变干燥窑结构,研究木材堆与墙壁间的气道宽度对干燥窑内流场的影响。结果表明:双向侧风干燥窑流场均匀性良好,但干燥窑中间层和循环末端的木材堆风速偏低。通过对比8 m/s和12 m/s送风速度下干燥窑内部流场,得出当送风速度为12 m/s时,干燥窑内风速满足1~3 m/s这个理想区间,加大送风风速可改善流场均匀性。此外,加宽气道可使中间层风速变大,并提高整体风速,但这种变化趋势存在拐点。研究得到的相关结果可为海运木材干燥窑的搭建提供设计参考。In order to adapt to the characteristics of marine wood drying,this paper proposed a drying method with bilateral ventilation.Fluent software was used to simulate the flow field in the drying kiln under different air supply velocity.Besides,the structure of the drying kiln was changed to study the influence of the airway width between the wood stack and the wall on the flow field in the drying kiln.The results showed that the flow field uniformity of the bilateral side-fan drying kiln was good,but the wind velocity of the wood stack in the middle layer of the drying kiln and the end of the air circulation was relatively lower.By comparing the internal flow field at the air supply velocity of 8 m/s and 12 m/s,it was concluded that when the air supply velocity was 12 m/s,the air velocity in the drying kiln could meet the ideal range of 1~3 m/s,and the increase of air supply velocity also improved the uniformity of the flow field.In addition,widening the air channel can increase the wind velocity in the middle layer and improve the overall wind velocity,but this effect had an inflection point.This study can provide a design reference for the construction of the Seaborne drying kilns.

关 键 词：木材干燥窑 数值模拟 流场均匀性 海运干燥 结构优化 

分 类 号：TS652[轻工技术与工程]