喷雾加湿在热风干燥中的应用及数值模拟  

Applications and numerical simulation of spray humidification in hot air drying

作　　者：李超新[1] 张学军[1,2] 朱自伟[3] 

机构地区：[1]新疆农业大学机械交通学院,乌鲁木齐市830052 [2]新疆农业工程装备创新设计重点实验室,乌鲁木齐市830052 [3]青岛大学机电工程学院,山东青岛266071

出　　处：《中国农机化学报》2015年第5期165-167,共3页Journal of Chinese Agricultural Mechanization

基　　金：新疆维吾尔自治区"十二五"科技重大专项(201130102-4)

摘　　要：某些物料热风干燥中,湿度是一个重要的影响因素。它直接影响被干燥物料的品质（收缩性、色泽性）。为保持箱体内湿度的平衡,采用喷雾加湿的方法进行间歇式加湿。本文运用CFD数值模拟的方法模拟加湿过程中雾滴的沉积分布和飘移性。模拟结果：当热风通过物料之后的速度为0.5~1m·s-1是效果最佳,既能达到干燥效果又能保证其干燥品质。When drying material in a hot air, humidity is an important factor, which directly affects the quality of the material to be dried （shrinkage, color）. In order to maintain the moisture balance of the cabinets, the method of intermittent humidification was adopted. The CFD numerical simulation method was used to simulate the droplet deposition distribution and drift potential in the humidification process. When the speed of the hot air after passing through the material is 0.5-1 m · s^-1 is the best, which could achieve the drying effect as well as guarantee the drying quality.

关 键 词：喷雾加湿 CFD 离散相模型 数值模拟 

分 类 号：S226.6[农业科学—农业机械化工程]