摘要
干燥定型是水稻'秸秆'营养穴盘生产工艺中非常重要的一个环节,干燥质量的好坏将影响水稻'秸秆'营养穴盘的强度和翘曲等品质指标,进而影响播种、育秧、插秧和运输的要求。在微波热风耦合干燥机中,气流分配室是决定干燥机干燥质量的关键部件之一,其结构是否合理将严重影响水稻秧盘的干燥质量。为此,利用计算流体力学FLUENT软件对气流分配室结构对内部流场均匀性的影响进行仿真分析。结果表明:通过改变气流分配室腔体结构腔前板高度、上顶角角度及边壁倾斜角角度对气流分配室出风口均匀性皆产生了积极的影响。其取值范围为腔前板高度为28~36mm,上顶角角度为105°~115°,边壁倾斜角角度为85°~75°。该研究可为气流分配室出风口均匀性的进一步优化提供参考。
Dry setting is a very important part of the production process of rice'straw'nutrition plug.The quality of dryness will affect the quality index and strength of rice'straw'nutrition plugs,which will affect seeding and breeding.Requirements for transplanting and transporting.In the microwave hot air coupling dryer,the air distribution chamber is one of the key components to determine the drying quality of the dryer.Whether the structure is reasonable will seriously affect the drying quality of the rice tray.In this paper,the computational fluid dynamics FLUENT software is used to simulate the influence of the air distribution chamber structure on the internal flow field uniformity.The results show that the height of the front panel of the air distribution chamber cavity,the angle of the upper apex angle and the angle of the angle of the side wall have a positive effect on the uniformity of the air outlet of the air distribution chamber.The value range is:the height of the front plate of the cavity is 28 mm-36 mm,the angle of the upper apex angle is 105°-115°,and the angle of the inclined angle of the side wall is 85°-75°.This study can provide a reference for further optimization of the uniformity of the air outlet of the air distribution chamber.
作者
于海明
李海源
汪春
李海亮
张欣悦
梁琦
余兵兵
Yu Haiming;Li Haiyuan;Wang Chun;Li Hailiang;Zhang Xinyue;Liang Qi;Yu Bingbing(School of Engineering,Heilongjiang Bayi Agricultural University,Daqing 163319,China;School of Mechanical and Automobile Engineering,Zhaoqing University,Zhaoqing 526061,China;South Asian Tropical Crops Research Institute,Chinese Academy of Tropical Agricultural Sciences,Zhanjiang 524000,China)
出处
《农机化研究》
北大核心
2020年第2期15-21,共7页
Journal of Agricultural Mechanization Research
基金
黑龙江省自然科学基金项目(C2015037)
国家重点研发计划项目(2016YFD800602)
国家科技支撑计划项目(2014B AD06B01)
黑龙江农垦总局科技攻关项目(HNK135-03-02-03)
中国博士后科学基金项目(2016M601404)
“杂粮生产与加工”黑龙江省特色学科建设项目(2017-2018)
关键词
水稻“秸秆”营养穴盘
气流分配室
微波热风耦合干燥机
计算流体力学
数值模拟
rice'straw'nutrition plug
air distribution chamber
microwave hot air coupling dryer
computational fluid dynamics
numerical simulation
