基于Fluent的气流式集粮箱数值流场的仿真  

Grain Collecting Bin Based on Fluent

作　　者：陈思旭 王霜[1,2] 廖敏[1,2] 李青涛 卢劲竹 

机构地区：[1]西华大学机械工程学院,成都610039 [2]西华大学流体与动力机械教育部重点实验室,成都610039

出　　处：《农机化研究》2018年第1期34-39,共6页Journal of Agricultural Mechanization Research

基　　金：国家重点研发计划项目(2016YFD0700400);四川省应用基础研究计划项目(2014JY0055);流体及动力机械教育部重点实验室(西华大学)研究课题(szjj2016-011;JYBFX-YQ-1)

摘　　要：为了改善小区收割机上麦粒在集粮箱中流化堆积的状况,提高粮食输送能力,深入研究了集粮箱中气流场的分布规律。利用Adams动力学软件建立工作时的振动模型,得到振动响应,在Fluent 15.0软件中对集粮箱进行数值模拟仿真,并通过对其喉管高度、落粒出风管高度、落粒口管锥角及进风口壁面内半径4个参数的变化做正交试验,分析对比得出结果。试验表明:有效结构参数为喉管高度为25mm,落粒出风管高度为60mm,落粒口管锥角为30°,进风管壁面内半径为1 800mm,有利于集粮箱对粮食颗粒的有效风送运输。In order to improve the condition of wheat grain fluidized particle deposition in grain collecting bin on plot har- vester and enhance the grain transmission capacity, the distribution regularity of the air flow field in the grain collecting bin was studied in depth. The vibration response was obtained according to the operating vibration model based on the dy- namics software ADAMS. The numerical simulation on the grain collecting bin was conducted in software Fluent 15.0, and orthogonal experiments were carried out by changing four parameters ： the height of the throat, the height of particle air outlet pipe, the cone angle of the dropping mouth, and the inner radius of the air inlet pipe. The results were ob- tained by means of analysis and comparison. Experiments showed that the effective structural parameters were as follows ： the height of the throat was 25mm, the height of particle air outlet pipe was 60mm, the cone angle of the dropping mouth was 30°, and the inner radius of the inlet pipe was 1800mm, the parameters of which were favorable to the wind trans- portation in grain collecting bin.

关 键 词：集粮箱 振动 CFD 气流场 收割机 

分 类 号：S225[农业科学—农业机械化工程] S220.39[农业科学—农业工程]