[1]戚禹康,王远成*,俞晓静.浅圆仓横向和垂直通风数值模拟对比研究[J].山东建筑大学学报,2019,34(03):50-56.[doi:10.12077/sdjz.2019.03.008]
 QI Yukang,WANG Yuancheng*,YU Xiaojing.Comparative study on radial and vertical ventilation simulation of squat silo[J].Journal of Shandong jianzhu university,2019,34(03):50-56.[doi:10.12077/sdjz.2019.03.008]
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浅圆仓横向和垂直通风数值模拟对比研究()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
34
期数:
2019年03期
页码:
50-56
栏目:
研究论文
出版日期:
2019-06-15

文章信息/Info

Title:
Comparative study on radial and vertical ventilation simulation of squat silo
文章编号:
1673-7644(2019)03-0050-07
作者:
戚禹康王远成*俞晓静
(山东建筑大学 热能工程学院, 山东 济南 250101)
Author(s):
QI Yukang WANG Yuancheng* YU Xiaojing
(School of Thermal Energy Engineering, Shandong Jianzhu University, Jinan 250101, China)
关键词:
浅圆仓数值模拟横向通风垂直通风降温
Keywords:
squat silo numerical simulation lateral ventilation vertical ventilation cooling efficiency
分类号:
S379
DOI:
10.12077/sdjz.2019.03.008
文献标志码:
A
摘要:
目前,我国浅圆仓储粮主要采用垂直通风方式对粮食进行冷却降温,但是垂直通风产生的温度、水分分层现象明显,因此进行浅圆仓横向和垂直通风的数值模拟对比,可以研究横向通风的可行性,为浅圆仓机械通风系统提供更多选择。文章以浅圆仓为研究对象,采用计算流体动力学的方法,研究在横向通风方式下,粮堆内温度、速度分布的变化规律,并对同样条件下垂直通风进行了数值模拟,对比2种通风方式下粮堆内部的温度、速度分布变化,分析其通风均匀性、温度降低的速率以及通风阻力大小。结果表明:横向与垂直通风对浅圆仓粮堆区域的通风效果较接近,但横向通风无死角,均匀性好;与垂直通风相比,横向通风时粮仓空气区域的温度梯度更小,降温更快,通风效果更好;当装粮高度较大时,横向通风的通风阻力会明显优于垂直通风。
Abstract:
At present, Chinas squat silo storage grain mainly uses vertical ventilation to cool the grain, but the temperature and moisture stratification caused by vertical ventilation is obvious. Therefore, the numerical simulation of the lateral ventilation and vertical ventilation of the squat silo warehouse can be used to study the feasibility of lateral ventilation and provide more options for squat silo mechanical ventilation system. Taking the squat silo as the research object, the paper uses the computational fluid dynamics method to study the variation of temperature and velocity distribution in the grain pile under the lateral ventilation mode. The numerical simulation of vertical ventilation under the same conditions was carried out to compare the temperature and velocity distribution inside the grain pile under the two ventilation modes. The ventilation uniformity, the rate of temperature reduction and the ventilation resistance of the two methods were analyzed. The results show that the lateral and vertical ventilation is relatively close to the ventilation effect of the squat silo grain pile area, but the lateral ventilation has no dead angle and has good uniformity; compared with vertical ventilation, the temperature gradient of the granary air area is smaller when the lateral ventilation is performed, the temperature is lowered faster, and the ventilation effect is better; when the height of the grain is large, the ventilation resistance of the lateral ventilation is significantly better than that of the vertical ventilation.

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备注/Memo

备注/Memo:
收稿日期:2019-03-10基金项目:国家重点研发计划资助项目(2016YFD0400100,2016YDF0401002);国家公益专项(201513001)作者简介:戚禹康(1995-),男,在读硕士,主要从事多孔介质传热、传湿等方面的研究.Email:1534628991@qq.com通讯作者*:王远成(1963-),男,教授,博士,主要从事多孔介质传热、传湿等方面的研究.Email:wycjn1@163.com
更新日期/Last Update: 2019-05-05