地下仓粮堆局部发热温度场数值模拟研究  

Study on Numerical Simulation of Local Heating Temperature Field of Grain Piles in Underground Grain Silos

作　　者：陈曦[1] 秦苗苗 陈岩 高亚辉[1] 杨柳[1] 刘杨 Chen Xi;Qin Miaomiao;Chen Yan;Gao Yahui;Yang Liu;Liu Yang(School of Civil Engineering,Henan University of Technology,Zhengzhou 450001)

机构地区：[1]河南工业大学土木工程学院,郑州450001

出　　处：《中国粮油学报》2024年第7期12-18,共7页Journal of the Chinese Cereals and Oils Association

基　　金：国家自然科学基金项目(51708180);河南省高等学校重点科研项目(23A560010);河南工业大学青年骨干教师培育计划项目(21420099);河南省科技研发计划联合基金项目(应用攻关类)(222103810076);河南省重点研发与推广专项(科技攻关)(232102111126)。

摘　　要：为了解地下仓粮堆局部发热对粮堆温度场变化的影响,以高水分玉米为研究对象,采用数值模拟的方法,通过在地下仓粮堆内加入内置热源模拟粮堆局部发热,研究了地下仓粮堆在内置热源数量与表面温度不同情况下的粮堆内部温度场变化。结果表明:当地下仓粮堆中心测点发热时,热源周围相同半径内上方温度明显高于下方,在粮堆上部容易产生次热源;当地下仓粮堆右侧临近仓壁和装粮线处以及装粮线中心处同时发热时,粮堆左下部容易产生次热源;当地下仓粮堆右侧临近仓壁和装粮线处、左侧紧贴仓壁和装粮线处以及装粮线中心处同时发热时,粮堆下部容易产生次热源,并且热源温度为45℃时的粮堆内部温度明显高于热源温度为35℃时的粮堆内部温度。In order to investigate the influence of local heating temperature field of grain piles in underground grain silos,the numerical simulation method was used to simulate the local heating of grain piles by adding internal heat source to underground grain piles,and the change of internal temperature of grain piles under different internal heat source numbers and surface temperature were studied.The results indicated that when the central sampling point of the grain piles heated up,the temperature above the heat source was obviously higher than that below the heat source in the same radius,and the secondary heat source was easily generated in the upper part of the grain pile;when the local heating were located in the right side of grain pile near the silo wall and the grain loading line,and the center of the loading line,secondary heat source was easily generated in the lower left part of grain pile;when the local heating were located in the right side of grain pile near the silo wall and the grain loading line,left side of grain pile cling to silo wall and grain loading line,and the center of the loading line,secondary heat source was easily generated in the lower part of grain pile.When the heat source temperature was 45℃,the internal temperature of the grain piles was obviously higher than that when the heat source temperature was 35℃.

关 键 词：地下仓 粮堆 局部发热 内置热源 温度场 

分 类 号：TU249.2[建筑科学—建筑设计及理论]