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中南大学学报(自然科学版)

Journal of Central South University

第46卷    第6期    总第250期    2015年6月

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文章编号:1672-7207(2015)06-1981-08
填充球蓄热室内传热与流动过程数值模拟及结构优化
刘颖1,刘义平2,陶曙明3,温治1, 4,刘训良1, 4

(1. 北京科技大学 机械工程学院,北京,100083;
2. 宝钢工业炉工程技术有限公司,上海,201900;
3. 宝钢钢管条钢事业部设备能环部,上海,201900;
4. 北京科技大学 冶金工业节能减排北京市重点实验室,北京,100083
)

摘 要: 为了解决填充球蓄热室在使用过程中局部温度过高的问题,以某钢厂蓄热烧嘴为研究对象,在多孔介质假设的基础上,基于局部非热力学平衡的气、固能量方程和修正后的动量方程建立蓄热室内传热与流动过程三维非稳态数学模型。利用流体力学计算软件Fluent并结合其二次开发平台对模型进行求解,通过测试数据验证模型的正确性。模型计算结果表明:在稳态工作过程中蓄热室水平截面上存在一定的速度差和温差,将蓄热室烟气入口对面侧墙的倾斜度改为60°,并且增加长度为300 mm的缓冲段,同时将空气入口形状改为漏斗型有利于提高蓄热室内水平截面上温度分布的均匀性。

 

关键字: 蓄热室;传热;气体流动;数值模拟;结构优化

Structural optimization and numerical simulation of heat transfer and gas flow of ball-packed bed regenerative chamber
LIU Ying1, LIU Yiping2, TAO Shuming3, WEN Zhi1, 4, LIU Xunliang1, 4

1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. BaoSteel Industrial Furnace Engineering & Technology Co., Ltd, Shanghai 201900, China;
3. Equipment, Energy & Environmental Protection Department of Bar Steel Division of Baosteel, Shanghai 201900, China;
4. Beijing Key Laboratory of Energy Saving and Emission Reduction for Metallurgical Industry,
University of Science and Technology Beijing, Beijing 100083, China

Abstract:In order to solve the problem of uneven temperature distribution on a horizontal plane within an operating regenerative chamber, a three-dimensional unsteady mathematical model was developed for describing heat transfer and gas flow process in a regenerative chamber based on the assumption of porous medium. The model considered portion non-equlibrium thermodynamics energy equations and a revised momentum equation was established by combining of a commercial computational fluid dynamics software, FLUENT, and its secondary development platform. The results calculated by mathematical model are in good agreement with test data, which indicates that this model established is correct. The results show that velocity and temperature gradients exist on the horizontal plane within the regenerative chamber. By turning the inclination of the wall opposite the inlet of gas into 60°, adding a buffer section of 300 mm in length and changing the type of air inlet into funnel type, the temperature field on the horizontal plane of the regenerative chamber can be more uniform.

 

Key words: regenerative chamber; heat transfer; gas flow; numerical simulation; structural optimization

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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