## Journal of Central South University

 第46卷    第6期    总第250期    2015年6月

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(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
)

Structural optimization and numerical simulation of heat transfer and gas flow of ball-packed bed regenerative chamber

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/NZDXZAC 中南大学学报（英文版） ISSN 2095-2899 CN 43-1516/TBJCSTFT