填充球蓄热室内传热与流动过程数值模拟及结构优化  

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

作　　者：刘颖[1] 刘义平 陶曙明 温治[1,4] 刘训良[1,4] 

机构地区：[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

出　　处：《中南大学学报（自然科学版）》2015年第6期1981-1988,共8页Journal of Central South University:Science and Technology

基　　金：中央高校基本科研业务费专项资金项目(FRF-SD-12-007B)~~

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。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.

关 键 词：蓄热室 传热 气体流动 数值模拟 结构优化 

分 类 号：TF066[冶金工程—冶金物理化学]