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浙江大学学报(工学版)
浙江大学学报(工学版)  2021, Vol. 55 Issue (2): 410-418    DOI: 10.3785/j.issn.1008-973X.2021.02.022
材料工程     
全氧燃烧高铝玻璃熔窑三维数值工程仿真
杨楚航(),贾绍辉,马晔城,朱经纬,刘涌*(),韩高荣
浙江大学 材料科学与工程学院 硅材料国家重点实验室，浙江 杭州 310027
Three-dimensional numerical engineering simulation of oxy-fuel high alumina glass furnace
Chu-hang YANG(),Shao-hui JIA,Ye-cheng MA,Jing-wei ZHU,Yong LIU*(),Gao-rong HAN
State Key Laboratory of Silicon Materials, College of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
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摘要：

基于Ansys Fluent 19.2软件采用玻璃液面与火焰空间底部双向热耦合方式进行三维联合建模，对日拉引量为100 t/d的全氧燃烧浮法高铝玻璃熔窑的玻璃池窑与火焰空间进行数值工程仿真，考察入口预设配合料堆长度对耦合区温度连续性的影响，提出基于3D流场的澄清因子计算公式. 结果表明：在8次热耦合迭代后，温度和热流残差趋于稳定，玻璃液与火焰空间进行热交换部分的热流分布与火焰空间底面温度分布相对应，火焰空间温度场在玻璃液产生了不对称的横向对流；预设6.6 m料堆长度的温度曲线具有最好的连续性，该试探性计算提供了判断玻璃配合料山长度的新方法；计算得到热耦合与非热耦合的澄清因子分别为4.6425、4.8279，表明常规非热耦合计算高估了池窑的澄清能力.
关键词： 热耦合;  配合料堆长度;  横向对流;  澄清因子;  Fluent    
Abstract:

Ansys Fluent 19.2 was used to study the melting tank and the combustion space of oxy-fuel high alumina float glass furnace with daily output of 100 t/d. The bidirectional thermal coupling between the top of the glass flow and the bottom of the combustion space for 3D modeling were employed. The influence of inlet batch length on temperature continuity in the coupling zone was investigated, and a formula for calculating refining index based on 3D flow field was proposed. Results show that after eight iterations of thermal coupling, residuals of temperature and heat flux tended to be stable, heat flux distribution of the heat exchanging zone between glass flow and combustion space corresponded to the temperature distribution at the bottom of combustion space. The temperature field of combustion space produced asymmetric transverse convection in glass flow. The temperature curve of the preset 6.6 m batch length showed the best continuity, and this kind of exploratory calculation provides a new method for judging the length of glass batch. The refining index of thermal coupling and non-thermal coupling were 4.6425 and 4.8279, indicating that conventional non-thermal coupling calculation has overestimated the refining ability of melting tank.
Key words: thermal coupling    batch length    transverse convection    refining index    Fluent
收稿日期: 2020-03-19 出版日期: 2021-03-09
CLC:  TQ 171  
基金资助: “十三五”国家重点研发计划资助项目（2016YFB0303700）；国家自然科学基金资助项目（U1809217，51672242）；浮法玻璃新技术国家重点实验室开放课题基金资助项目
通讯作者: 刘涌     E-mail: 21926069@zju.edu.cn;liuyong.mse@zju.edu.cn
作者简介: 杨楚航（1997—），男，硕士生，从事玻璃熔窑数值模拟研究. orcid.org/0000-0003-0505-393X. E-mail： 21926069@zju.edu.cn
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杨楚航
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刘涌
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引用本文:

杨楚航,贾绍辉,马晔城,朱经纬,刘涌,韩高荣. 全氧燃烧高铝玻璃熔窑三维数值工程仿真[J]. 浙江大学学报(工学版), 2021, 55(2): 410-418.

Chu-hang YANG,Shao-hui JIA,Ye-cheng MA,Jing-wei ZHU,Yong LIU,Gao-rong HAN. Three-dimensional numerical engineering simulation of oxy-fuel high alumina glass furnace. Journal of ZheJiang University (Engineering Science), 2021, 55(2): 410-418.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2021.02.022    或    http://www.zjujournals.com/eng/CN/Y2021/V55/I2/410

熔窑位置 L /m W /m H /m
熔化部 23.0 7.0 1.1
卡脖 4.2 2.8 1.1
冷却部 8.8 6.5 1.1
表 1  玻璃池窑主要尺寸参数
喷枪位置 S /m
1# 2# 3# 4# 5# 6#
窑炉左侧喷枪 2.9 4.6 6.4 10.4 12.1 13.8
窑炉右侧喷枪 2.1 3.8 5.5 9.6 11.3 13.0
表 2  喷枪几何位置
图 1  火焰空间和池窑结构模型图
图 2  高铝玻璃黏度与温度关系图
燃气类型 $\varphi _{\rm{B}} $/% 燃气类型 $\varphi _{\rm{B}} $/%
CH4 95.201 C5H12 0.089
C2H6 2.286 H2 1.201
C3H8 0.407 CO2 0.663
C4H10 0.153 ? ?
表 3  火焰空间中的燃气组成
喷枪编号 qf /（N·m3·h?1） qo /（N·m3·h?1）
1# 140 287
2# 160 328
3# 170 348
4# 170 348
5# 145 298
6# 90 185
表 4  喷枪进口燃气与氧气组成
图 3  火焰空间与玻璃池窑热耦合界面示意图
图 4  热耦合迭代残差以及温度场分布
图 5  火焰空间底面温度分布
图 6  玻璃池窑顶面玻璃液热流分布
图 7  不同配合料堆长度模拟所得平均窑压沿窑长方向的分布曲线
图 8  不同配合料堆长度模拟所得大碹顶温度沿窑长方向的分布曲线
图 9  不同配合料堆长度模拟所得火焰空间底面温度沿窑长方向的分布曲线
图 10  火焰空间喷枪平面内流场速度矢量分布
图 11  池窑玻璃液流场速度矢量分布
图 12  池窑玻璃液流线图
图 13  池窑YZ平面不同位置截面处玻璃液流线图
模拟方式 l /m h /m u /（m·s?1） κ /（m·s?1） RI
热耦合 4.1170 0.2539 1.6539×10?4 0.4735×10?4 4.6425
非热耦合 4.1170 0.2428 3.3727×10?4 0.9603×10?4 4.8279
表 5  玻璃液澄清因子
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