工程科学学报，第38卷，第5期：637643,2016年5月 Chinese Journal of Engineering,Vol.38,No.5:637-643,May 2016 D0l:10.13374/j.issn2095-9389.2016.05.007:http://journals.ustb.edu.cn 基于PV技术的钢包临界卷渣行为水模型研究 吴华杰1)四，张漓”，徐阳”，岳峰》，冯美兰”，魏崇一”，郭浩” 1)北京科技大学治金工程研究院，北京1000832)北京科技大学钢铁共性技术协同创新中心，北京100083 ☒通信作者，Email:whjyeah@163.com 摘要基于粒子图像测速(particle image velocimetry,PV)技术，通过水模型研究临界卷渣条件下卷渣过程和钢包流场特 征，解析临界卷渣从发生到结束的整个过程卷渣处流场速度的变化情况，并定量分析炉渣运动黏度对临界卷渣速度的影响. 将临界卷渣速度的实验检测值与传统理论计算值进行比较和讨论.研究结果表明：临界卷渣过程从开始到结束可细分为八个 不同阶段，卷渣处流场速度变化在这八个阶段中先增大后减小再增大：炉渣运动黏度对卷渣具有重要影响，炉渣运动黏度越 大，临界气量和临界卷渣速度越大，并且临界卷渣速度与炉渣运动黏度的关系更具线性相关性.实验拟合得到炉渣运动黏度 与临界卷渣速度的关系式.最后根据传统理论计算模型和实测结果提出实验条件下修正的临界卷渣速度表达式， 关键词炼钢：流场：卷渣：速度：运动黏度：粒子图像测速 分类号TF769.9 Water model study on critical slag entrapment behavior based on PIV technology WU Huajie,ZHANG Li,XU Yang",YUE Feng,FEN Mei-an,WEI Chong-yi,GUO Hao 1)Engineering Research Institute,University of Science and Technology Beijing,Beijing,100083 2)Collaborative Innovation Center of Steel Technology,University of Science and Technology Beijing,Beijing 100083 Corresponding author,E-mail:whjyeah@163.com ABSTRACT The slag entrapment process and the flow field of a specific ladle at critical flow rate are investigated based on particle image velocimetry (PIV)technology,and the change of fluid velocity at the region where slag is entrapped into steel during the whole slag entrapment process is studied by water modelling.The influence of the kinematic viscosity of slag on the critical slag entrapment velocity is analyzed quantitatively.The critical slag entrapment velocity collected from experiments is compared with the calculated one by the traditional theory.It is shown that the critical slag entrapment process can be divided into 8 stages from the occurrence to the end,and the fluid velocity at the point where slag is entrapped into steel increases first,then decreases and increases again during the 8 stages.The kinematic viscosity of slag has great influence on slag entrapment.When the kinematic viscosity of slag increases,the critical flow rate and critical slag entrapment velocity enlarge,and the linear correlation relationship between the critical slag entrap- ment velocity and the kinematic viscosity of slag becomes more obvious.A relational expression between the critical slag entrapment velocity and the kinematic viscosity of slag is derived from experimental data by liner fitting.At the end of this article,a correctional expression of the critical slag entrapment velocity is put forward based on the experimental data and the theoretically calculated values. KEY WORDS steelmaking:flow fields;slag entrapment:velocity:kinematic viscosity:particle image velocimetry 钢铁治金生产过程中钢包内钢液流动和卷渣行为 液的成分和温度.当搅拌强度较弱时，渣面处于一定程 是一种普遍存在且对治金效果有重要影响的现象.吹 度的凝固状态，传质较慢；当搅拌比较强烈的情况下， 氩搅拌能扩大反应界面，加速反应物质的传递，均匀钢 钢一渣界面强烈波动，甚至使渣滴卷入钢水.因此，研 收稿日期：201505-20 基金项目：中央高校基本科研业务费资金资助项目(FRF-TP-14-101A2)工程科学学报，第 38 卷，第 5 期: 637--643，2016 年 5 月 Chinese Journal of Engineering，Vol． 38，No． 5: 637--643，May 2016 DOI: 10． 13374 /j． issn2095--9389． 2016． 05． 007; http: / /journals． ustb． edu． cn 基于 PIV 技术的钢包临界卷渣行为水模型研究 吴华杰1，2) ，张 漓1) ，徐 阳1) ，岳 峰2) ，冯美兰1) ，魏崇一1) ，郭 浩1) 1) 北京科技大学冶金工程研究院，北京 100083 2) 北京科技大学钢铁共性技术协同创新中心，北京 100083  通信作者，E-mail: whjyeah@ 163． com 摘 要 基于粒子图像测速( particle image velocimetry，PIV) 技术，通过水模型研究临界卷渣条件下卷渣过程和钢包流场特 征，解析临界卷渣从发生到结束的整个过程卷渣处流场速度的变化情况，并定量分析炉渣运动黏度对临界卷渣速度的影响． 将临界卷渣速度的实验检测值与传统理论计算值进行比较和讨论． 研究结果表明: 临界卷渣过程从开始到结束可细分为八个 不同阶段，卷渣处流场速度变化在这八个阶段中先增大后减小再增大; 炉渣运动黏度对卷渣具有重要影响，炉渣运动黏度越 大，临界气量和临界卷渣速度越大，并且临界卷渣速度与炉渣运动黏度的关系更具线性相关性． 实验拟合得到炉渣运动黏度 与临界卷渣速度的关系式． 最后根据传统理论计算模型和实测结果提出实验条件下修正的临界卷渣速度表达式． 关键词 炼钢; 流场; 卷渣; 速度; 运动黏度; 粒子图像测速 分类号 TF769. 9 Water model study on critical slag entrapment behavior based on PIV technology WU Hua-jie 1，2)  ，ZHANG Li 1) ，XU Yang1) ，YUE Feng2) ，FEN Mei-lan1) ，WEI Chong-yi 1) ，GUO Hao 1) 1) Engineering Ｒesearch Institute，University of Science and Technology Beijing，Beijing，100083 2) Collaborative Innovation Center of Steel Technology，University of Science and Technology Beijing，Beijing 100083  Corresponding author，E-mail: whjyeah@ 163． com ABSTＲACT The slag entrapment process and the flow field of a specific ladle at critical flow rate are investigated based on particle image velocimetry ( PIV) technology，and the change of fluid velocity at the region where slag is entrapped into steel during the whole slag entrapment process is studied by water modelling． The influence of the kinematic viscosity of slag on the critical slag entrapment velocity is analyzed quantitatively． The critical slag entrapment velocity collected from experiments is compared with the calculated one by the traditional theory． It is shown that the critical slag entrapment process can be divided into 8 stages from the occurrence to the end，and the fluid velocity at the point where slag is entrapped into steel increases first，then decreases and increases again during the 8 stages． The kinematic viscosity of slag has great influence on slag entrapment． When the kinematic viscosity of slag increases，the critical flow rate and critical slag entrapment velocity enlarge，and the linear correlation relationship between the critical slag entrap￾ment velocity and the kinematic viscosity of slag becomes more obvious． A relational expression between the critical slag entrapment velocity and the kinematic viscosity of slag is derived from experimental data by liner fitting． At the end of this article，a correctional expression of the critical slag entrapment velocity is put forward based on the experimental data and the theoretically calculated values． KEY WOＲDS steelmaking; flow fields; slag entrapment; velocity; kinematic viscosity; particle image velocimetry 收稿日期: 2015--05--20 基金项目: 中央高校基本科研业务费资金资助项目( FＲF--TP--14--101A2) 钢铁冶金生产过程中钢包内钢液流动和卷渣行为 是一种普遍存在且对冶金效果有重要影响的现象． 吹 氩搅拌能扩大反应界面，加速反应物质的传递，均匀钢 液的成分和温度． 当搅拌强度较弱时，渣面处于一定程 度的凝固状态，传质较慢; 当搅拌比较强烈的情况下， 钢--渣界面强烈波动，甚至使渣滴卷入钢水． 因此，研