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Water Modeling on Circulating Flow and Mixing Time in a Ruhrstahl–Heraeus Vacuum Degasser
Steel Research International ( IF 1.9 ) Pub Date : 2021-07-22 , DOI: 10.1002/srin.202000608 Chang Liu 1 , Lifeng Zhang 2 , Fei Li 3 , Kaiyu Peng 4, 5 , Fenggang Liu 4, 5 , Zhentong Liu 4, 5 , Yanyu Zhao 4, 5 , Wen Yang 4 , Jing Zhang 6
Steel Research International ( IF 1.9 ) Pub Date : 2021-07-22 , DOI: 10.1002/srin.202000608 Chang Liu 1 , Lifeng Zhang 2 , Fei Li 3 , Kaiyu Peng 4, 5 , Fenggang Liu 4, 5 , Zhentong Liu 4, 5 , Yanyu Zhao 4, 5 , Wen Yang 4 , Jing Zhang 6
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A physical water model based on the similarity principle is established to investigate the fluid flow and mixing phenomena during the Ruhrstahl–Heraeus (RH) steel refining process. The velocity distribution and the turbulent features on the center section are obtained using particle image velocimetry (PIV) measurement. Two vortexes between the down-leg snorkel and the ladle sidewall are observed. The effects of the number of gas-injection nozzles and the liquid levels in the vacuum chamber on the fluid phenomena are performed. More injected nozzles and a higher liquid level in the vacuum chamber generate larger velocity in the ladle. Twenty monitors in the ladle are used to monitor the variation of the conductivity to obtain the mixing time, indicating that the mixing time varies much with locations. The distribution of the mixing time on the vertical center section of the ladle is obtained. Moreover, the relationship between the circulation rate and the mixing time is obtained, indicating that the mixing time decreases with increasing circulation rate, and the slope of their relationship is −0.35.
中文翻译：
Ruhrstahl–Heraeus 真空脱气机中循环流动和混合时间的水模拟
建立了基于相似原理的物理水模型，研究了鲁尔施塔尔-贺利氏（RH）炼钢过程中的流体流动和混合现象。中心部分的速度分布和湍流特征是使用粒子图像测速 (PIV) 测量获得的。观察到下腿通气管和钢包侧壁之间的两个涡流。进行了注气喷嘴数量和真空室内液位对流体现象的影响。更多的喷嘴和真空室中更高的液位会在钢包中产生更大的速度。钢包内的二十个监测器用于监测电导率的变化以获得混合时间，表明混合时间随位置变化很大。获得了钢包垂直中心段上混合时间的分布。并且得到了循环速率与混合时间的关系，表明混合时间随着循环速率的增加而减小，两者关系的斜率为-0.35。
更新日期：2021-07-22
中文翻译：
Ruhrstahl–Heraeus 真空脱气机中循环流动和混合时间的水模拟
建立了基于相似原理的物理水模型，研究了鲁尔施塔尔-贺利氏（RH）炼钢过程中的流体流动和混合现象。中心部分的速度分布和湍流特征是使用粒子图像测速 (PIV) 测量获得的。观察到下腿通气管和钢包侧壁之间的两个涡流。进行了注气喷嘴数量和真空室内液位对流体现象的影响。更多的喷嘴和真空室中更高的液位会在钢包中产生更大的速度。钢包内的二十个监测器用于监测电导率的变化以获得混合时间，表明混合时间随位置变化很大。获得了钢包垂直中心段上混合时间的分布。并且得到了循环速率与混合时间的关系，表明混合时间随着循环速率的增加而减小，两者关系的斜率为-0.35。
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