Thermal Mixing Analysis in a Ladle Utilizing Physical and Numerical Modeling through Planar Laser-induced Fluorescence (PLIF) Technique

IF 1.6 4区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING
Adrián Amaro-Villeda, Abhishek Dutta, Marco Guevara-Castillo, Luis Enrique Jardón-Pérez, Marco Aurelio Ramírez-Argáez
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Abstract

Thermal mixing during the gas stirring operation and arc heating in a steel ladle is analyzed through the modern tools of a physical model using PIV (Particle Image Velocimetry) and thermal PLIF (Planar Laser Induced Fluorescence), whose velocity and temperature fields were used to fine-tune and validate a multiphase Eulerian two-phase mathematical model. Agreement on both fluid dynamics and thermal evolution is reasonably good between experiments and the predictions obtained by the mathematical model of the physical model. The analysis coming from the numerical model validated by the physical model measurements included the thermal mixing and energy efficiency of single nozzle injection in centric and eccentric (4/5R) gas injection. It turned out that energy efficiency in the centric gas injection is 20% more efficient than in eccentric injection. Then, under the same heat flux provided, the maximum temperature of the water in the centric gas injection would be higher than the maximum temperature reached in the eccentric mode with the same gas flow rate. Good heat transfer happens when the heat source impinges in a fluid region with high circulation and turbulent dispersion.

Abstract Image Fullsize Image
通过平面激光诱导荧光 (PLIF) 技术利用物理和数值建模分析钢包中的热混合情况
通过使用 PIV(粒子图像测速仪)和热 PLIF(平面激光诱导荧光)物理模型的现代工具,分析了钢水包中气体搅拌操作和电弧加热过程中的热混合,其速度场和温度场用于微调和验证多相欧拉两相数学模型。实验结果与物理模型数学模型的预测结果在流体动力学和热演化方面的一致性相当好。由物理模型测量结果验证的数值模型得出的分析结果包括:在向心和偏心(4/5R)气体喷射中,单喷嘴喷射的热混合和能效。结果表明,向心注气的能效比偏心注气的能效高 20%。那么,在提供相同热通量的情况下,在相同气体流速下,向心注气模式下水的最高温度将高于偏心模式下达到的最高温度。当热源撞击到高循环和湍流分散的流体区域时,就会产生良好的热传递。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Isij International
Isij International 工程技术-冶金工程
CiteScore
3.40
自引率
16.70%
发文量
268
审稿时长
2.6 months
期刊介绍: The journal provides an international medium for the publication of fundamental and technological aspects of the properties, structure, characterization and modeling, processing, fabrication, and environmental issues of iron and steel, along with related engineering materials.
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