钢包热状态的数学模型

IF 1.7 3区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Ironmaking & Steelmaking Pub Date : 2023-05-14 DOI:10.1080/03019233.2023.2201544

Ilpo Mäkelä, Ville-Valtteri Visuri, T. Fabritius

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引用次数: 0

摘要

摘要建立了一个动态的一维数学模型来预测钢包的热状态。该模型旨在用于过程控制应用，在过程控制应用中，除了模型精度外，还需要快速的计算时间。使用有限差分法对计算域进行离散化，并使用隐式Euler和Crank–Nicolson方法进行时间积分，比较了两者的性能。该模型是用Python编程语言实现的，并使用我们自己的测量数据和文献中的其他研究进行了验证。结果表明，该模型最多能再现5°C内钢包的实测温度演变。在冷却过程中观察到最差的性能，其中模型低估了最内部测量点的温度高达200°C。计算时间约为16-23 对于一个小时的模拟，该模型在计算上足够快，可以用于在线应用。

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A mathematical model for the thermal state of a steel ladle

ABSTRACT A dynamic one-dimensional mathematical model was developed for predicting the thermal state of a steelmaking ladle. The model is intended to be used in process control applications, in which fast computational times are desirable alongside model accuracy. The calculation domain was discretized using the finite difference method, and time integration was performed using both the implicit Euler and Crank–Nicolson methods, the performances of which were compared. The model was implemented in Python programming language and validated using data from our own measurements and other studies available in the literature. The results indicate that the model can reproduce the measured temperature evolution of the ladles within 5°C at best. The worst performance was observed during cooling, where the model underestimates the temperature at the innermost measurement point by up to 200°C. With computation times of around 16–23 s for one hour of simulation, the model is computationally sufficiently fast for online applications.

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来源期刊

Ironmaking & Steelmaking 工程技术-冶金工程

CiteScore

3.70

自引率

9.50%

发文量

125

审稿时长

2.9 months

期刊介绍： Ironmaking & Steelmaking: Processes, Products and Applications monitors international technological advances in the industry with a strong element of engineering and product related material. First class refereed papers from the international iron and steel community cover all stages of the process, from ironmaking and its attendant technologies, through casting and steelmaking, to rolling, forming and delivery of the product, including monitoring, quality assurance and environmental issues. The journal also carries research profiles, features on technological and industry developments and expert reviews on major conferences.