Detail publikace

Comparison of optimization-regulation algorithms for secondary cooling in continuous steel casting

BŘEZINA, M. MAUDER, T. KLIMEŠ, L. ŠTĚTINA, J.

Originální název

Comparison of optimization-regulation algorithms for secondary cooling in continuous steel casting

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The paper presents the comparison of optimization-regulation algorithms applied to secondary cooling zone in continuous steel casting where the semi-product withdraws most of its thermal energy. In steel production, requirements towards obtaining defect-free semi-products are in-creasing day by day and the products, which would satisfy requirements of the consumers a few decades ago, are now far below the minimum required quality. To fulfill the quality demands towards minimum occurrence of defects in secondary cooling as possible, some regulation in the casting process is needed. The main concept of this paper is to analyze and compare the most known metaheuristic optimization approaches applied to the continuous steel casting process. Heat transfer and solidification phenomena are solved by using a fast 2.5D slice numerical model. The objective function is set to minimize the surface temperature differences in secondary cooling zones between calculated and targeted surface temperatures by suitable water flow rates through cooling nozzles. Obtained optimization results are discussed and the most suitable algorithm for this type of optimization problem is identified. Temperature deviations and cooling water flow rates in secondary cooling zone together with convergence rate and operation times needed to reach the stop criterium for each optimization approach are analysed and compared to target casting conditions based on a required temperature distribution of the strand. The paper also contains a brief description of applied heuristic algorithms. Some of the algorithms exhibited faster convergence rate than others, but the optimal solution was reached in every optimization run by only one algorithm.

Klíčová slova

continuous casting; secondary cooling; numerical modeling; thermal-solidification model; heu-ristic optimization

Autoři

BŘEZINA, M.; MAUDER, T.; KLIMEŠ, L.; ŠTĚTINA, J.

Vydáno

1. 2. 2021

Nakladatel

MDPI

ISSN

2075-4701

Periodikum

Metals

Ročník

11

Číslo

2

Stát

Švýcarská konfederace

Strany od

1

Strany do

19

Strany počet

19

URL

https://www.mdpi.com/2075-4701/11/2/237

Plný text v Digitální knihovně

http://hdl.handle.net/11012/196750

BibTex

@article{BUT168277,
  author="Michal {Březina} and Tomáš {Mauder} and Lubomír {Klimeš} and Josef {Štětina}",
  title="Comparison of optimization-regulation algorithms for secondary cooling in continuous steel casting",
  journal="Metals",
  year="2021",
  volume="11",
  number="2",
  pages="1--19",
  doi="10.3390/met11020237",
  issn="2075-4701",
  url="https://www.mdpi.com/2075-4701/11/2/237"
}