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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F21%3APU138721" target="_blank" >RIV/00216305:26210/21:PU138721 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/2075-4701/11/2/237" target="_blank" >https://www.mdpi.com/2075-4701/11/2/237</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/met11020237" target="_blank" >10.3390/met11020237</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20303 - Thermodynamics

Projekt

<a href="/cs/project/GA19-20802S" target="_blank" >GA19-20802S: Spojený tepelně-mechanický model tuhnutí oceli pro predikci vzniku trhlin v reálném čase</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Metals

ISSN

2075-4701

e-ISSN

—

Svazek periodika

11

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

19

Strana od-do

1-19

Kód UT WoS článku

000622778600001

EID výsledku v databázi Scopus

2-s2.0-85100299693