Modeling approach and numerical analysis of a roller-hearth reheating furnace with radiant tubes and heating process optimization

Precise knowledge of the heat transfer in a reheating furnace is important for optimizing the slab production process. In the present work, a new comprehensive CFD (Computational Fluid Dynamics) model for simulating the gas flow, combustion and heat transfer in a roller-hearth reheating furnace with...

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Autores principales:	Qiang Gao, Yuhua Pang, Qi Sun, Dong Liu, Zhe Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Reheating furnace Radiant tube Heat transfer CFD Heating process Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/b9a56d4b3b744e6e872e4ec4069ff6ad
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spelling	oai:doaj.org-article:b9a56d4b3b744e6e872e4ec4069ff6ad2021-11-04T04:31:00ZModeling approach and numerical analysis of a roller-hearth reheating furnace with radiant tubes and heating process optimization2214-157X10.1016/j.csite.2021.101618https://doaj.org/article/b9a56d4b3b744e6e872e4ec4069ff6ad2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214157X21007814https://doaj.org/toc/2214-157XPrecise knowledge of the heat transfer in a reheating furnace is important for optimizing the slab production process. In the present work, a new comprehensive CFD (Computational Fluid Dynamics) model for simulating the gas flow, combustion and heat transfer in a roller-hearth reheating furnace with radiant tubes was developed. In the model, the slab dynamic heating process was performed based on the steady-state gas phase combustion in the furnace. The movement of slabs in the furnace was achieved by dynamic mesh. The radiant tubes and the furnace were coupled into a whole and the indirect heat transfer in the furnace was achieved by radiant tubes. The slab temperature predicted by the model showed a good agreement with the experimental results through the validation of “Black Box”. According to the simulation results, the temperature field in the furnace and the slab heating process were reasonably evaluated. Compared with the heating process with the slab residence time of 60min in actual production, the new heating process was determined by the simulating time for the whole slab reaching the austenitizing temperature and the holding time, and the slab residence time is 67min.Qiang GaoYuhua PangQi SunDong LiuZhe ZhangElsevierarticleReheating furnaceRadiant tubeHeat transferCFDHeating processEngineering (General). Civil engineering (General)TA1-2040ENCase Studies in Thermal Engineering, Vol 28, Iss , Pp 101618- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Reheating furnace Radiant tube Heat transfer CFD Heating process Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Reheating furnace Radiant tube Heat transfer CFD Heating process Engineering (General). Civil engineering (General) TA1-2040 Qiang Gao Yuhua Pang Qi Sun Dong Liu Zhe Zhang Modeling approach and numerical analysis of a roller-hearth reheating furnace with radiant tubes and heating process optimization
description	Precise knowledge of the heat transfer in a reheating furnace is important for optimizing the slab production process. In the present work, a new comprehensive CFD (Computational Fluid Dynamics) model for simulating the gas flow, combustion and heat transfer in a roller-hearth reheating furnace with radiant tubes was developed. In the model, the slab dynamic heating process was performed based on the steady-state gas phase combustion in the furnace. The movement of slabs in the furnace was achieved by dynamic mesh. The radiant tubes and the furnace were coupled into a whole and the indirect heat transfer in the furnace was achieved by radiant tubes. The slab temperature predicted by the model showed a good agreement with the experimental results through the validation of “Black Box”. According to the simulation results, the temperature field in the furnace and the slab heating process were reasonably evaluated. Compared with the heating process with the slab residence time of 60min in actual production, the new heating process was determined by the simulating time for the whole slab reaching the austenitizing temperature and the holding time, and the slab residence time is 67min.
format	article
author	Qiang Gao Yuhua Pang Qi Sun Dong Liu Zhe Zhang
author_facet	Qiang Gao Yuhua Pang Qi Sun Dong Liu Zhe Zhang
author_sort	Qiang Gao
title	Modeling approach and numerical analysis of a roller-hearth reheating furnace with radiant tubes and heating process optimization
title_short	Modeling approach and numerical analysis of a roller-hearth reheating furnace with radiant tubes and heating process optimization
title_full	Modeling approach and numerical analysis of a roller-hearth reheating furnace with radiant tubes and heating process optimization
title_fullStr	Modeling approach and numerical analysis of a roller-hearth reheating furnace with radiant tubes and heating process optimization
title_full_unstemmed	Modeling approach and numerical analysis of a roller-hearth reheating furnace with radiant tubes and heating process optimization
title_sort	modeling approach and numerical analysis of a roller-hearth reheating furnace with radiant tubes and heating process optimization
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/b9a56d4b3b744e6e872e4ec4069ff6ad
work_keys_str_mv	AT qianggao modelingapproachandnumericalanalysisofarollerhearthreheatingfurnacewithradianttubesandheatingprocessoptimization AT yuhuapang modelingapproachandnumericalanalysisofarollerhearthreheatingfurnacewithradianttubesandheatingprocessoptimization AT qisun modelingapproachandnumericalanalysisofarollerhearthreheatingfurnacewithradianttubesandheatingprocessoptimization AT dongliu modelingapproachandnumericalanalysisofarollerhearthreheatingfurnacewithradianttubesandheatingprocessoptimization AT zhezhang modelingapproachandnumericalanalysisofarollerhearthreheatingfurnacewithradianttubesandheatingprocessoptimization
_version_	1718445296501915648

Modeling approach and numerical analysis of a roller-hearth reheating furnace with radiant tubes and heating process optimization

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