Numerical study of transient heat transfer in a rotating roll exposed to heat flux and convection

The hot rolling process experiences intense thermal cycles: they receive peaks of heat flux when the steel strip contacts them and, immediately afterwards, are cooled by water sprays or by the environment. If the temperature gradient is not controlled, cracks and ovalizations appear that shorten the...

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Detalles Bibliográficos
Autor: Castillo Mestre, Albert Bartolomé
Tipo de recurso: tesis de maestría
Fecha de publicación:2025
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/446071
Acceso en línea:https://hdl.handle.net/2117/446071
Access Level:acceso abierto
Palabra clave:Thermodynamics
Fluid mechanics
Strength of materials
Termodinàmica
Mecànica de fluids
Resistència de materials
Àrees temàtiques de la UPC::Enginyeria mecànica
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spelling Numerical study of transient heat transfer in a rotating roll exposed to heat flux and convectionCastillo Mestre, Albert BartoloméThermodynamicsFluid mechanicsStrength of materialsTermodinàmicaMecànica de fluidsResistència de materialsÀrees temàtiques de la UPC::Enginyeria mecànicaThe hot rolling process experiences intense thermal cycles: they receive peaks of heat flux when the steel strip contacts them and, immediately afterwards, are cooled by water sprays or by the environment. If the temperature gradient is not controlled, cracks and ovalizations appear that shorten the operating life of the roll and generate surface defects in the strip. The main objective of this Master’s Thesis is to develop a numerical tool that anticipates, in real time, the transient evo- lution of temperature within a solid rotating roll, thereby facilitating the design and control of cooling systems. To this end, an existing analytical solution is used as a reference and three numerical methods in a transient regime are implemented: (i) a first-order explicit scheme, simple but limited by stability; (ii) a classical implicit Crank–Nicolson scheme, which exhibits high accuracy; and (iii) a second-order implicit scheme (BDF2), which combines robustness and speed. The algorithms are programmed in Python. The evaluation compares the accuracy and computational cost of the three methods against the reference analytical solution, with the aim of identifying the most convenient procedure according to industrial criteria of allowable error and computation time. The work concludes with the advantages of each method and describes the following steps of the study, necessary before performing extensions to refined meshes and more complex assemblies.Universitat Politècnica de CatalunyaOliva Llena, Asensio20252025-07-0120252025-11-11master thesishttp://purl.org/coar/resource_type/c_bdccNAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/masterThesisapplication/pdfhttps://hdl.handle.net/2117/446071reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/4460712026-05-27T15:37:01Z
dc.title.none.fl_str_mv Numerical study of transient heat transfer in a rotating roll exposed to heat flux and convection
title Numerical study of transient heat transfer in a rotating roll exposed to heat flux and convection
spellingShingle Numerical study of transient heat transfer in a rotating roll exposed to heat flux and convection
Castillo Mestre, Albert Bartolomé
Thermodynamics
Fluid mechanics
Strength of materials
Termodinàmica
Mecànica de fluids
Resistència de materials
Àrees temàtiques de la UPC::Enginyeria mecànica
title_short Numerical study of transient heat transfer in a rotating roll exposed to heat flux and convection
title_full Numerical study of transient heat transfer in a rotating roll exposed to heat flux and convection
title_fullStr Numerical study of transient heat transfer in a rotating roll exposed to heat flux and convection
title_full_unstemmed Numerical study of transient heat transfer in a rotating roll exposed to heat flux and convection
title_sort Numerical study of transient heat transfer in a rotating roll exposed to heat flux and convection
dc.creator.none.fl_str_mv Castillo Mestre, Albert Bartolomé
author Castillo Mestre, Albert Bartolomé
author_facet Castillo Mestre, Albert Bartolomé
author_role author
dc.contributor.none.fl_str_mv Oliva Llena, Asensio
dc.subject.none.fl_str_mv Thermodynamics
Fluid mechanics
Strength of materials
Termodinàmica
Mecànica de fluids
Resistència de materials
Àrees temàtiques de la UPC::Enginyeria mecànica
topic Thermodynamics
Fluid mechanics
Strength of materials
Termodinàmica
Mecànica de fluids
Resistència de materials
Àrees temàtiques de la UPC::Enginyeria mecànica
description The hot rolling process experiences intense thermal cycles: they receive peaks of heat flux when the steel strip contacts them and, immediately afterwards, are cooled by water sprays or by the environment. If the temperature gradient is not controlled, cracks and ovalizations appear that shorten the operating life of the roll and generate surface defects in the strip. The main objective of this Master’s Thesis is to develop a numerical tool that anticipates, in real time, the transient evo- lution of temperature within a solid rotating roll, thereby facilitating the design and control of cooling systems. To this end, an existing analytical solution is used as a reference and three numerical methods in a transient regime are implemented: (i) a first-order explicit scheme, simple but limited by stability; (ii) a classical implicit Crank–Nicolson scheme, which exhibits high accuracy; and (iii) a second-order implicit scheme (BDF2), which combines robustness and speed. The algorithms are programmed in Python. The evaluation compares the accuracy and computational cost of the three methods against the reference analytical solution, with the aim of identifying the most convenient procedure according to industrial criteria of allowable error and computation time. The work concludes with the advantages of each method and describes the following steps of the study, necessary before performing extensions to refined meshes and more complex assemblies.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-07-01
2025
2025-11-11
dc.type.none.fl_str_mv master thesis
http://purl.org/coar/resource_type/c_bdcc
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/446071
url https://hdl.handle.net/2117/446071
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universitat Politècnica de Catalunya
publisher.none.fl_str_mv Universitat Politècnica de Catalunya
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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