On the enhancement of heat transfer in a backward-facing step using porous baffles
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/35862 |
Resumo: | The backward-facing step is a geometry often used not only to investigate the accuracy and performance of numerical models, but also to analyse fundamental flow and heat transfer characteristics, and the impact of different configurations for the most diverse problems primarily due to its similitude to tangible and more complex geometries. One of the fields of interest is its use for heat transfer problems, which is the focus of this work: using porous baffles to help increase heat transfer. The position and the dimensions of the baffle and operation conditions are varied and simulated using a 2-dimensional finite volume method. Flow is assumed to be steady, incompressible, and laminar. The optimal set of parameters is investigated using Genetic Algorithms. Due to the computational cost associated with the cost function, achieving results has been challenging, requiring the parallel computation of the cost function to shorten the computational time associated with each generation of the optimisation process. It is found that positioning the baffle in a way that deflects flow from the entry to the opposite and heated wall considerably increases heat transfer. |
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On the enhancement of heat transfer in a backward-facing step using porous bafflesHeat TransferPorous mediaOptimisationGenetic AlgorithmsThe backward-facing step is a geometry often used not only to investigate the accuracy and performance of numerical models, but also to analyse fundamental flow and heat transfer characteristics, and the impact of different configurations for the most diverse problems primarily due to its similitude to tangible and more complex geometries. One of the fields of interest is its use for heat transfer problems, which is the focus of this work: using porous baffles to help increase heat transfer. The position and the dimensions of the baffle and operation conditions are varied and simulated using a 2-dimensional finite volume method. Flow is assumed to be steady, incompressible, and laminar. The optimal set of parameters is investigated using Genetic Algorithms. Due to the computational cost associated with the cost function, achieving results has been challenging, requiring the parallel computation of the cost function to shorten the computational time associated with each generation of the optimisation process. It is found that positioning the baffle in a way that deflects flow from the entry to the opposite and heated wall considerably increases heat transfer.Eccomas2024-01-08T11:34:06Z2024-01-082023-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/35862http://hdl.handle.net/10174/35862engCavaleiro Costa, S., Janeiro, F., Malico, I. (2023). On the enhancement of heat transfer in a backward-facing step using porous baffles. 6th International Conference on Numerical and Symbolic Computation. Developments and Applications – SYMCOMP 2023, Évora, Portugal, 30-31 March, pp. 193-200.smcac@uevora.ptfmtj@uevora.ptimbm@uevora.ptCavaleiro Costa, SérgioJaneiro, FernandoMalico, Isabelinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-09T01:47:07Zoai:dspace.uevora.pt:10174/35862Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:30:54.944064Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
On the enhancement of heat transfer in a backward-facing step using porous baffles |
title |
On the enhancement of heat transfer in a backward-facing step using porous baffles |
spellingShingle |
On the enhancement of heat transfer in a backward-facing step using porous baffles Cavaleiro Costa, Sérgio Heat Transfer Porous media Optimisation Genetic Algorithms |
title_short |
On the enhancement of heat transfer in a backward-facing step using porous baffles |
title_full |
On the enhancement of heat transfer in a backward-facing step using porous baffles |
title_fullStr |
On the enhancement of heat transfer in a backward-facing step using porous baffles |
title_full_unstemmed |
On the enhancement of heat transfer in a backward-facing step using porous baffles |
title_sort |
On the enhancement of heat transfer in a backward-facing step using porous baffles |
author |
Cavaleiro Costa, Sérgio |
author_facet |
Cavaleiro Costa, Sérgio Janeiro, Fernando Malico, Isabel |
author_role |
author |
author2 |
Janeiro, Fernando Malico, Isabel |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Cavaleiro Costa, Sérgio Janeiro, Fernando Malico, Isabel |
dc.subject.por.fl_str_mv |
Heat Transfer Porous media Optimisation Genetic Algorithms |
topic |
Heat Transfer Porous media Optimisation Genetic Algorithms |
description |
The backward-facing step is a geometry often used not only to investigate the accuracy and performance of numerical models, but also to analyse fundamental flow and heat transfer characteristics, and the impact of different configurations for the most diverse problems primarily due to its similitude to tangible and more complex geometries. One of the fields of interest is its use for heat transfer problems, which is the focus of this work: using porous baffles to help increase heat transfer. The position and the dimensions of the baffle and operation conditions are varied and simulated using a 2-dimensional finite volume method. Flow is assumed to be steady, incompressible, and laminar. The optimal set of parameters is investigated using Genetic Algorithms. Due to the computational cost associated with the cost function, achieving results has been challenging, requiring the parallel computation of the cost function to shorten the computational time associated with each generation of the optimisation process. It is found that positioning the baffle in a way that deflects flow from the entry to the opposite and heated wall considerably increases heat transfer. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-01-01T00:00:00Z 2024-01-08T11:34:06Z 2024-01-08 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/35862 http://hdl.handle.net/10174/35862 |
url |
http://hdl.handle.net/10174/35862 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Cavaleiro Costa, S., Janeiro, F., Malico, I. (2023). On the enhancement of heat transfer in a backward-facing step using porous baffles. 6th International Conference on Numerical and Symbolic Computation. Developments and Applications – SYMCOMP 2023, Évora, Portugal, 30-31 March, pp. 193-200. smcac@uevora.pt fmtj@uevora.pt imbm@uevora.pt |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Eccomas |
publisher.none.fl_str_mv |
Eccomas |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799136791200006144 |