Minor Loss Coefficient for Abrupt Section Changes in a Cylindrical Pipe Using a Numerical Approach

Abrupt section changes are a classic problem in the study of flow in cylindrical ducts or pipes. For its analysis, there are a wide set of exiting data from previous studies, among which some authors stand out and will be mentioned. Those previous works have been used to obtain reliable results for...

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Autores: González Pérez, José, Meana Fernández, Andrés|||0000-0002-1865-3814, Vallejo Pérez, Iván, Fernández Oro, Jesús Manuel|||0000-0002-4270-7552
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universidad de Oviedo (UNIOVI)
Repositorio:RUO. Repositorio Institucional de la Universidad de Oviedo
Idioma:inglés
OAI Identifier:oai:digibuo.uniovi.es:10651/76147
Acceso en línea:https://hdl.handle.net/10651/76147
https://dx.doi.org/10.3390/fluids9070152
Access Level:acceso abierto
Palabra clave:pipe flow
numerical flow simulations
CFD analysis
turbulent models
abrupt section change
area ratio
pipe flow patterns
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spelling Minor Loss Coefficient for Abrupt Section Changes in a Cylindrical Pipe Using a Numerical ApproachGonzález Pérez, JoséMeana Fernández, Andrés|||0000-0002-1865-3814Vallejo Pérez, IvánFernández Oro, Jesús Manuel|||0000-0002-4270-7552pipe flownumerical flow simulationsCFD analysisturbulent modelsabrupt section changearea ratiopipe flow patternsAbrupt section changes are a classic problem in the study of flow in cylindrical ducts or pipes. For its analysis, there are a wide set of exiting data from previous studies, among which some authors stand out and will be mentioned. Those previous works have been used to obtain reliable results for the resolution of section changes along a pipe, either due to cross area increases or reductions on a 1D basis. It is also known that a numerical 2D axisymmetric simulation (CFD) could find a consistent result compared to experimental data in almost all fluid flow fields. The main novelty of the present study is the development of a simple numerical approach used to solve the minor loss calculation. Firstly, a theoretical analysis is developed, and then the results of the numerical simulations carried out on the behavior that affects the water and air flow rate in an abrupt section change, for both contraction and expansion problems, are presented. In both cases, the results are analyzed with different meshes (discretizations) and turbulence models. Finally, the obtained numerical results are compared with those in the technical literature. Also, a theoretical approach is shown in order to show a whole frame of the discussion. The core results are the loss coefficient evolution as a function of the section change both for the sudden contraction and the expansion of a pipe flow. As the results follow the existing experimental values, it is concluded that the developed model provides a feasible and quick design tool to analyze possible geometrical changes without the need for further experiments.MDPI20242024-06-26journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articlehttps://hdl.handle.net/10651/76147https://dx.doi.org/10.3390/fluids9070152reponame:RUO. Repositorio Institucional de la Universidad de Oviedoinstname:Universidad de Oviedo (UNIOVI)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:digibuo.uniovi.es:10651/761472026-06-07T06:38:51Z
dc.title.none.fl_str_mv Minor Loss Coefficient for Abrupt Section Changes in a Cylindrical Pipe Using a Numerical Approach
title Minor Loss Coefficient for Abrupt Section Changes in a Cylindrical Pipe Using a Numerical Approach
spellingShingle Minor Loss Coefficient for Abrupt Section Changes in a Cylindrical Pipe Using a Numerical Approach
González Pérez, José
pipe flow
numerical flow simulations
CFD analysis
turbulent models
abrupt section change
area ratio
pipe flow patterns
title_short Minor Loss Coefficient for Abrupt Section Changes in a Cylindrical Pipe Using a Numerical Approach
title_full Minor Loss Coefficient for Abrupt Section Changes in a Cylindrical Pipe Using a Numerical Approach
title_fullStr Minor Loss Coefficient for Abrupt Section Changes in a Cylindrical Pipe Using a Numerical Approach
title_full_unstemmed Minor Loss Coefficient for Abrupt Section Changes in a Cylindrical Pipe Using a Numerical Approach
title_sort Minor Loss Coefficient for Abrupt Section Changes in a Cylindrical Pipe Using a Numerical Approach
dc.creator.none.fl_str_mv González Pérez, José
Meana Fernández, Andrés|||0000-0002-1865-3814
Vallejo Pérez, Iván
Fernández Oro, Jesús Manuel|||0000-0002-4270-7552
author González Pérez, José
author_facet González Pérez, José
Meana Fernández, Andrés|||0000-0002-1865-3814
Vallejo Pérez, Iván
Fernández Oro, Jesús Manuel|||0000-0002-4270-7552
author_role author
author2 Meana Fernández, Andrés|||0000-0002-1865-3814
Vallejo Pérez, Iván
Fernández Oro, Jesús Manuel|||0000-0002-4270-7552
author2_role author
author
author
dc.subject.none.fl_str_mv pipe flow
numerical flow simulations
CFD analysis
turbulent models
abrupt section change
area ratio
pipe flow patterns
topic pipe flow
numerical flow simulations
CFD analysis
turbulent models
abrupt section change
area ratio
pipe flow patterns
description Abrupt section changes are a classic problem in the study of flow in cylindrical ducts or pipes. For its analysis, there are a wide set of exiting data from previous studies, among which some authors stand out and will be mentioned. Those previous works have been used to obtain reliable results for the resolution of section changes along a pipe, either due to cross area increases or reductions on a 1D basis. It is also known that a numerical 2D axisymmetric simulation (CFD) could find a consistent result compared to experimental data in almost all fluid flow fields. The main novelty of the present study is the development of a simple numerical approach used to solve the minor loss calculation. Firstly, a theoretical analysis is developed, and then the results of the numerical simulations carried out on the behavior that affects the water and air flow rate in an abrupt section change, for both contraction and expansion problems, are presented. In both cases, the results are analyzed with different meshes (discretizations) and turbulence models. Finally, the obtained numerical results are compared with those in the technical literature. Also, a theoretical approach is shown in order to show a whole frame of the discussion. The core results are the loss coefficient evolution as a function of the section change both for the sudden contraction and the expansion of a pipe flow. As the results follow the existing experimental values, it is concluded that the developed model provides a feasible and quick design tool to analyze possible geometrical changes without the need for further experiments.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-06-26
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10651/76147
https://dx.doi.org/10.3390/fluids9070152
url https://hdl.handle.net/10651/76147
https://dx.doi.org/10.3390/fluids9070152
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
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
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
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:RUO. Repositorio Institucional de la Universidad de Oviedo
instname:Universidad de Oviedo (UNIOVI)
instname_str Universidad de Oviedo (UNIOVI)
reponame_str RUO. Repositorio Institucional de la Universidad de Oviedo
collection RUO. Repositorio Institucional de la Universidad de Oviedo
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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