On the nature of flow patterns and pressure drop fluctuations during flow boiling

Detalhes bibliográficos
Autor(a) principal: Oliveira, Jeferson Diehl de
Data de Publicação: 2021
Outros Autores: Copetti, Jacqueline Biancon, Indrusiak, Maria Luiza Sperb, Souza, Reinaldo Rodrigues, Lima, Rui Alberto Madeira Macedo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/75184
Resumo: This experimental and phenomenological study investigated fluctuations and characteristic frequencies of pressure drop and flow pattern during flow boiling of isobutane in a horizontal mini-channel 1.0 mm in diameter. The fluid was investigated at a saturation condition of 27◦C, heat flux ranging between 1 and 80 kW/m2 and mass flux ranging from 380 to 890 kg/(m2s). Six different flow patterns were identified based on the analysis of images captured from a high-speed camera: dispersed bubbles, plug, slug, churn, and annular (wavy and smooth). Characteristic frequencies were investigated from the time series using wavelet transform and the chaotic dynamics were studied using the largest Lyapunov exponent and phase portrait reconstruction. Results showed that pressure drop fluctuations presented predominance in low frequencies over time. On the other hand, higher frequencies in flow patterns were caused by their different morphology. Non-linear analysis showed that the nature of both pressure drop and flow pattern time series were chaotic for all flow conditions studied.
id RCAP_e5b5654d4cee962710ff6a9c7fae22cc
oai_identifier_str oai:repositorium.sdum.uminho.pt:1822/75184
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling On the nature of flow patterns and pressure drop fluctuations during flow boilingFlow patternsPressure dropTime seriesFrequency analysisChaosEngenharia e Tecnologia::Engenharia MecânicaScience & TechnologyThis experimental and phenomenological study investigated fluctuations and characteristic frequencies of pressure drop and flow pattern during flow boiling of isobutane in a horizontal mini-channel 1.0 mm in diameter. The fluid was investigated at a saturation condition of 27◦C, heat flux ranging between 1 and 80 kW/m2 and mass flux ranging from 380 to 890 kg/(m2s). Six different flow patterns were identified based on the analysis of images captured from a high-speed camera: dispersed bubbles, plug, slug, churn, and annular (wavy and smooth). Characteristic frequencies were investigated from the time series using wavelet transform and the chaotic dynamics were studied using the largest Lyapunov exponent and phase portrait reconstruction. Results showed that pressure drop fluctuations presented predominance in low frequencies over time. On the other hand, higher frequencies in flow patterns were caused by their different morphology. Non-linear analysis showed that the nature of both pressure drop and flow pattern time series were chaotic for all flow conditions studied.(undefined)ElsevierUniversidade do MinhoOliveira, Jeferson Diehl deCopetti, Jacqueline BianconIndrusiak, Maria Luiza SperbSouza, Reinaldo RodriguesLima, Rui Alberto Madeira Macedo20212021-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/75184engde Oliveira, J. D., Copetti, J. B., Indrusiak, M. L. S., de Souza, R. R., & Lima, R. (2021). On the nature of flow patterns and pressure drop fluctuations during flow boiling. International Journal of Multiphase Flow, 144, 103793. doi: https://doi.org/10.1016/j.ijmultiphaseflow.2021.1037930301-932210.1016/j.ijmultiphaseflow.2021.103793https://www.sciencedirect.com/science/article/pii/S0301932221002275info: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:RCAAP2023-07-21T12:05:17Zoai:repositorium.sdum.uminho.pt:1822/75184Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:55:42.746554Repositório 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 nature of flow patterns and pressure drop fluctuations during flow boiling
title On the nature of flow patterns and pressure drop fluctuations during flow boiling
spellingShingle On the nature of flow patterns and pressure drop fluctuations during flow boiling
Oliveira, Jeferson Diehl de
Flow patterns
Pressure drop
Time series
Frequency analysis
Chaos
Engenharia e Tecnologia::Engenharia Mecânica
Science & Technology
title_short On the nature of flow patterns and pressure drop fluctuations during flow boiling
title_full On the nature of flow patterns and pressure drop fluctuations during flow boiling
title_fullStr On the nature of flow patterns and pressure drop fluctuations during flow boiling
title_full_unstemmed On the nature of flow patterns and pressure drop fluctuations during flow boiling
title_sort On the nature of flow patterns and pressure drop fluctuations during flow boiling
author Oliveira, Jeferson Diehl de
author_facet Oliveira, Jeferson Diehl de
Copetti, Jacqueline Biancon
Indrusiak, Maria Luiza Sperb
Souza, Reinaldo Rodrigues
Lima, Rui Alberto Madeira Macedo
author_role author
author2 Copetti, Jacqueline Biancon
Indrusiak, Maria Luiza Sperb
Souza, Reinaldo Rodrigues
Lima, Rui Alberto Madeira Macedo
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Oliveira, Jeferson Diehl de
Copetti, Jacqueline Biancon
Indrusiak, Maria Luiza Sperb
Souza, Reinaldo Rodrigues
Lima, Rui Alberto Madeira Macedo
dc.subject.por.fl_str_mv Flow patterns
Pressure drop
Time series
Frequency analysis
Chaos
Engenharia e Tecnologia::Engenharia Mecânica
Science & Technology
topic Flow patterns
Pressure drop
Time series
Frequency analysis
Chaos
Engenharia e Tecnologia::Engenharia Mecânica
Science & Technology
description This experimental and phenomenological study investigated fluctuations and characteristic frequencies of pressure drop and flow pattern during flow boiling of isobutane in a horizontal mini-channel 1.0 mm in diameter. The fluid was investigated at a saturation condition of 27◦C, heat flux ranging between 1 and 80 kW/m2 and mass flux ranging from 380 to 890 kg/(m2s). Six different flow patterns were identified based on the analysis of images captured from a high-speed camera: dispersed bubbles, plug, slug, churn, and annular (wavy and smooth). Characteristic frequencies were investigated from the time series using wavelet transform and the chaotic dynamics were studied using the largest Lyapunov exponent and phase portrait reconstruction. Results showed that pressure drop fluctuations presented predominance in low frequencies over time. On the other hand, higher frequencies in flow patterns were caused by their different morphology. Non-linear analysis showed that the nature of both pressure drop and flow pattern time series were chaotic for all flow conditions studied.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-01-01T00:00:00Z
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/1822/75184
url http://hdl.handle.net/1822/75184
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv de Oliveira, J. D., Copetti, J. B., Indrusiak, M. L. S., de Souza, R. R., & Lima, R. (2021). On the nature of flow patterns and pressure drop fluctuations during flow boiling. International Journal of Multiphase Flow, 144, 103793. doi: https://doi.org/10.1016/j.ijmultiphaseflow.2021.103793
0301-9322
10.1016/j.ijmultiphaseflow.2021.103793
https://www.sciencedirect.com/science/article/pii/S0301932221002275
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str 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
repository.mail.fl_str_mv
_version_ 1799132343356620800

Registros relacionados