Simulação numérica de nanofluidos escoando no interior de dutos retos
Autor(a) principal: | |
---|---|
Data de Publicação: | 2011 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFU |
Texto Completo: | https://repositorio.ufu.br/handle/123456789/14894 |
Resumo: | This work aimed to show the enhancement of the convective heat transfer coefficient of nanofluids flowing in a straight pipe. For this purpose, the nanofluid was simulated numerically, both laminar and turbulent flow, and subjected to a boundary condition of constant heat flow through the wall, under the assumption that nanofluids have characteristics of single-phase fluids with modified properties. With the knowledge that the properties of nanofluids are function of the properties of both, nanoparticles and base fluid, was used a variety of combinations of these components in order to show a trend on the utilization of nanoparticles and base fluids of different natures. Thus, were used metallic nanoparticles (silver, copper and iron) and metallic oxides (alumina and copper oxide) dispersed in deionized water, ethylene glycol and poly-alpha-olefins. The properties of nanofluids were calculated by the conservative theoretical models for thermal conductivity and viscosity, and applying the rule of mixtures for density and specific heat, based on the properties of the components found in the literature. With these properties calculated, each nanofluid was simulated using the computational solver ANSYS®, at hydrodynamic and thermal conditions established, to obtain the corresponding fields for velocity, temperature and pressure. Finally, the results of simulation were processed to visualize the behavior of the convective heat transfer coefficient. Under the assumptions pre-defined, the highest enhancements of convective heat transfer of nanofluids were found with nanoparticles of metal oxides, relative to those of metallic nanoparticles. |
id |
UFU_a78afd29d3ffc3e0a1d7cefd1e09bb48 |
---|---|
oai_identifier_str |
oai:repositorio.ufu.br:123456789/14894 |
network_acronym_str |
UFU |
network_name_str |
Repositório Institucional da UFU |
repository_id_str |
|
spelling |
2016-06-22T18:40:16Z2012-05-112016-06-22T18:40:16Z2011-09-01CHAUPIS, Joseph Edher Ramirez. Numerical simulation of nanofluids flowing through a straight pipe. 2011. 164 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2011.https://repositorio.ufu.br/handle/123456789/14894This work aimed to show the enhancement of the convective heat transfer coefficient of nanofluids flowing in a straight pipe. For this purpose, the nanofluid was simulated numerically, both laminar and turbulent flow, and subjected to a boundary condition of constant heat flow through the wall, under the assumption that nanofluids have characteristics of single-phase fluids with modified properties. With the knowledge that the properties of nanofluids are function of the properties of both, nanoparticles and base fluid, was used a variety of combinations of these components in order to show a trend on the utilization of nanoparticles and base fluids of different natures. Thus, were used metallic nanoparticles (silver, copper and iron) and metallic oxides (alumina and copper oxide) dispersed in deionized water, ethylene glycol and poly-alpha-olefins. The properties of nanofluids were calculated by the conservative theoretical models for thermal conductivity and viscosity, and applying the rule of mixtures for density and specific heat, based on the properties of the components found in the literature. With these properties calculated, each nanofluid was simulated using the computational solver ANSYS®, at hydrodynamic and thermal conditions established, to obtain the corresponding fields for velocity, temperature and pressure. Finally, the results of simulation were processed to visualize the behavior of the convective heat transfer coefficient. Under the assumptions pre-defined, the highest enhancements of convective heat transfer of nanofluids were found with nanoparticles of metal oxides, relative to those of metallic nanoparticles.Esta dissertação teve como objetivo evidenciar a intensificação do coeficiente de transferência de calor por convecção de um escoamento utilizando nanofluidos. Para isto, o nanofluido foi simulado numericamente escoando dentro de uma tubulação horizontal reta, tanto em regime laminar como em regime turbulento, e submetida a uma condição de contorno de fluxo de calor constante através da parede, sob a hipótese que o nanofluido possui características de fluido monofásico com propriedades modificadas. Sabendo-se que as propriedades dos nanofluidos são função das propriedades das nanopartículas e do fluido base, foi utilizada uma variedade de combinações desses componentes a fim de mostrar uma tendência sobre o uso de nanopartículas e fluidos base de diferentes naturezas. Desse modo, foram utilizadas nanopartículas metálicas (prata, cobre e ferro) e de óxidos metálicos (alumina e óxido de cobre) dispersas em água deionizada, etileno glicol e poli-alfa-oleofin. As propriedades dos nanofluidos foram calculadas mediante modelos teóricos conservadores para a condutividade térmica e viscosidade, e aplicando a regra das misturas para a massa específica e o calor específico, com base nas propriedades dos componentes encontradas na literatura. Com as propriedades calculadas, cada nanofluido foi simulado com uso do software ANSYS ® às condições hidrodinâmicas e térmicas estabelecidas para obter os campos de velocidade, temperatura e pressão correspondentes. Finalmente, os resultados das simulações foram processados para visualizar o comportamento do coeficiente de transferência de calor. Sob as hipóteses definidas, as maiores intensificações na transferência de calor por convecção foram as dos nanofluidos com nanopartículas de óxidos metálicos com relação aos de nanopartículas metálicas.Fundação de Amparo a Pesquisa do Estado de Minas GeraisMestre em Engenharia Mecânicaapplication/pdfporUniversidade Federal de UberlândiaPrograma de Pós-graduação em Engenharia MecânicaUFUBREngenhariasNanofluidosSimulação numéricaTransferência de calorCondutividade térmicaCalor - TransmissãoCondutividade térmicaNanofluidsNumerical simulationHeat transferThermal conductivityCNPQ::ENGENHARIAS::ENGENHARIA ELETRICASimulação numérica de nanofluidos escoando no interior de dutos retosNumerical simulation of nanofluids flowing through a straight pipeinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisBandarra Filho, Enio Pedonehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4702556U9Carvalho, Solidônio Rodrigues dehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4762468A6Passos, Júlio Césarhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4781244Z6http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4420729E5Chaupis, Joseph Edher Ramirezinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFUinstname:Universidade Federal de Uberlândia (UFU)instacron:UFUTHUMBNAILd.pdf.jpgd.pdf.jpgGenerated Thumbnailimage/jpeg1231https://repositorio.ufu.br/bitstream/123456789/14894/3/d.pdf.jpg3e1e001d65db80664c5f8fb684c98b76MD53ORIGINALd.pdfapplication/pdf5079443https://repositorio.ufu.br/bitstream/123456789/14894/1/d.pdf088ec13dc8dc56ed9850b4aa454278ebMD51TEXTd.pdf.txtd.pdf.txtExtracted texttext/plain250021https://repositorio.ufu.br/bitstream/123456789/14894/2/d.pdf.txt7bad07e9a2f56d8e3ad57cd35a93d525MD52123456789/148942016-06-23 04:08:07.504oai:repositorio.ufu.br:123456789/14894Repositório InstitucionalONGhttp://repositorio.ufu.br/oai/requestdiinf@dirbi.ufu.bropendoar:2016-06-23T07:08:07Repositório Institucional da UFU - Universidade Federal de Uberlândia (UFU)false |
dc.title.por.fl_str_mv |
Simulação numérica de nanofluidos escoando no interior de dutos retos |
dc.title.alternative.eng.fl_str_mv |
Numerical simulation of nanofluids flowing through a straight pipe |
title |
Simulação numérica de nanofluidos escoando no interior de dutos retos |
spellingShingle |
Simulação numérica de nanofluidos escoando no interior de dutos retos Chaupis, Joseph Edher Ramirez Nanofluidos Simulação numérica Transferência de calor Condutividade térmica Calor - Transmissão Condutividade térmica Nanofluids Numerical simulation Heat transfer Thermal conductivity CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA |
title_short |
Simulação numérica de nanofluidos escoando no interior de dutos retos |
title_full |
Simulação numérica de nanofluidos escoando no interior de dutos retos |
title_fullStr |
Simulação numérica de nanofluidos escoando no interior de dutos retos |
title_full_unstemmed |
Simulação numérica de nanofluidos escoando no interior de dutos retos |
title_sort |
Simulação numérica de nanofluidos escoando no interior de dutos retos |
author |
Chaupis, Joseph Edher Ramirez |
author_facet |
Chaupis, Joseph Edher Ramirez |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Bandarra Filho, Enio Pedone |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4702556U9 |
dc.contributor.referee1.fl_str_mv |
Carvalho, Solidônio Rodrigues de |
dc.contributor.referee1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4762468A6 |
dc.contributor.referee2.fl_str_mv |
Passos, Júlio César |
dc.contributor.referee2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4781244Z6 |
dc.contributor.authorLattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4420729E5 |
dc.contributor.author.fl_str_mv |
Chaupis, Joseph Edher Ramirez |
contributor_str_mv |
Bandarra Filho, Enio Pedone Carvalho, Solidônio Rodrigues de Passos, Júlio César |
dc.subject.por.fl_str_mv |
Nanofluidos Simulação numérica Transferência de calor Condutividade térmica Calor - Transmissão Condutividade térmica |
topic |
Nanofluidos Simulação numérica Transferência de calor Condutividade térmica Calor - Transmissão Condutividade térmica Nanofluids Numerical simulation Heat transfer Thermal conductivity CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA |
dc.subject.eng.fl_str_mv |
Nanofluids Numerical simulation Heat transfer Thermal conductivity |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA |
description |
This work aimed to show the enhancement of the convective heat transfer coefficient of nanofluids flowing in a straight pipe. For this purpose, the nanofluid was simulated numerically, both laminar and turbulent flow, and subjected to a boundary condition of constant heat flow through the wall, under the assumption that nanofluids have characteristics of single-phase fluids with modified properties. With the knowledge that the properties of nanofluids are function of the properties of both, nanoparticles and base fluid, was used a variety of combinations of these components in order to show a trend on the utilization of nanoparticles and base fluids of different natures. Thus, were used metallic nanoparticles (silver, copper and iron) and metallic oxides (alumina and copper oxide) dispersed in deionized water, ethylene glycol and poly-alpha-olefins. The properties of nanofluids were calculated by the conservative theoretical models for thermal conductivity and viscosity, and applying the rule of mixtures for density and specific heat, based on the properties of the components found in the literature. With these properties calculated, each nanofluid was simulated using the computational solver ANSYS®, at hydrodynamic and thermal conditions established, to obtain the corresponding fields for velocity, temperature and pressure. Finally, the results of simulation were processed to visualize the behavior of the convective heat transfer coefficient. Under the assumptions pre-defined, the highest enhancements of convective heat transfer of nanofluids were found with nanoparticles of metal oxides, relative to those of metallic nanoparticles. |
publishDate |
2011 |
dc.date.issued.fl_str_mv |
2011-09-01 |
dc.date.available.fl_str_mv |
2012-05-11 2016-06-22T18:40:16Z |
dc.date.accessioned.fl_str_mv |
2016-06-22T18:40:16Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
CHAUPIS, Joseph Edher Ramirez. Numerical simulation of nanofluids flowing through a straight pipe. 2011. 164 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2011. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufu.br/handle/123456789/14894 |
identifier_str_mv |
CHAUPIS, Joseph Edher Ramirez. Numerical simulation of nanofluids flowing through a straight pipe. 2011. 164 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2011. |
url |
https://repositorio.ufu.br/handle/123456789/14894 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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 |
Universidade Federal de Uberlândia |
dc.publisher.program.fl_str_mv |
Programa de Pós-graduação em Engenharia Mecânica |
dc.publisher.initials.fl_str_mv |
UFU |
dc.publisher.country.fl_str_mv |
BR |
dc.publisher.department.fl_str_mv |
Engenharias |
publisher.none.fl_str_mv |
Universidade Federal de Uberlândia |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFU instname:Universidade Federal de Uberlândia (UFU) instacron:UFU |
instname_str |
Universidade Federal de Uberlândia (UFU) |
instacron_str |
UFU |
institution |
UFU |
reponame_str |
Repositório Institucional da UFU |
collection |
Repositório Institucional da UFU |
bitstream.url.fl_str_mv |
https://repositorio.ufu.br/bitstream/123456789/14894/3/d.pdf.jpg https://repositorio.ufu.br/bitstream/123456789/14894/1/d.pdf https://repositorio.ufu.br/bitstream/123456789/14894/2/d.pdf.txt |
bitstream.checksum.fl_str_mv |
3e1e001d65db80664c5f8fb684c98b76 088ec13dc8dc56ed9850b4aa454278eb 7bad07e9a2f56d8e3ad57cd35a93d525 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFU - Universidade Federal de Uberlândia (UFU) |
repository.mail.fl_str_mv |
diinf@dirbi.ufu.br |
_version_ |
1802110436154277888 |