Numerical simulations of installation effects caused by upstream elbows on single-path transit-time ultrasonic flare flow meters

Detalhes bibliográficos
Autor(a) principal: Martins, Ramon Silva
Data de Publicação: 2012
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
Texto Completo: http://repositorio.ufes.br/handle/10/4169
Resumo: Oil and gas industry requires accurate flow measurements since they are stated by law. Nev-ertheless, curves and other obstacles are commonly found in such industry field, which mayaffect the quality of flow measurement due to flow disturbances, such as swirl and velocity pro-file asymmetries. Single-path ultrasonic flow meters are often used in flare gas installations,despite being sensitive to such disturbances. The present work use commercial CFD codes toobtain disturbed flow fields downstream from single and double elbow pipe installations, aimingto investigate both magnitude and behaviour of such effects on ultrasonic flow measurement.Numerical integration is applied for several acoustic path arrangements, simulating single-pathultrasonic flow meters in different situations in order to evaluate its correction factor devia-tion under disturbed conditions. Reynolds numbers from1×104to2×106are considered.Transducers mounting angles from 0° to 180° are tested and axial positions up to 80D down-stream from the curve are evaluated. Results indicate that single-path ultrasonic flow meters aresensitive to installation effects. Correction factor deviations usually showed to be significantlyhigher than 2% for axial positions shorter than 20D, as recommended by several manufactur-ers or regulations. Nevertheless, deviations may reach 0.01% in some specific configurations,which suggests that ultrasonic flow measurement might be improved by rearranging flow meterdevice in favourable angular position and mainly by implementation of specific functions forcorrection factors under disturbed conditions
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spelling Ramos, RogérioMartins, Ramon SilvaMartins, Márcio FerreiraLoureiro, Juliana Braga RodriguesReis Junior, Neyal Costa2016-08-29T15:32:56Z2016-07-112016-08-29T15:32:56Z2012-05-23Oil and gas industry requires accurate flow measurements since they are stated by law. Nev-ertheless, curves and other obstacles are commonly found in such industry field, which mayaffect the quality of flow measurement due to flow disturbances, such as swirl and velocity pro-file asymmetries. Single-path ultrasonic flow meters are often used in flare gas installations,despite being sensitive to such disturbances. The present work use commercial CFD codes toobtain disturbed flow fields downstream from single and double elbow pipe installations, aimingto investigate both magnitude and behaviour of such effects on ultrasonic flow measurement.Numerical integration is applied for several acoustic path arrangements, simulating single-pathultrasonic flow meters in different situations in order to evaluate its correction factor devia-tion under disturbed conditions. Reynolds numbers from1×104to2×106are considered.Transducers mounting angles from 0° to 180° are tested and axial positions up to 80D down-stream from the curve are evaluated. Results indicate that single-path ultrasonic flow meters aresensitive to installation effects. Correction factor deviations usually showed to be significantlyhigher than 2% for axial positions shorter than 20D, as recommended by several manufactur-ers or regulations. Nevertheless, deviations may reach 0.01% in some specific configurations,which suggests that ultrasonic flow measurement might be improved by rearranging flow meterdevice in favourable angular position and mainly by implementation of specific functions forcorrection factors under disturbed conditionsL'industrie pétrolière et gazière exige des mesures de débit précises car elles sont stipulées par la loi. Néanmoins, des courbes et d'autres obstacles sont couramment rencontrés dans ce domaine de l'industrie, ce qui peut affecter la qualité de la mesure du débit en raison de perturbations du débit, telles que les asymétries du profil de tourbillon et de vitesse. Les débitmètres à ultrasons monovoie sont souvent utilisés dans les installations de gaz de torche, en dépit d'être sensible à de telles perturbations. Le présent travail utilise des codes CFD commerciaux pour obtenir des champs d'écoulement perturbés en aval d'installations à simple et double coude, visant pour étudier à la fois l'ampleur et le comportement de ces effets sur la mesure du débit par ultrasons. L'intégration numérique est appliquée pour plusieurs arrangements de trajet acoustique, simulant un trajet unique débitmètres à ultrasons dans différentes situations afin d'évaluer son écart de facteur de correction dans des conditions perturbées. Nombres de Reynolds de 1 × 104 à 2 × 106 sont considérés. Les angles de montage des transducteurs de 0° à 180° sont testés et les positions axiales jusqu'à 80D en aval de la courbe sont évaluées. Les résultats indiquent que les débitmètres à ultrasons à trajet unique sont sensible aux effets de l'installation. Les écarts des facteurs de correction se sont généralement avérés significativement supérieur à 2% pour les positions axiales inférieures à 20D, comme recommandé par plusieurs constructeurs ou réglementations. Néanmoins, les écarts peuvent atteindre 0,01% dans certaines configurations spécifiques, ce qui suggère que la mesure du débit par ultrasons pourrait être améliorée en réorganisant le débitmètre dispositif en position angulaire favorable et principalement par la mise en œuvre de fonctions spécifiques pour facteurs de correction dans des conditions perturbées.A indústria de petróleo e gás requer medições de vazão com baixa incerteza, uma vez que são estabelecidas por lei. Contudo, curvas e outros obstáculos são comumente encontrados nesse cenário, o que pode afetar a qualidade da medição de vazão em função de perturbações no escoamento, tais como swirl e assimetrias no peril de velocidades. Medidores de vazão por ultrassom de um canal são frequentemente utilizados em instalações de gás de queimadores, apesar de serem sensíveis a tais perturbações. O presente trabalho usa códigos comerciais de CFD para obter o escoamento à jusante de instalações com uma curva e duas curvas, visando a investigar a magnitude e o comportamento de tais efeitos na medição de vazão. Integração numérica é utilizada para diversos arranjos de caminho acústico, simulando medidores de vazão por ultrassom de um canal em várias condições para avaliar o desvio do fator de correção em escoamentos perturbados. Números de Reynolds de 1 x 104 a 2 x 106 são considerados. Ângulos de montagem dos transdutores de 0° a 180° são testados e posições axiais até 80D à jusante do obstáculo são avaliadas. Os resultados indicam que medidores de vazão por ultrassom são sensíveis aos efeitos de acidente de linha. O desvio do fator de correção mostra-se, em geral, consideravelmente maior que 2% em distâncias menores que 20D, conforme recomendado por alguns fabricantes e por leis. Não obstante, tais desvios podem atingir 0,01% em algumas configurações específicas, o que sugere que a medição de vazão por ultrassom pode ser melhorada pelo rearranjo do aparato em posição angular favorável e, principalmente, pela implementação de funções específicas para fatores de correção em condições perturbadas.TextMARTINS, Ramon Silva. Numerical simulations of installation effects caused by upstream elbows on single-path transit-time ultrasonic flare flow meters. 2012. 146 f. Dissertação (Mestrado em Engenharia Mecânica) - Universidade Federal do Espírito Santo, Centro Tecnológico, Vitória, 2012.http://repositorio.ufes.br/handle/10/4169porUniversidade Federal do Espírito SantoMestrado em Engenharia MecânicaPrograma de Pós-Graduação em Engenharia MecânicaUFESBRCentro TecnológicoUltrasonic flow meterInstallation effectsCorrection factorComputational fluid dynamicsDébitmètre à ultrasonsEffets d'installationFacteur de correctionMéchanique des fluides numériqueMedidor de vazao por ultrassomEfeitos de acidentes de linhaFator de correçãoDinâmica dos fluidos computacionalMedidores de fluxoMedidores de gásUltrassomFluidodinâmica computacionalEngenharia Mecânica621Numerical simulations of installation effects caused by upstream elbows on single-path transit-time ultrasonic flare flow metersSimulações numéricas de efeitos de acidentes de linha causados por curvas a montante de medidores de vazão por ultrassom de um canal por tempo de transito para gás de flareSimulations numériques des effets d'installation causés par les coudes en amont sur les débitmètres à ultrasons à temps de transit à voie uniqueinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)instname:Universidade Federal do Espírito Santo (UFES)instacron:UFESORIGINALDissertation_MartinsRS20131108-144619.pdfapplication/pdf9401224http://repositorio.ufes.br/bitstreams/b6384cc6-0334-47cf-b160-9ed47f5a5f8d/download3db21435dc365ec6e0dd83f6c3b5e644MD5110/41692024-07-17 17:01:44.91oai:repositorio.ufes.br:10/4169http://repositorio.ufes.brRepositório InstitucionalPUBhttp://repositorio.ufes.br/oai/requestopendoar:21082024-10-15T17:56:46.410002Repositório Institucional da Universidade Federal do Espírito Santo (riUfes) - Universidade Federal do Espírito Santo (UFES)false
dc.title.none.fl_str_mv Numerical simulations of installation effects caused by upstream elbows on single-path transit-time ultrasonic flare flow meters
dc.title.alternative.none.fl_str_mv Simulações numéricas de efeitos de acidentes de linha causados por curvas a montante de medidores de vazão por ultrassom de um canal por tempo de transito para gás de flare
Simulations numériques des effets d'installation causés par les coudes en amont sur les débitmètres à ultrasons à temps de transit à voie unique
title Numerical simulations of installation effects caused by upstream elbows on single-path transit-time ultrasonic flare flow meters
spellingShingle Numerical simulations of installation effects caused by upstream elbows on single-path transit-time ultrasonic flare flow meters
Martins, Ramon Silva
Ultrasonic flow meter
Installation effects
Correction factor
Computational fluid dynamics
Débitmètre à ultrasons
Effets d'installation
Facteur de correction
Méchanique des fluides numérique
Medidor de vazao por ultrassom
Efeitos de acidentes de linha
Fator de correção
Dinâmica dos fluidos computacional
Engenharia Mecânica
Medidores de fluxo
Medidores de gás
Ultrassom
Fluidodinâmica computacional
621
title_short Numerical simulations of installation effects caused by upstream elbows on single-path transit-time ultrasonic flare flow meters
title_full Numerical simulations of installation effects caused by upstream elbows on single-path transit-time ultrasonic flare flow meters
title_fullStr Numerical simulations of installation effects caused by upstream elbows on single-path transit-time ultrasonic flare flow meters
title_full_unstemmed Numerical simulations of installation effects caused by upstream elbows on single-path transit-time ultrasonic flare flow meters
title_sort Numerical simulations of installation effects caused by upstream elbows on single-path transit-time ultrasonic flare flow meters
author Martins, Ramon Silva
author_facet Martins, Ramon Silva
author_role author
dc.contributor.advisor1.fl_str_mv Ramos, Rogério
dc.contributor.author.fl_str_mv Martins, Ramon Silva
dc.contributor.referee1.fl_str_mv Martins, Márcio Ferreira
dc.contributor.referee2.fl_str_mv Loureiro, Juliana Braga Rodrigues
dc.contributor.referee3.fl_str_mv Reis Junior, Neyal Costa
contributor_str_mv Ramos, Rogério
Martins, Márcio Ferreira
Loureiro, Juliana Braga Rodrigues
Reis Junior, Neyal Costa
dc.subject.eng.fl_str_mv Ultrasonic flow meter
Installation effects
Correction factor
Computational fluid dynamics
topic Ultrasonic flow meter
Installation effects
Correction factor
Computational fluid dynamics
Débitmètre à ultrasons
Effets d'installation
Facteur de correction
Méchanique des fluides numérique
Medidor de vazao por ultrassom
Efeitos de acidentes de linha
Fator de correção
Dinâmica dos fluidos computacional
Engenharia Mecânica
Medidores de fluxo
Medidores de gás
Ultrassom
Fluidodinâmica computacional
621
dc.subject.fre.fl_str_mv Débitmètre à ultrasons
Effets d'installation
Facteur de correction
Méchanique des fluides numérique
dc.subject.por.fl_str_mv Medidor de vazao por ultrassom
Efeitos de acidentes de linha
Fator de correção
Dinâmica dos fluidos computacional
dc.subject.cnpq.fl_str_mv Engenharia Mecânica
dc.subject.br-rjbn.none.fl_str_mv Medidores de fluxo
Medidores de gás
Ultrassom
Fluidodinâmica computacional
dc.subject.udc.none.fl_str_mv 621
description Oil and gas industry requires accurate flow measurements since they are stated by law. Nev-ertheless, curves and other obstacles are commonly found in such industry field, which mayaffect the quality of flow measurement due to flow disturbances, such as swirl and velocity pro-file asymmetries. Single-path ultrasonic flow meters are often used in flare gas installations,despite being sensitive to such disturbances. The present work use commercial CFD codes toobtain disturbed flow fields downstream from single and double elbow pipe installations, aimingto investigate both magnitude and behaviour of such effects on ultrasonic flow measurement.Numerical integration is applied for several acoustic path arrangements, simulating single-pathultrasonic flow meters in different situations in order to evaluate its correction factor devia-tion under disturbed conditions. Reynolds numbers from1×104to2×106are considered.Transducers mounting angles from 0° to 180° are tested and axial positions up to 80D down-stream from the curve are evaluated. Results indicate that single-path ultrasonic flow meters aresensitive to installation effects. Correction factor deviations usually showed to be significantlyhigher than 2% for axial positions shorter than 20D, as recommended by several manufactur-ers or regulations. Nevertheless, deviations may reach 0.01% in some specific configurations,which suggests that ultrasonic flow measurement might be improved by rearranging flow meterdevice in favourable angular position and mainly by implementation of specific functions forcorrection factors under disturbed conditions
publishDate 2012
dc.date.issued.fl_str_mv 2012-05-23
dc.date.accessioned.fl_str_mv 2016-08-29T15:32:56Z
dc.date.available.fl_str_mv 2016-07-11
2016-08-29T15:32:56Z
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 MARTINS, Ramon Silva. Numerical simulations of installation effects caused by upstream elbows on single-path transit-time ultrasonic flare flow meters. 2012. 146 f. Dissertação (Mestrado em Engenharia Mecânica) - Universidade Federal do Espírito Santo, Centro Tecnológico, Vitória, 2012.
dc.identifier.uri.fl_str_mv http://repositorio.ufes.br/handle/10/4169
identifier_str_mv MARTINS, Ramon Silva. Numerical simulations of installation effects caused by upstream elbows on single-path transit-time ultrasonic flare flow meters. 2012. 146 f. Dissertação (Mestrado em Engenharia Mecânica) - Universidade Federal do Espírito Santo, Centro Tecnológico, Vitória, 2012.
url http://repositorio.ufes.br/handle/10/4169
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dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv Text
dc.publisher.none.fl_str_mv Universidade Federal do Espírito Santo
Mestrado em Engenharia Mecânica
dc.publisher.program.fl_str_mv Programa de Pós-Graduação em Engenharia Mecânica
dc.publisher.initials.fl_str_mv UFES
dc.publisher.country.fl_str_mv BR
dc.publisher.department.fl_str_mv Centro Tecnológico
publisher.none.fl_str_mv Universidade Federal do Espírito Santo
Mestrado em Engenharia Mecânica
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collection Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
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