Parametric analysis of a phenomenological model for vortex-induced motions of monocolumn platforms
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-58782011000200004 |
Resumo: | Phenomenological models are an important branch in VIV (Vortex-Induced Vibrations) and in VIM (Vortex-Induced Motions) studies to complement the results achieved via CFD (Computational Fluid Dynamics), as the latter tool is not presently a suitable tool for intense use in engineering analysis, due to high computer power requirements. A phenomenological model for evaluating the VIM on monocolumn platforms is presented and its results are compared with experimental ones. The main objective is to present a parametric analysis, focusing on the physical significance of the modifications in parameter values. The following parameters are varied: aspect ratio (L/D), structural damping (ξ), fluid damping (γ) and Strouhal number (S). The results are presented in terms of: non-dimensional amplitudes of motion (A X/D and A Y/D), added mass coefficient (Ca) and periods of motion (T X and T Y). The phenomenological model is based on a time-domain, two degree-of-freedom structural model coupled with van der Pol wake oscillators. The governing equations are solved through fourth-order Runge-Kutta schemes. |
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Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) |
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Parametric analysis of a phenomenological model for vortex-induced motions of monocolumn platformsvortex-induced motions (VIM)phenomenological modelvan der Pol wake oscillatortwo degree-of-freedommonocolumn platformPhenomenological models are an important branch in VIV (Vortex-Induced Vibrations) and in VIM (Vortex-Induced Motions) studies to complement the results achieved via CFD (Computational Fluid Dynamics), as the latter tool is not presently a suitable tool for intense use in engineering analysis, due to high computer power requirements. A phenomenological model for evaluating the VIM on monocolumn platforms is presented and its results are compared with experimental ones. The main objective is to present a parametric analysis, focusing on the physical significance of the modifications in parameter values. The following parameters are varied: aspect ratio (L/D), structural damping (ξ), fluid damping (γ) and Strouhal number (S). The results are presented in terms of: non-dimensional amplitudes of motion (A X/D and A Y/D), added mass coefficient (Ca) and periods of motion (T X and T Y). The phenomenological model is based on a time-domain, two degree-of-freedom structural model coupled with van der Pol wake oscillators. The governing equations are solved through fourth-order Runge-Kutta schemes.Associação Brasileira de Engenharia e Ciências Mecânicas - ABCM2011-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-58782011000200004Journal of the Brazilian Society of Mechanical Sciences and Engineering v.33 n.2 2011reponame:Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online)instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)instacron:ABCM10.1590/S1678-58782011000200004info:eu-repo/semantics/openAccessRosetti,Guilherme F.Gonçalves,Rodolfo T.Fujarra,André L. C.Nishimoto,Kazuoeng2011-08-31T00:00:00Zoai:scielo:S1678-58782011000200004Revistahttps://www.scielo.br/j/jbsmse/https://old.scielo.br/oai/scielo-oai.php||abcm@abcm.org.br1806-36911678-5878opendoar:2011-08-31T00:00Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)false |
dc.title.none.fl_str_mv |
Parametric analysis of a phenomenological model for vortex-induced motions of monocolumn platforms |
title |
Parametric analysis of a phenomenological model for vortex-induced motions of monocolumn platforms |
spellingShingle |
Parametric analysis of a phenomenological model for vortex-induced motions of monocolumn platforms Rosetti,Guilherme F. vortex-induced motions (VIM) phenomenological model van der Pol wake oscillator two degree-of-freedom monocolumn platform |
title_short |
Parametric analysis of a phenomenological model for vortex-induced motions of monocolumn platforms |
title_full |
Parametric analysis of a phenomenological model for vortex-induced motions of monocolumn platforms |
title_fullStr |
Parametric analysis of a phenomenological model for vortex-induced motions of monocolumn platforms |
title_full_unstemmed |
Parametric analysis of a phenomenological model for vortex-induced motions of monocolumn platforms |
title_sort |
Parametric analysis of a phenomenological model for vortex-induced motions of monocolumn platforms |
author |
Rosetti,Guilherme F. |
author_facet |
Rosetti,Guilherme F. Gonçalves,Rodolfo T. Fujarra,André L. C. Nishimoto,Kazuo |
author_role |
author |
author2 |
Gonçalves,Rodolfo T. Fujarra,André L. C. Nishimoto,Kazuo |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Rosetti,Guilherme F. Gonçalves,Rodolfo T. Fujarra,André L. C. Nishimoto,Kazuo |
dc.subject.por.fl_str_mv |
vortex-induced motions (VIM) phenomenological model van der Pol wake oscillator two degree-of-freedom monocolumn platform |
topic |
vortex-induced motions (VIM) phenomenological model van der Pol wake oscillator two degree-of-freedom monocolumn platform |
description |
Phenomenological models are an important branch in VIV (Vortex-Induced Vibrations) and in VIM (Vortex-Induced Motions) studies to complement the results achieved via CFD (Computational Fluid Dynamics), as the latter tool is not presently a suitable tool for intense use in engineering analysis, due to high computer power requirements. A phenomenological model for evaluating the VIM on monocolumn platforms is presented and its results are compared with experimental ones. The main objective is to present a parametric analysis, focusing on the physical significance of the modifications in parameter values. The following parameters are varied: aspect ratio (L/D), structural damping (ξ), fluid damping (γ) and Strouhal number (S). The results are presented in terms of: non-dimensional amplitudes of motion (A X/D and A Y/D), added mass coefficient (Ca) and periods of motion (T X and T Y). The phenomenological model is based on a time-domain, two degree-of-freedom structural model coupled with van der Pol wake oscillators. The governing equations are solved through fourth-order Runge-Kutta schemes. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-58782011000200004 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-58782011000200004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1678-58782011000200004 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Engenharia e Ciências Mecânicas - ABCM |
publisher.none.fl_str_mv |
Associação Brasileira de Engenharia e Ciências Mecânicas - ABCM |
dc.source.none.fl_str_mv |
Journal of the Brazilian Society of Mechanical Sciences and Engineering v.33 n.2 2011 reponame:Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) instacron:ABCM |
instname_str |
Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) |
instacron_str |
ABCM |
institution |
ABCM |
reponame_str |
Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) |
collection |
Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) |
repository.mail.fl_str_mv |
||abcm@abcm.org.br |
_version_ |
1754734681883934720 |