Numerical Simulation of a Pitching Airfoil Under Dynamic Stall of Low Reynolds Number Flow
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of Aerospace Technology and Management (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462019000100343 |
Resumo: | ABSTRACT: In this research, viscous, unsteady and turbulent fluid flow is simulated numerically around a pitching NACA0012 airfoil in the dynamic stall area. The Navier-Stokes equations are discretized based on the finite volume method and are solved by the PIMPLE algorithm in the open source software, namely OpenFOAM. The SST k - ω model is used as the turbulence model for Low Reynolds Number flows in the order of 105. A homogenous dynamic mesh is used to reduce cell skewness of mesh to prevent non-physical oscillations in aerodynamic forces unlike previous studies. In this paper, the effects of Reynolds number, reduced frequency, oscillation amplitude and airfoil thickness on aerodynamic force coefficients and dynamic stall delay are investigated. These parameters have a significant impact on the maximum lift, drag, the ratio of aerodynamic forces and the location of dynamic stall. The most important parameters that affect the maximum lift to drag coefficient ratio and cause dynamic stall delaying are airfoil thickness and reduced frequency, respectively. |
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Journal of Aerospace Technology and Management (Online) |
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Numerical Simulation of a Pitching Airfoil Under Dynamic Stall of Low Reynolds Number FlowDynamic stallPitching motionUnsteady aerodynamicCFDNACA0012 airfoilABSTRACT: In this research, viscous, unsteady and turbulent fluid flow is simulated numerically around a pitching NACA0012 airfoil in the dynamic stall area. The Navier-Stokes equations are discretized based on the finite volume method and are solved by the PIMPLE algorithm in the open source software, namely OpenFOAM. The SST k - ω model is used as the turbulence model for Low Reynolds Number flows in the order of 105. A homogenous dynamic mesh is used to reduce cell skewness of mesh to prevent non-physical oscillations in aerodynamic forces unlike previous studies. In this paper, the effects of Reynolds number, reduced frequency, oscillation amplitude and airfoil thickness on aerodynamic force coefficients and dynamic stall delay are investigated. These parameters have a significant impact on the maximum lift, drag, the ratio of aerodynamic forces and the location of dynamic stall. The most important parameters that affect the maximum lift to drag coefficient ratio and cause dynamic stall delaying are airfoil thickness and reduced frequency, respectively.Departamento de Ciência e Tecnologia Aeroespacial2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462019000100343Journal of Aerospace Technology and Management v.11 2019reponame:Journal of Aerospace Technology and Management (Online)instname:Departamento de Ciência e Tecnologia Aeroespacial (DCTA)instacron:DCTA10.5028/jatm.v11.1076info:eu-repo/semantics/openAccessHonarmand,MojtabaDjavareshkian,Mohammad HassanFeshalami,Behzad ForouziEsmaeilifar,Esmaeileng2019-11-12T00:00:00Zoai:scielo:S2175-91462019000100343Revistahttp://www.jatm.com.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||secretary@jatm.com.br2175-91461984-9648opendoar:2019-11-12T00:00Journal of Aerospace Technology and Management (Online) - Departamento de Ciência e Tecnologia Aeroespacial (DCTA)false |
dc.title.none.fl_str_mv |
Numerical Simulation of a Pitching Airfoil Under Dynamic Stall of Low Reynolds Number Flow |
title |
Numerical Simulation of a Pitching Airfoil Under Dynamic Stall of Low Reynolds Number Flow |
spellingShingle |
Numerical Simulation of a Pitching Airfoil Under Dynamic Stall of Low Reynolds Number Flow Honarmand,Mojtaba Dynamic stall Pitching motion Unsteady aerodynamic CFD NACA0012 airfoil |
title_short |
Numerical Simulation of a Pitching Airfoil Under Dynamic Stall of Low Reynolds Number Flow |
title_full |
Numerical Simulation of a Pitching Airfoil Under Dynamic Stall of Low Reynolds Number Flow |
title_fullStr |
Numerical Simulation of a Pitching Airfoil Under Dynamic Stall of Low Reynolds Number Flow |
title_full_unstemmed |
Numerical Simulation of a Pitching Airfoil Under Dynamic Stall of Low Reynolds Number Flow |
title_sort |
Numerical Simulation of a Pitching Airfoil Under Dynamic Stall of Low Reynolds Number Flow |
author |
Honarmand,Mojtaba |
author_facet |
Honarmand,Mojtaba Djavareshkian,Mohammad Hassan Feshalami,Behzad Forouzi Esmaeilifar,Esmaeil |
author_role |
author |
author2 |
Djavareshkian,Mohammad Hassan Feshalami,Behzad Forouzi Esmaeilifar,Esmaeil |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Honarmand,Mojtaba Djavareshkian,Mohammad Hassan Feshalami,Behzad Forouzi Esmaeilifar,Esmaeil |
dc.subject.por.fl_str_mv |
Dynamic stall Pitching motion Unsteady aerodynamic CFD NACA0012 airfoil |
topic |
Dynamic stall Pitching motion Unsteady aerodynamic CFD NACA0012 airfoil |
description |
ABSTRACT: In this research, viscous, unsteady and turbulent fluid flow is simulated numerically around a pitching NACA0012 airfoil in the dynamic stall area. The Navier-Stokes equations are discretized based on the finite volume method and are solved by the PIMPLE algorithm in the open source software, namely OpenFOAM. The SST k - ω model is used as the turbulence model for Low Reynolds Number flows in the order of 105. A homogenous dynamic mesh is used to reduce cell skewness of mesh to prevent non-physical oscillations in aerodynamic forces unlike previous studies. In this paper, the effects of Reynolds number, reduced frequency, oscillation amplitude and airfoil thickness on aerodynamic force coefficients and dynamic stall delay are investigated. These parameters have a significant impact on the maximum lift, drag, the ratio of aerodynamic forces and the location of dynamic stall. The most important parameters that affect the maximum lift to drag coefficient ratio and cause dynamic stall delaying are airfoil thickness and reduced frequency, respectively. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 |
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=S2175-91462019000100343 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462019000100343 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.5028/jatm.v11.1076 |
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 |
Departamento de Ciência e Tecnologia Aeroespacial |
publisher.none.fl_str_mv |
Departamento de Ciência e Tecnologia Aeroespacial |
dc.source.none.fl_str_mv |
Journal of Aerospace Technology and Management v.11 2019 reponame:Journal of Aerospace Technology and Management (Online) instname:Departamento de Ciência e Tecnologia Aeroespacial (DCTA) instacron:DCTA |
instname_str |
Departamento de Ciência e Tecnologia Aeroespacial (DCTA) |
instacron_str |
DCTA |
institution |
DCTA |
reponame_str |
Journal of Aerospace Technology and Management (Online) |
collection |
Journal of Aerospace Technology and Management (Online) |
repository.name.fl_str_mv |
Journal of Aerospace Technology and Management (Online) - Departamento de Ciência e Tecnologia Aeroespacial (DCTA) |
repository.mail.fl_str_mv |
||secretary@jatm.com.br |
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1754732532074545152 |