On the unsteady aerodynamics of flapping wings under dynamic hovering kinematics

Hummingbirds and insects achieve outstanding flight performance by adapting their flapping motion to the flight requirements. Their wing kinematics can change from smooth flapping to highly dynamic waveforms, generating unsteady aerodynamic phenomena such as leading-edge vortices (LEV), rotational c...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physics of fluids (1994) 2024-08, Vol.36 (8)
Hauptverfasser: Poletti, Romain, Calado, Andre, Koloszar, Lilla K., Degroote, Joris, Mendez, Miguel A.
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue 8
container_start_page
container_title Physics of fluids (1994)
container_volume 36
creator Poletti, Romain
Calado, Andre
Koloszar, Lilla K.
Degroote, Joris
Mendez, Miguel A.
description Hummingbirds and insects achieve outstanding flight performance by adapting their flapping motion to the flight requirements. Their wing kinematics can change from smooth flapping to highly dynamic waveforms, generating unsteady aerodynamic phenomena such as leading-edge vortices (LEV), rotational circulation, wing wake capture, and added mass. This article uncovers the interactions of these mechanisms in the case of a rigid semi-elliptical wing undergoing aggressive kinematics in the hovering regime at Re∼O(103). The flapping kinematics were parametrized using smoothed steps and triangular functions and the flow dynamics were simulated by combining the overset method with large eddy simulations. The analysis of the results identifies an initial acceleration phase and a cruising phase. During the former, the flow is mostly irrotational and governed by the added mass effect. The added mass was shown to be responsible for a lift first peak due to the strong flapping acceleration. The dynamic pitching and the wing wake interaction generate a second lift peak due to a downwash flow and a vortex system on the proximal and distal parts of the wing's pressure side. Conversely, aerodynamic forces in the cruising phase are mainly governed by the growth and the establishment of the LEV. Finally, the leading flow structures in each phase and their impact on the aerodynamic forces were isolated using the extended proper orthogonal decomposition.
doi_str_mv 10.1063/5.0215531
format Article
fullrecord <record><control><sourceid>proquest_scita</sourceid><recordid>TN_cdi_proquest_journals_3089650237</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>3089650237</sourcerecordid><originalsourceid>FETCH-LOGICAL-c182t-af8308a7ce871a8c1d634f2fbeacd4ffb8cf75fce00ceb50eb3687c219a1368f3</originalsourceid><addsrcrecordid>eNp9kE1LAzEQhoMoWKsH_0HAk8LWyab52KMUv6BQD3oO2ezEbm03a7JV-u9Nac9eZl6YZ95hXkKuGUwYSH4vJlAyITg7ISMGuiqUlPJ0rxUUUnJ2Ti5SWgEAr0o5Im-Ljg5LpNsuDWibHbUYQ7Pr7KZ1iQZP_dr2fdt90t9cUuYajPQI0GX4wbgffrUdbuyQdy7JmbfrhFfHPiYfT4_vs5divnh-nT3MC8d0ORTWaw7aKodaMasdaySf-tLXaF0z9b7WzivhHQI4rAVgzaVWrmSVZVl5PiY3B98-hu8tpsGswjZ2-aTJxpUUUHKVqdsD5WJIKaI3fWw3Nu4MA7MPzAhzDCyzdwc2uXbIv4TuH_gPuCpr3Q</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>3089650237</pqid></control><display><type>article</type><title>On the unsteady aerodynamics of flapping wings under dynamic hovering kinematics</title><source>AIP Journals Complete</source><creator>Poletti, Romain ; Calado, Andre ; Koloszar, Lilla K. ; Degroote, Joris ; Mendez, Miguel A.</creator><creatorcontrib>Poletti, Romain ; Calado, Andre ; Koloszar, Lilla K. ; Degroote, Joris ; Mendez, Miguel A.</creatorcontrib><description>Hummingbirds and insects achieve outstanding flight performance by adapting their flapping motion to the flight requirements. Their wing kinematics can change from smooth flapping to highly dynamic waveforms, generating unsteady aerodynamic phenomena such as leading-edge vortices (LEV), rotational circulation, wing wake capture, and added mass. This article uncovers the interactions of these mechanisms in the case of a rigid semi-elliptical wing undergoing aggressive kinematics in the hovering regime at Re∼O(103). The flapping kinematics were parametrized using smoothed steps and triangular functions and the flow dynamics were simulated by combining the overset method with large eddy simulations. The analysis of the results identifies an initial acceleration phase and a cruising phase. During the former, the flow is mostly irrotational and governed by the added mass effect. The added mass was shown to be responsible for a lift first peak due to the strong flapping acceleration. The dynamic pitching and the wing wake interaction generate a second lift peak due to a downwash flow and a vortex system on the proximal and distal parts of the wing's pressure side. Conversely, aerodynamic forces in the cruising phase are mainly governed by the growth and the establishment of the LEV. Finally, the leading flow structures in each phase and their impact on the aerodynamic forces were isolated using the extended proper orthogonal decomposition.</description><identifier>ISSN: 1070-6631</identifier><identifier>EISSN: 1089-7666</identifier><identifier>DOI: 10.1063/5.0215531</identifier><identifier>CODEN: PHFLE6</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Added mass effects ; Aerodynamic forces ; Dynamic structural analysis ; Flapping wings ; Flight characteristics ; Fluid flow ; Hovering ; Hovering flight ; Insects ; Kinematics ; Large eddy simulation ; Lift ; Pressure effects ; Proper Orthogonal Decomposition ; Unsteady aerodynamics ; Waveforms</subject><ispartof>Physics of fluids (1994), 2024-08, Vol.36 (8)</ispartof><rights>Author(s)</rights><rights>2024 Author(s). Published under an exclusive license by AIP Publishing.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c182t-af8308a7ce871a8c1d634f2fbeacd4ffb8cf75fce00ceb50eb3687c219a1368f3</cites><orcidid>0000-0003-3566-6956 ; 0000-0002-9228-4746 ; 0000-0002-1115-2187 ; 0000-0002-5564-3834 ; 0000-0003-4225-1791</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,790,4497,27903,27904</link.rule.ids></links><search><creatorcontrib>Poletti, Romain</creatorcontrib><creatorcontrib>Calado, Andre</creatorcontrib><creatorcontrib>Koloszar, Lilla K.</creatorcontrib><creatorcontrib>Degroote, Joris</creatorcontrib><creatorcontrib>Mendez, Miguel A.</creatorcontrib><title>On the unsteady aerodynamics of flapping wings under dynamic hovering kinematics</title><title>Physics of fluids (1994)</title><description>Hummingbirds and insects achieve outstanding flight performance by adapting their flapping motion to the flight requirements. Their wing kinematics can change from smooth flapping to highly dynamic waveforms, generating unsteady aerodynamic phenomena such as leading-edge vortices (LEV), rotational circulation, wing wake capture, and added mass. This article uncovers the interactions of these mechanisms in the case of a rigid semi-elliptical wing undergoing aggressive kinematics in the hovering regime at Re∼O(103). The flapping kinematics were parametrized using smoothed steps and triangular functions and the flow dynamics were simulated by combining the overset method with large eddy simulations. The analysis of the results identifies an initial acceleration phase and a cruising phase. During the former, the flow is mostly irrotational and governed by the added mass effect. The added mass was shown to be responsible for a lift first peak due to the strong flapping acceleration. The dynamic pitching and the wing wake interaction generate a second lift peak due to a downwash flow and a vortex system on the proximal and distal parts of the wing's pressure side. Conversely, aerodynamic forces in the cruising phase are mainly governed by the growth and the establishment of the LEV. Finally, the leading flow structures in each phase and their impact on the aerodynamic forces were isolated using the extended proper orthogonal decomposition.</description><subject>Added mass effects</subject><subject>Aerodynamic forces</subject><subject>Dynamic structural analysis</subject><subject>Flapping wings</subject><subject>Flight characteristics</subject><subject>Fluid flow</subject><subject>Hovering</subject><subject>Hovering flight</subject><subject>Insects</subject><subject>Kinematics</subject><subject>Large eddy simulation</subject><subject>Lift</subject><subject>Pressure effects</subject><subject>Proper Orthogonal Decomposition</subject><subject>Unsteady aerodynamics</subject><subject>Waveforms</subject><issn>1070-6631</issn><issn>1089-7666</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LAzEQhoMoWKsH_0HAk8LWyab52KMUv6BQD3oO2ezEbm03a7JV-u9Nac9eZl6YZ95hXkKuGUwYSH4vJlAyITg7ISMGuiqUlPJ0rxUUUnJ2Ti5SWgEAr0o5Im-Ljg5LpNsuDWibHbUYQ7Pr7KZ1iQZP_dr2fdt90t9cUuYajPQI0GX4wbgffrUdbuyQdy7JmbfrhFfHPiYfT4_vs5divnh-nT3MC8d0ORTWaw7aKodaMasdaySf-tLXaF0z9b7WzivhHQI4rAVgzaVWrmSVZVl5PiY3B98-hu8tpsGswjZ2-aTJxpUUUHKVqdsD5WJIKaI3fWw3Nu4MA7MPzAhzDCyzdwc2uXbIv4TuH_gPuCpr3Q</recordid><startdate>202408</startdate><enddate>202408</enddate><creator>Poletti, Romain</creator><creator>Calado, Andre</creator><creator>Koloszar, Lilla K.</creator><creator>Degroote, Joris</creator><creator>Mendez, Miguel A.</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0003-3566-6956</orcidid><orcidid>https://orcid.org/0000-0002-9228-4746</orcidid><orcidid>https://orcid.org/0000-0002-1115-2187</orcidid><orcidid>https://orcid.org/0000-0002-5564-3834</orcidid><orcidid>https://orcid.org/0000-0003-4225-1791</orcidid></search><sort><creationdate>202408</creationdate><title>On the unsteady aerodynamics of flapping wings under dynamic hovering kinematics</title><author>Poletti, Romain ; Calado, Andre ; Koloszar, Lilla K. ; Degroote, Joris ; Mendez, Miguel A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c182t-af8308a7ce871a8c1d634f2fbeacd4ffb8cf75fce00ceb50eb3687c219a1368f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Added mass effects</topic><topic>Aerodynamic forces</topic><topic>Dynamic structural analysis</topic><topic>Flapping wings</topic><topic>Flight characteristics</topic><topic>Fluid flow</topic><topic>Hovering</topic><topic>Hovering flight</topic><topic>Insects</topic><topic>Kinematics</topic><topic>Large eddy simulation</topic><topic>Lift</topic><topic>Pressure effects</topic><topic>Proper Orthogonal Decomposition</topic><topic>Unsteady aerodynamics</topic><topic>Waveforms</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Poletti, Romain</creatorcontrib><creatorcontrib>Calado, Andre</creatorcontrib><creatorcontrib>Koloszar, Lilla K.</creatorcontrib><creatorcontrib>Degroote, Joris</creatorcontrib><creatorcontrib>Mendez, Miguel A.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physics of fluids (1994)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Poletti, Romain</au><au>Calado, Andre</au><au>Koloszar, Lilla K.</au><au>Degroote, Joris</au><au>Mendez, Miguel A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>On the unsteady aerodynamics of flapping wings under dynamic hovering kinematics</atitle><jtitle>Physics of fluids (1994)</jtitle><date>2024-08</date><risdate>2024</risdate><volume>36</volume><issue>8</issue><issn>1070-6631</issn><eissn>1089-7666</eissn><coden>PHFLE6</coden><abstract>Hummingbirds and insects achieve outstanding flight performance by adapting their flapping motion to the flight requirements. Their wing kinematics can change from smooth flapping to highly dynamic waveforms, generating unsteady aerodynamic phenomena such as leading-edge vortices (LEV), rotational circulation, wing wake capture, and added mass. This article uncovers the interactions of these mechanisms in the case of a rigid semi-elliptical wing undergoing aggressive kinematics in the hovering regime at Re∼O(103). The flapping kinematics were parametrized using smoothed steps and triangular functions and the flow dynamics were simulated by combining the overset method with large eddy simulations. The analysis of the results identifies an initial acceleration phase and a cruising phase. During the former, the flow is mostly irrotational and governed by the added mass effect. The added mass was shown to be responsible for a lift first peak due to the strong flapping acceleration. The dynamic pitching and the wing wake interaction generate a second lift peak due to a downwash flow and a vortex system on the proximal and distal parts of the wing's pressure side. Conversely, aerodynamic forces in the cruising phase are mainly governed by the growth and the establishment of the LEV. Finally, the leading flow structures in each phase and their impact on the aerodynamic forces were isolated using the extended proper orthogonal decomposition.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/5.0215531</doi><tpages>19</tpages><orcidid>https://orcid.org/0000-0003-3566-6956</orcidid><orcidid>https://orcid.org/0000-0002-9228-4746</orcidid><orcidid>https://orcid.org/0000-0002-1115-2187</orcidid><orcidid>https://orcid.org/0000-0002-5564-3834</orcidid><orcidid>https://orcid.org/0000-0003-4225-1791</orcidid></addata></record>
fulltext fulltext
identifier ISSN: 1070-6631
ispartof Physics of fluids (1994), 2024-08, Vol.36 (8)
issn 1070-6631
1089-7666
language eng
recordid cdi_proquest_journals_3089650237
source AIP Journals Complete
subjects Added mass effects
Aerodynamic forces
Dynamic structural analysis
Flapping wings
Flight characteristics
Fluid flow
Hovering
Hovering flight
Insects
Kinematics
Large eddy simulation
Lift
Pressure effects
Proper Orthogonal Decomposition
Unsteady aerodynamics
Waveforms
title On the unsteady aerodynamics of flapping wings under dynamic hovering kinematics
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-25T01%3A35%3A36IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_scita&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=On%20the%20unsteady%20aerodynamics%20of%20flapping%20wings%20under%20dynamic%20hovering%20kinematics&rft.jtitle=Physics%20of%20fluids%20(1994)&rft.au=Poletti,%20Romain&rft.date=2024-08&rft.volume=36&rft.issue=8&rft.issn=1070-6631&rft.eissn=1089-7666&rft.coden=PHFLE6&rft_id=info:doi/10.1063/5.0215531&rft_dat=%3Cproquest_scita%3E3089650237%3C/proquest_scita%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=3089650237&rft_id=info:pmid/&rfr_iscdi=true