Dynamics of an Internal Flowfield Driven by Two Hydrodynamic Instabilities

Hydrodynamic instabilities in a confined flow generated by air injection through porous walls separated by an emerging obstacle are experimentally characterized. Two different mechanisms of instabilities have been detected: a vortex shedding phenomenon back to the obstacle location and one developin...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:AIAA journal 2003-03, Vol.41 (3), p.424-435
Hauptverfasser: Vétel, Jérôme, Plourde, Frédéric, Doan-Kim, Son
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 435
container_issue 3
container_start_page 424
container_title AIAA journal
container_volume 41
creator Vétel, Jérôme
Plourde, Frédéric
Doan-Kim, Son
description Hydrodynamic instabilities in a confined flow generated by air injection through porous walls separated by an emerging obstacle are experimentally characterized. Two different mechanisms of instabilities have been detected: a vortex shedding phenomenon back to the obstacle location and one developing along the porous wall. The latter was found to provide most of the acoustic energy. Influence of an unbalanced mass flow rate between each side of the obstacle has been carried out over a wide range of mean velocities; an increase of the mass flow rate injected downstream of the obstacle implies resonance amplification by wall vortex shedding that strengthens the instabilities in the chamber. On the other hand, an increase in the mass flow rate upstream from the obstacle location favors vortex pairing and self-sustained oscillations, whereas acoustic wave generation by wall vortex impingement is weakened. [PUBLICATION ABSTRACT]
doi_str_mv 10.2514/2.1993
format Article
fullrecord <record><control><sourceid>proquest_pasca</sourceid><recordid>TN_cdi_pascalfrancis_primary_14583619</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>305748221</sourcerecordid><originalsourceid>FETCH-LOGICAL-a370t-9f316d2d31b5cc3786ab5c75eb18b8dde556019e3d4f6d1eeecd1d459aad4a3e3</originalsourceid><addsrcrecordid>eNpt0F1LwzAUBuAgCs6pv6EoijedTdP041I25yYDbyZ4F06bE8jI2pm0zv57WzoYqFdJyJM3nJeQaxpMQk6jx3BCs4ydkBHljPks5R-nZBQEAfVpxMNzcuHcpjuFSUpH5HXWlrDVhfMq5UHpLcsabQnGm5tqrzQa6c2s_sLSy1tvva-8RSttJYdHnXY15NroWqO7JGcKjMOrwzom7_Pn9XThr95eltOnlQ8sCWo_U4zGMpSM5rwoWJLG0G0SjjlN81RK5DwOaIZMRiqWFBELSWXEMwAZAUM2JvdD7s5Wnw26Wmy1K9AYKLFqnOgGi6M0iDt48wtuqqYfrjN9N2GYRMe0wlbOWVRiZ_UWbCtoIPo-RSj6Pjt4d0gDV4BRFspCu6OOeMpimnXudnCgAY4__kl7-E8Nt2InlVCNMTV-1-wH1dmNkg</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>215332274</pqid></control><display><type>article</type><title>Dynamics of an Internal Flowfield Driven by Two Hydrodynamic Instabilities</title><source>Alma/SFX Local Collection</source><creator>Vétel, Jérôme ; Plourde, Frédéric ; Doan-Kim, Son</creator><creatorcontrib>Vétel, Jérôme ; Plourde, Frédéric ; Doan-Kim, Son</creatorcontrib><description>Hydrodynamic instabilities in a confined flow generated by air injection through porous walls separated by an emerging obstacle are experimentally characterized. Two different mechanisms of instabilities have been detected: a vortex shedding phenomenon back to the obstacle location and one developing along the porous wall. The latter was found to provide most of the acoustic energy. Influence of an unbalanced mass flow rate between each side of the obstacle has been carried out over a wide range of mean velocities; an increase of the mass flow rate injected downstream of the obstacle implies resonance amplification by wall vortex shedding that strengthens the instabilities in the chamber. On the other hand, an increase in the mass flow rate upstream from the obstacle location favors vortex pairing and self-sustained oscillations, whereas acoustic wave generation by wall vortex impingement is weakened. [PUBLICATION ABSTRACT]</description><identifier>ISSN: 0001-1452</identifier><identifier>EISSN: 1533-385X</identifier><identifier>DOI: 10.2514/2.1993</identifier><identifier>CODEN: AIAJAH</identifier><language>eng</language><publisher>Reston, VA: American Institute of Aeronautics and Astronautics</publisher><subject>Acoustics ; Aerodynamics ; Exact sciences and technology ; Fluid dynamics ; Fundamental areas of phenomenology (including applications) ; Hydrodynamic stability ; Instability of shear flows ; Physics ; Rotational flow and vorticity ; Separated flows</subject><ispartof>AIAA journal, 2003-03, Vol.41 (3), p.424-435</ispartof><rights>2003 INIST-CNRS</rights><rights>Copyright American Institute of Aeronautics and Astronautics Mar 2003</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a370t-9f316d2d31b5cc3786ab5c75eb18b8dde556019e3d4f6d1eeecd1d459aad4a3e3</citedby><cites>FETCH-LOGICAL-a370t-9f316d2d31b5cc3786ab5c75eb18b8dde556019e3d4f6d1eeecd1d459aad4a3e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=14583619$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Vétel, Jérôme</creatorcontrib><creatorcontrib>Plourde, Frédéric</creatorcontrib><creatorcontrib>Doan-Kim, Son</creatorcontrib><title>Dynamics of an Internal Flowfield Driven by Two Hydrodynamic Instabilities</title><title>AIAA journal</title><description>Hydrodynamic instabilities in a confined flow generated by air injection through porous walls separated by an emerging obstacle are experimentally characterized. Two different mechanisms of instabilities have been detected: a vortex shedding phenomenon back to the obstacle location and one developing along the porous wall. The latter was found to provide most of the acoustic energy. Influence of an unbalanced mass flow rate between each side of the obstacle has been carried out over a wide range of mean velocities; an increase of the mass flow rate injected downstream of the obstacle implies resonance amplification by wall vortex shedding that strengthens the instabilities in the chamber. On the other hand, an increase in the mass flow rate upstream from the obstacle location favors vortex pairing and self-sustained oscillations, whereas acoustic wave generation by wall vortex impingement is weakened. [PUBLICATION ABSTRACT]</description><subject>Acoustics</subject><subject>Aerodynamics</subject><subject>Exact sciences and technology</subject><subject>Fluid dynamics</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Hydrodynamic stability</subject><subject>Instability of shear flows</subject><subject>Physics</subject><subject>Rotational flow and vorticity</subject><subject>Separated flows</subject><issn>0001-1452</issn><issn>1533-385X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNpt0F1LwzAUBuAgCs6pv6EoijedTdP041I25yYDbyZ4F06bE8jI2pm0zv57WzoYqFdJyJM3nJeQaxpMQk6jx3BCs4ydkBHljPks5R-nZBQEAfVpxMNzcuHcpjuFSUpH5HXWlrDVhfMq5UHpLcsabQnGm5tqrzQa6c2s_sLSy1tvva-8RSttJYdHnXY15NroWqO7JGcKjMOrwzom7_Pn9XThr95eltOnlQ8sCWo_U4zGMpSM5rwoWJLG0G0SjjlN81RK5DwOaIZMRiqWFBELSWXEMwAZAUM2JvdD7s5Wnw26Wmy1K9AYKLFqnOgGi6M0iDt48wtuqqYfrjN9N2GYRMe0wlbOWVRiZ_UWbCtoIPo-RSj6Pjt4d0gDV4BRFspCu6OOeMpimnXudnCgAY4__kl7-E8Nt2InlVCNMTV-1-wH1dmNkg</recordid><startdate>20030301</startdate><enddate>20030301</enddate><creator>Vétel, Jérôme</creator><creator>Plourde, Frédéric</creator><creator>Doan-Kim, Son</creator><general>American Institute of Aeronautics and Astronautics</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20030301</creationdate><title>Dynamics of an Internal Flowfield Driven by Two Hydrodynamic Instabilities</title><author>Vétel, Jérôme ; Plourde, Frédéric ; Doan-Kim, Son</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a370t-9f316d2d31b5cc3786ab5c75eb18b8dde556019e3d4f6d1eeecd1d459aad4a3e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Acoustics</topic><topic>Aerodynamics</topic><topic>Exact sciences and technology</topic><topic>Fluid dynamics</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>Hydrodynamic stability</topic><topic>Instability of shear flows</topic><topic>Physics</topic><topic>Rotational flow and vorticity</topic><topic>Separated flows</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Vétel, Jérôme</creatorcontrib><creatorcontrib>Plourde, Frédéric</creatorcontrib><creatorcontrib>Doan-Kim, Son</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Mechanical &amp; Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>AIAA journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Vétel, Jérôme</au><au>Plourde, Frédéric</au><au>Doan-Kim, Son</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dynamics of an Internal Flowfield Driven by Two Hydrodynamic Instabilities</atitle><jtitle>AIAA journal</jtitle><date>2003-03-01</date><risdate>2003</risdate><volume>41</volume><issue>3</issue><spage>424</spage><epage>435</epage><pages>424-435</pages><issn>0001-1452</issn><eissn>1533-385X</eissn><coden>AIAJAH</coden><abstract>Hydrodynamic instabilities in a confined flow generated by air injection through porous walls separated by an emerging obstacle are experimentally characterized. Two different mechanisms of instabilities have been detected: a vortex shedding phenomenon back to the obstacle location and one developing along the porous wall. The latter was found to provide most of the acoustic energy. Influence of an unbalanced mass flow rate between each side of the obstacle has been carried out over a wide range of mean velocities; an increase of the mass flow rate injected downstream of the obstacle implies resonance amplification by wall vortex shedding that strengthens the instabilities in the chamber. On the other hand, an increase in the mass flow rate upstream from the obstacle location favors vortex pairing and self-sustained oscillations, whereas acoustic wave generation by wall vortex impingement is weakened. [PUBLICATION ABSTRACT]</abstract><cop>Reston, VA</cop><pub>American Institute of Aeronautics and Astronautics</pub><doi>10.2514/2.1993</doi><tpages>12</tpages></addata></record>
fulltext fulltext
identifier ISSN: 0001-1452
ispartof AIAA journal, 2003-03, Vol.41 (3), p.424-435
issn 0001-1452
1533-385X
language eng
recordid cdi_pascalfrancis_primary_14583619
source Alma/SFX Local Collection
subjects Acoustics
Aerodynamics
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Hydrodynamic stability
Instability of shear flows
Physics
Rotational flow and vorticity
Separated flows
title Dynamics of an Internal Flowfield Driven by Two Hydrodynamic Instabilities
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-24T06%3A35%3A22IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_pasca&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Dynamics%20of%20an%20Internal%20Flowfield%20Driven%20by%20Two%20Hydrodynamic%20Instabilities&rft.jtitle=AIAA%20journal&rft.au=V%C3%A9tel,%20J%C3%A9r%C3%B4me&rft.date=2003-03-01&rft.volume=41&rft.issue=3&rft.spage=424&rft.epage=435&rft.pages=424-435&rft.issn=0001-1452&rft.eissn=1533-385X&rft.coden=AIAJAH&rft_id=info:doi/10.2514/2.1993&rft_dat=%3Cproquest_pasca%3E305748221%3C/proquest_pasca%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=215332274&rft_id=info:pmid/&rfr_iscdi=true