An exact theory of three-dimensional fixed separation in unsteady flows

We develop a nonlinear theory for separation and attachment on no-slip boundaries of three-dimensional unsteady flows that have a steady mean component. In such flows, separation and attachment surfaces turn out to originate from fixed lines on the boundary, even though the surfaces themselves defor...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physics of fluids (1994) 2008-10, Vol.20 (10), p.107101-107101-22
Hauptverfasser: Surana, Amit, Jacobs, Gustaaf B., Grunberg, Oliver, Haller, George
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 107101-22
container_issue 10
container_start_page 107101
container_title Physics of fluids (1994)
container_volume 20
creator Surana, Amit
Jacobs, Gustaaf B.
Grunberg, Oliver
Haller, George
description We develop a nonlinear theory for separation and attachment on no-slip boundaries of three-dimensional unsteady flows that have a steady mean component. In such flows, separation and attachment surfaces turn out to originate from fixed lines on the boundary, even though the surfaces themselves deform in time. The exact separation geometry is not captured by instantaneous Eulerian fields associated with the velocity field, but can be determined from a weighted average of the wall-shear and wall-density fields. To illustrate our results, we locate separation surfaces and attachment surfaces in an unsteady model flow and in direct numerical simulations of a time-periodic lid-driven cavity.
doi_str_mv 10.1063/1.2988321
format Article
fullrecord <record><control><sourceid>scitation_cross</sourceid><recordid>TN_cdi_crossref_primary_10_1063_1_2988321</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>scitation_primary_10_1063_1_2988321An_exact_theory_of_t</sourcerecordid><originalsourceid>FETCH-LOGICAL-c384t-9bae2f7ab858163478a9bc14aa36ec6a23f985a30661c796d6f393d290b297213</originalsourceid><addsrcrecordid>eNqNkMFKAzEQhoMoWKsH3yAXDwpbk0ybTS5CEa1CwYuew2w2wch2d0lWbd_ebbfoSfE0P8M3P8xHyDlnE84kXPOJ0EqB4AdkxJnSWS6lPNzmnGVSAj8mJym9McZACzkii3lN3RptR7tX18QNbXyfonNZGVauTqGpsaI-rF1Jk2sxYtevaKjpe506h-WG-qr5TKfkyGOV3Nl-jsnL_d3z7UO2fFo83s6XmQU17TJdoBM-x0LNFJcwzRXqwvIpIkhnJQrwWs0QmJTc5lqW0oOGUmhWCJ0LDmNyOfTa2KQUnTdtDCuMG8OZ2Row3OwN9OzFwLaYLFY-Ym1D-j4QTOUgQPbczcAlG7rdf7-Xzmuz02UGXabxpusLrv5d8Bf80cQf0LSlhy9zgIwW</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>An exact theory of three-dimensional fixed separation in unsteady flows</title><source>AIP Journals Complete</source><source>AIP Digital Archive</source><source>Alma/SFX Local Collection</source><creator>Surana, Amit ; Jacobs, Gustaaf B. ; Grunberg, Oliver ; Haller, George</creator><creatorcontrib>Surana, Amit ; Jacobs, Gustaaf B. ; Grunberg, Oliver ; Haller, George</creatorcontrib><description>We develop a nonlinear theory for separation and attachment on no-slip boundaries of three-dimensional unsteady flows that have a steady mean component. In such flows, separation and attachment surfaces turn out to originate from fixed lines on the boundary, even though the surfaces themselves deform in time. The exact separation geometry is not captured by instantaneous Eulerian fields associated with the velocity field, but can be determined from a weighted average of the wall-shear and wall-density fields. To illustrate our results, we locate separation surfaces and attachment surfaces in an unsteady model flow and in direct numerical simulations of a time-periodic lid-driven cavity.</description><identifier>ISSN: 1070-6631</identifier><identifier>EISSN: 1089-7666</identifier><identifier>DOI: 10.1063/1.2988321</identifier><identifier>CODEN: PHFLE6</identifier><language>eng</language><publisher>Melville, NY: American Institute of Physics</publisher><subject>Exact sciences and technology ; Fluid dynamics ; Fundamental areas of phenomenology (including applications) ; Laminar flows ; Laminar flows in cavities ; Physics ; Rotational flow and vorticity ; Separated flows</subject><ispartof>Physics of fluids (1994), 2008-10, Vol.20 (10), p.107101-107101-22</ispartof><rights>American Institute of Physics</rights><rights>2008 American Institute of Physics</rights><rights>2009 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c384t-9bae2f7ab858163478a9bc14aa36ec6a23f985a30661c796d6f393d290b297213</citedby><cites>FETCH-LOGICAL-c384t-9bae2f7ab858163478a9bc14aa36ec6a23f985a30661c796d6f393d290b297213</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,790,1553,4497,27903,27904</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=20873236$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Surana, Amit</creatorcontrib><creatorcontrib>Jacobs, Gustaaf B.</creatorcontrib><creatorcontrib>Grunberg, Oliver</creatorcontrib><creatorcontrib>Haller, George</creatorcontrib><title>An exact theory of three-dimensional fixed separation in unsteady flows</title><title>Physics of fluids (1994)</title><description>We develop a nonlinear theory for separation and attachment on no-slip boundaries of three-dimensional unsteady flows that have a steady mean component. In such flows, separation and attachment surfaces turn out to originate from fixed lines on the boundary, even though the surfaces themselves deform in time. The exact separation geometry is not captured by instantaneous Eulerian fields associated with the velocity field, but can be determined from a weighted average of the wall-shear and wall-density fields. To illustrate our results, we locate separation surfaces and attachment surfaces in an unsteady model flow and in direct numerical simulations of a time-periodic lid-driven cavity.</description><subject>Exact sciences and technology</subject><subject>Fluid dynamics</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Laminar flows</subject><subject>Laminar flows in cavities</subject><subject>Physics</subject><subject>Rotational flow and vorticity</subject><subject>Separated flows</subject><issn>1070-6631</issn><issn>1089-7666</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNqNkMFKAzEQhoMoWKsH3yAXDwpbk0ybTS5CEa1CwYuew2w2wch2d0lWbd_ebbfoSfE0P8M3P8xHyDlnE84kXPOJ0EqB4AdkxJnSWS6lPNzmnGVSAj8mJym9McZACzkii3lN3RptR7tX18QNbXyfonNZGVauTqGpsaI-rF1Jk2sxYtevaKjpe506h-WG-qr5TKfkyGOV3Nl-jsnL_d3z7UO2fFo83s6XmQU17TJdoBM-x0LNFJcwzRXqwvIpIkhnJQrwWs0QmJTc5lqW0oOGUmhWCJ0LDmNyOfTa2KQUnTdtDCuMG8OZ2Row3OwN9OzFwLaYLFY-Ym1D-j4QTOUgQPbczcAlG7rdf7-Xzmuz02UGXabxpusLrv5d8Bf80cQf0LSlhy9zgIwW</recordid><startdate>20081001</startdate><enddate>20081001</enddate><creator>Surana, Amit</creator><creator>Jacobs, Gustaaf B.</creator><creator>Grunberg, Oliver</creator><creator>Haller, George</creator><general>American Institute of Physics</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20081001</creationdate><title>An exact theory of three-dimensional fixed separation in unsteady flows</title><author>Surana, Amit ; Jacobs, Gustaaf B. ; Grunberg, Oliver ; Haller, George</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c384t-9bae2f7ab858163478a9bc14aa36ec6a23f985a30661c796d6f393d290b297213</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Exact sciences and technology</topic><topic>Fluid dynamics</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>Laminar flows</topic><topic>Laminar flows in cavities</topic><topic>Physics</topic><topic>Rotational flow and vorticity</topic><topic>Separated flows</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Surana, Amit</creatorcontrib><creatorcontrib>Jacobs, Gustaaf B.</creatorcontrib><creatorcontrib>Grunberg, Oliver</creatorcontrib><creatorcontrib>Haller, George</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Physics of fluids (1994)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Surana, Amit</au><au>Jacobs, Gustaaf B.</au><au>Grunberg, Oliver</au><au>Haller, George</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An exact theory of three-dimensional fixed separation in unsteady flows</atitle><jtitle>Physics of fluids (1994)</jtitle><date>2008-10-01</date><risdate>2008</risdate><volume>20</volume><issue>10</issue><spage>107101</spage><epage>107101-22</epage><pages>107101-107101-22</pages><issn>1070-6631</issn><eissn>1089-7666</eissn><coden>PHFLE6</coden><abstract>We develop a nonlinear theory for separation and attachment on no-slip boundaries of three-dimensional unsteady flows that have a steady mean component. In such flows, separation and attachment surfaces turn out to originate from fixed lines on the boundary, even though the surfaces themselves deform in time. The exact separation geometry is not captured by instantaneous Eulerian fields associated with the velocity field, but can be determined from a weighted average of the wall-shear and wall-density fields. To illustrate our results, we locate separation surfaces and attachment surfaces in an unsteady model flow and in direct numerical simulations of a time-periodic lid-driven cavity.</abstract><cop>Melville, NY</cop><pub>American Institute of Physics</pub><doi>10.1063/1.2988321</doi><tpages>22</tpages></addata></record>
fulltext fulltext
identifier ISSN: 1070-6631
ispartof Physics of fluids (1994), 2008-10, Vol.20 (10), p.107101-107101-22
issn 1070-6631
1089-7666
language eng
recordid cdi_crossref_primary_10_1063_1_2988321
source AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection
subjects Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Laminar flows
Laminar flows in cavities
Physics
Rotational flow and vorticity
Separated flows
title An exact theory of three-dimensional fixed separation in unsteady flows
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-21T21%3A38%3A15IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-scitation_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=An%20exact%20theory%20of%20three-dimensional%20fixed%20separation%20in%20unsteady%20flows&rft.jtitle=Physics%20of%20fluids%20(1994)&rft.au=Surana,%20Amit&rft.date=2008-10-01&rft.volume=20&rft.issue=10&rft.spage=107101&rft.epage=107101-22&rft.pages=107101-107101-22&rft.issn=1070-6631&rft.eissn=1089-7666&rft.coden=PHFLE6&rft_id=info:doi/10.1063/1.2988321&rft_dat=%3Cscitation_cross%3Escitation_primary_10_1063_1_2988321An_exact_theory_of_t%3C/scitation_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true