Horizontal jets and vortex dipoles in a stratified fluid
Identifieur interne : 001279 ( Istex/Corpus ); précédent : 001278; suivant : 001280Horizontal jets and vortex dipoles in a stratified fluid
Auteurs : S. I. Voropayev ; Ya. D. Afanasyev ; I. A. FilippovSource :
- Journal of Fluid Mechanics [ 0022-1120 ] ; 1991-06.
Abstract
When a horizontal force is applied locally to some volume of a viscous densitystratified fluid, flows with high concentration of vertically oriented vorticity (vortex dipoles) are generated. The processes of generation and evolution with time of these unsteady flows in a stratified fluid are studied. A convenient way to produce and study these flows in the laboratory is to use a submerged horizontal jet as a ‘point’ source of momentum. The main governing parameter (the ‘force’) is easily controlled in this case. Two regimes were studied: starting jets with dipolar vortex fronts (the force acts continuously) and impulsive vortex dipoles (the force acts for a short period of time). A conductivity microprobe, aluminium powder, shadowgraph, thymol-blue and other techniques have been used to measure the velocity and density distributions in the flows. It is found that in both regimes the flows are self-similar: the lengthscale of the flows increases with time as t ½ for starting jets and as t 1/3 for vortex dipoles. Detailed information about the generation mechanism, kinematics and dynamics of the flows is obtained. On the basis of similarity principles a theoretical explanation of the experimental results is given. The theory is in good agreement with the results obtained.
Url:
DOI: 10.1017/S0022112091000241
Links to Exploration step
ISTEX:1DCD11B39FD1E60E40C096E9FF5BE418413DD942Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Horizontal jets and vortex dipoles in a stratified fluid</title><author><name sortKey="Voropayev, S I" sort="Voropayev, S I" uniqKey="Voropayev S" first="S. I." last="Voropayev">S. I. Voropayev</name><affiliation><mods:affiliation>Institute of Oceanology, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</mods:affiliation></affiliation></author><author><name sortKey="Afanasyev, Ya D" sort="Afanasyev, Ya D" uniqKey="Afanasyev Y" first="Ya. D." last="Afanasyev">Ya. D. Afanasyev</name><affiliation><mods:affiliation>Institute of Oceanology, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</mods:affiliation></affiliation></author><author><name sortKey="Filippov, I A" sort="Filippov, I A" uniqKey="Filippov I" first="I. A." last="Filippov">I. A. Filippov</name><affiliation><mods:affiliation>Institute of Oceanology, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:1DCD11B39FD1E60E40C096E9FF5BE418413DD942</idno><date when="2006" year="2006">2006</date><idno type="doi">10.1017/S0022112091000241</idno><idno type="url">https://api.istex.fr/ark:/67375/6GQ-RLWXB2SP-J/fulltext.pdf</idno><idno type="wicri:Area/Istex/Corpus">001279</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001279</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Horizontal jets and vortex dipoles in a stratified fluid</title><author><name sortKey="Voropayev, S I" sort="Voropayev, S I" uniqKey="Voropayev S" first="S. I." last="Voropayev">S. I. Voropayev</name><affiliation><mods:affiliation>Institute of Oceanology, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</mods:affiliation></affiliation></author><author><name sortKey="Afanasyev, Ya D" sort="Afanasyev, Ya D" uniqKey="Afanasyev Y" first="Ya. D." last="Afanasyev">Ya. D. Afanasyev</name><affiliation><mods:affiliation>Institute of Oceanology, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</mods:affiliation></affiliation></author><author><name sortKey="Filippov, I A" sort="Filippov, I A" uniqKey="Filippov I" first="I. A." last="Filippov">I. A. Filippov</name><affiliation><mods:affiliation>Institute of Oceanology, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Fluid Mechanics</title><idno type="ISSN">0022-1120</idno><idno type="eISSN">1469-7645</idno><imprint><publisher>Cambridge University Press</publisher><pubPlace>Cambridge, UK</pubPlace><date type="published" when="1991-06">1991-06</date><biblScope unit="volume">227</biblScope><biblScope unit="page" from="543">543</biblScope><biblScope unit="page" to="566">566</biblScope></imprint><idno type="ISSN">0022-1120</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0022-1120</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">When a horizontal force is applied locally to some volume of a viscous densitystratified fluid, flows with high concentration of vertically oriented vorticity (vortex dipoles) are generated. The processes of generation and evolution with time of these unsteady flows in a stratified fluid are studied. A convenient way to produce and study these flows in the laboratory is to use a submerged horizontal jet as a ‘point’ source of momentum. The main governing parameter (the ‘force’) is easily controlled in this case. Two regimes were studied: starting jets with dipolar vortex fronts (the force acts continuously) and impulsive vortex dipoles (the force acts for a short period of time). A conductivity microprobe, aluminium powder, shadowgraph, thymol-blue and other techniques have been used to measure the velocity and density distributions in the flows. It is found that in both regimes the flows are self-similar: the lengthscale of the flows increases with time as t ½ for starting jets and as t 1/3 for vortex dipoles. Detailed information about the generation mechanism, kinematics and dynamics of the flows is obtained. On the basis of similarity principles a theoretical explanation of the experimental results is given. The theory is in good agreement with the results obtained.</div></front></TEI><istex><corpusName>cambridge</corpusName><author><json:item><name>S. I. Voropayev</name><affiliations><json:string>Institute of Oceanology, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</json:string></affiliations></json:item><json:item><name>Ya. D. Afanasyev</name><affiliations><json:string>Institute of Oceanology, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</json:string></affiliations></json:item><json:item><name>I. A. Filippov</name><affiliations><json:string>Institute of Oceanology, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</json:string></affiliations></json:item></author><arkIstex>ark:/67375/6GQ-RLWXB2SP-J</arkIstex><language><json:string>eng</json:string></language><originalGenre><json:string>research-article</json:string></originalGenre><abstract>When a horizontal force is applied locally to some volume of a viscous densitystratified fluid, flows with high concentration of vertically oriented vorticity (vortex dipoles) are generated. The processes of generation and evolution with time of these unsteady flows in a stratified fluid are studied. A convenient way to produce and study these flows in the laboratory is to use a submerged horizontal jet as a ‘point’ source of momentum. The main governing parameter (the ‘force’) is easily controlled in this case. Two regimes were studied: starting jets with dipolar vortex fronts (the force acts continuously) and impulsive vortex dipoles (the force acts for a short period of time). A conductivity microprobe, aluminium powder, shadowgraph, thymol-blue and other techniques have been used to measure the velocity and density distributions in the flows. It is found that in both regimes the flows are self-similar: the lengthscale of the flows increases with time as t ½ for starting jets and as t 1/3 for vortex dipoles. Detailed information about the generation mechanism, kinematics and dynamics of the flows is obtained. On the basis of similarity principles a theoretical explanation of the experimental results is given. The theory is in good agreement with the results obtained.</abstract><qualityIndicators><score>9.436</score><pdfWordCount>7338</pdfWordCount><pdfCharCount>38129</pdfCharCount><pdfVersion>1.4</pdfVersion><pdfPageCount>24</pdfPageCount><pdfPageSize>486 x 702 pts</pdfPageSize><refBibsNative>false</refBibsNative><abstractWordCount>203</abstractWordCount><abstractCharCount>1290</abstractCharCount><keywordCount>0</keywordCount></qualityIndicators><title>Horizontal jets and vortex dipoles in a stratified fluid</title><pii><json:string>S0022112091000241</json:string></pii><genre><json:string>research-article</json:string></genre><host><title>Journal of Fluid Mechanics</title><language><json:string>unknown</json:string></language><issn><json:string>0022-1120</json:string></issn><eissn><json:string>1469-7645</json:string></eissn><publisherId><json:string>FLM</json:string></publisherId><volume>227</volume><pages><first>543</first><last>566</last><total>24</total></pages><genre><json:string>journal</json:string></genre></host><ark><json:string>ark:/67375/6GQ-RLWXB2SP-J</json:string></ark><categories><inist><json:string>1 - sciences appliquees, technologies et medecines</json:string><json:string>2 - sciences exactes et technologie</json:string><json:string>3 - terre, ocean, espace</json:string><json:string>4 - geophysique externe</json:string></inist></categories><publicationDate>1991</publicationDate><copyrightDate>2006</copyrightDate><doi><json:string>10.1017/S0022112091000241</json:string></doi><id>1DCD11B39FD1E60E40C096E9FF5BE418413DD942</id><score>1</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/ark:/67375/6GQ-RLWXB2SP-J/fulltext.pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/ark:/67375/6GQ-RLWXB2SP-J/bundle.zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/ark:/67375/6GQ-RLWXB2SP-J/fulltext.tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main" xml:lang="en">Horizontal jets and vortex dipoles in a stratified fluid</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher scheme="https://scientific-publisher.data.istex.fr">Cambridge University Press</publisher><pubPlace>Cambridge, UK</pubPlace><availability><licence><p>© 1991 Cambridge University Press</p></licence><p scheme="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-G3RCRD03-V">cambridge</p></availability><date>2006-04-26</date></publicationStmt><notesStmt><note type="research-article" scheme="https://content-type.data.istex.fr/ark:/67375/XTP-1JC4F85T-7">research-article</note><note type="journal" scheme="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</note></notesStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">Horizontal jets and vortex dipoles in a stratified fluid</title><author xml:id="author-0000"><persName><forename type="first">S. I.</forename><surname>Voropayev</surname></persName><affiliation>Institute of Oceanology, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</affiliation></author><author xml:id="author-0001"><persName><forename type="first">Ya. D.</forename><surname>Afanasyev</surname></persName><affiliation>Institute of Oceanology, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</affiliation></author><author xml:id="author-0002"><persName><forename type="first">I. A.</forename><surname>Filippov</surname></persName><affiliation>Institute of Oceanology, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</affiliation></author><idno type="istex">1DCD11B39FD1E60E40C096E9FF5BE418413DD942</idno><idno type="ark">ark:/67375/6GQ-RLWXB2SP-J</idno><idno type="DOI">10.1017/S0022112091000241</idno><idno type="PII">S0022112091000241</idno></analytic><monogr><title level="j">Journal of Fluid Mechanics</title><idno type="pISSN">0022-1120</idno><idno type="eISSN">1469-7645</idno><idno type="publisher-id">FLM</idno><imprint><publisher>Cambridge University Press</publisher><pubPlace>Cambridge, UK</pubPlace><date type="published" when="1991-06"></date><biblScope unit="volume">227</biblScope><biblScope unit="page" from="543">543</biblScope><biblScope unit="page" to="566">566</biblScope></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>2006-04-26</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en" style="normal"><p>When a horizontal force is applied locally to some volume of a viscous densitystratified fluid, flows with high concentration of vertically oriented vorticity (vortex dipoles) are generated. The processes of generation and evolution with time of these unsteady flows in a stratified fluid are studied. A convenient way to produce and study these flows in the laboratory is to use a submerged horizontal jet as a ‘point’ source of momentum. The main governing parameter (the ‘force’) is easily controlled in this case. Two regimes were studied: starting jets with dipolar vortex fronts (the force acts continuously) and impulsive vortex dipoles (the force acts for a short period of time). A conductivity microprobe, aluminium powder, shadowgraph, thymol-blue and other techniques have been used to measure the velocity and density distributions in the flows. It is found that in both regimes the flows are self-similar: the lengthscale of the flows increases with time as t ½ for starting jets and as t 1/3 for vortex dipoles. Detailed information about the generation mechanism, kinematics and dynamics of the flows is obtained. On the basis of similarity principles a theoretical explanation of the experimental results is given. The theory is in good agreement with the results obtained.</p></abstract></profileDesc><revisionDesc><change when="2006-04-26">Created</change><change when="1991-06">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/ark:/67375/6GQ-RLWXB2SP-J/fulltext.txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="corpus cambridge not found" wicri:toSee="no header"><istex:xmlDeclaration>version="1.0" encoding="UTF-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.0 20120330//EN" URI="journalpublishing1.dtd" name="istex:docType"></istex:docType><istex:document><article dtd-version="1.0" article-type="research-article" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">FLM</journal-id><journal-title-group><journal-title>Journal of Fluid Mechanics</journal-title><abbrev-journal-title>J. Fluid Mech.</abbrev-journal-title></journal-title-group><issn pub-type="epub">1469-7645</issn><issn pub-type="ppub">0022-1120</issn><publisher><publisher-name>Cambridge University Press</publisher-name><publisher-loc>Cambridge, UK</publisher-loc></publisher></journal-meta><article-meta><article-id pub-id-type="pii">S0022112091000241</article-id><article-id pub-id-type="doi">10.1017/S0022112091000241</article-id><title-group><article-title>Horizontal jets and vortex dipoles in a stratified fluid</article-title></title-group><contrib-group><contrib><name><surname>Voropayev </surname><given-names>S. I. </given-names></name><aff><institution>Institute of Oceanology</institution>, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</aff></contrib><contrib><name><surname>Afanasyev </surname><given-names>Ya. D. </given-names></name><aff><institution>Institute of Oceanology</institution>, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</aff></contrib><contrib><name><surname>Filippov </surname><given-names>I. A. </given-names></name><aff><institution>Institute of Oceanology</institution>, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</aff></contrib></contrib-group><pub-date pub-type="epub"><day>26</day><month>4</month><year>2006</year></pub-date><pub-date pub-type="ppub"><month>6</month><year>1991</year></pub-date><volume>227</volume><fpage>543</fpage><lpage>566</lpage><history><date date-type="received"><day>23</day><month>8</month><year>1988</year></date><date date-type="rev-recd"><day>4</day><month>12</month><year>1990</year></date></history><permissions><copyright-statement>© 1991 Cambridge University Press</copyright-statement></permissions><abstract abstract-type="normal"><p>When a horizontal force is applied locally to some volume of a viscous densitystratified fluid, flows with high concentration of vertically oriented vorticity (vortex dipoles) are generated. The processes of generation and evolution with time of these unsteady flows in a stratified fluid are studied. A convenient way to produce and study these flows in the laboratory is to use a submerged horizontal jet as a ‘point’ source of momentum. The main governing parameter (the ‘force’) is easily controlled in this case. Two regimes were studied: starting jets with dipolar vortex fronts (the force acts continuously) and impulsive vortex dipoles (the force acts for a short period of time). A conductivity microprobe, aluminium powder, shadowgraph, thymol-blue and other techniques have been used to measure the velocity and density distributions in the flows. It is found that in both regimes the flows are self-similar: the lengthscale of the flows increases with time as <italic>t</italic><sup>½</sup> for starting jets and as <italic>t</italic><sup>1/3</sup> for vortex dipoles. Detailed information about the generation mechanism, kinematics and dynamics of the flows is obtained. On the basis of similarity principles a theoretical explanation of the experimental results is given. The theory is in good agreement with the results obtained.</p></abstract><counts><page-count count="24"></page-count></counts><custom-meta-group><custom-meta><meta-name>pdf</meta-name><meta-value>S0022112091000241a.pdf</meta-value></custom-meta></custom-meta-group></article-meta></front></article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Horizontal jets and vortex dipoles in a stratified fluid</title></titleInfo><titleInfo type="alternative" lang="en" contentType="CDATA"><title>Horizontal jets and vortex dipoles in a stratified fluid</title></titleInfo><name type="personal"><namePart type="given">S. I.</namePart><namePart type="family">Voropayev</namePart><affiliation>Institute of Oceanology, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Ya. D.</namePart><namePart type="family">Afanasyev</namePart><affiliation>Institute of Oceanology, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">I. A.</namePart><namePart type="family">Filippov</namePart><affiliation>Institute of Oceanology, USSR Academy of Sciences, Krasikova 23, Moscow 117218, USSR</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="research-article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-1JC4F85T-7">research-article</genre><originInfo><publisher>Cambridge University Press</publisher><place><placeTerm type="text">Cambridge, UK</placeTerm></place><dateIssued encoding="w3cdtf">1991-06</dateIssued><dateCreated encoding="w3cdtf">2006-04-26</dateCreated><copyrightDate encoding="w3cdtf">2006</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><abstract type="normal" lang="en">When a horizontal force is applied locally to some volume of a viscous densitystratified fluid, flows with high concentration of vertically oriented vorticity (vortex dipoles) are generated. The processes of generation and evolution with time of these unsteady flows in a stratified fluid are studied. A convenient way to produce and study these flows in the laboratory is to use a submerged horizontal jet as a ‘point’ source of momentum. The main governing parameter (the ‘force’) is easily controlled in this case. Two regimes were studied: starting jets with dipolar vortex fronts (the force acts continuously) and impulsive vortex dipoles (the force acts for a short period of time). A conductivity microprobe, aluminium powder, shadowgraph, thymol-blue and other techniques have been used to measure the velocity and density distributions in the flows. It is found that in both regimes the flows are self-similar: the lengthscale of the flows increases with time as t ½ for starting jets and as t 1/3 for vortex dipoles. Detailed information about the generation mechanism, kinematics and dynamics of the flows is obtained. On the basis of similarity principles a theoretical explanation of the experimental results is given. The theory is in good agreement with the results obtained.</abstract><relatedItem type="host"><titleInfo><title>Journal of Fluid Mechanics</title></titleInfo><genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre><identifier type="ISSN">0022-1120</identifier><identifier type="eISSN">1469-7645</identifier><identifier type="PublisherID">FLM</identifier><part><date>1991</date><detail type="volume"><caption>vol.</caption><number>227</number></detail><extent unit="pages"><start>543</start><end>566</end><total>24</total></extent></part></relatedItem><identifier type="istex">1DCD11B39FD1E60E40C096E9FF5BE418413DD942</identifier><identifier type="ark">ark:/67375/6GQ-RLWXB2SP-J</identifier><identifier type="DOI">10.1017/S0022112091000241</identifier><identifier type="PII">S0022112091000241</identifier><accessCondition type="use and reproduction" contentType="copyright">© 1991 Cambridge University Press</accessCondition><recordInfo><recordContentSource authority="ISTEX" authorityURI="https://loaded-corpus.data.istex.fr" valueURI="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-G3RCRD03-V">cambridge</recordContentSource><recordOrigin>© 1991 Cambridge University Press</recordOrigin></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/ark:/67375/6GQ-RLWXB2SP-J/record.json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Sante/explor/H2N2V1/Data/Istex/Corpus
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 001279 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Istex/Corpus/biblio.hfd -nk 001279 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Sante
|area= H2N2V1
|flux= Istex
|étape= Corpus
|type= RBID
|clé= ISTEX:1DCD11B39FD1E60E40C096E9FF5BE418413DD942
|texte= Horizontal jets and vortex dipoles in a stratified fluid
}}
| This area was generated with Dilib version V0.6.33. |  |