Numerical and experimental studies of the rolling sphere wake
Identifieur interne : 007081 ( Main/Exploration ); précédent : 007080; suivant : 007082Numerical and experimental studies of the rolling sphere wake
Auteurs : B. E. Stewart [Australie, France] ; M. C. Thompson [Australie] ; T. Leweke [France] ; K. Hourigan [Australie]Source :
- Journal of Fluid Mechanics [ 0022-1120 ] ; 2010-01-25.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
A numerical and experimental investigation is reported for the flow around a rolling sphere when moving adjacent to a plane wall. The dimensionless rotation rate of the sphere is varied from forward to reversed rolling and the resulting wake modes are found to be strongly dependent on the value of this parameter. Results are reported for the Reynolds number range 100 < Re < 350, which has been shown to capture the unsteady transitions in the wake. Over this range of Reynolds number, both steady and unsteady wake modes are observed. As the sphere undergoes forward rolling, the wake displays similarities to the flow behind an isolated sphere in a free stream. As the Reynolds number of the flow increases, hairpin vortices form and are shed over the surface of the sphere. However, for cases with reversed rotation, the wake takes the form of two distinct streamwise vortices that form around the sides of the body. These streamwise structures in the wake undergo a transition to a new unsteady mode as the Reynolds number increases. During the evolution of this unsteady mode, the streamwise vortices form an out-of-phase spiral pair. Four primary wake modes are identified and a very good qualitative agreement is observed between the numerical and experimental results. The numerical simulations also reveal the existence of an additional unsteady mode that is found to be unstable to small perturbations in the flow.
Url:
DOI: 10.1017/S0022112009992072
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 001F69
- to stream Istex, to step Curation: 001F69
- to stream Istex, to step Checkpoint: 000987
- to stream Main, to step Merge: 007615
- to stream PascalFrancis, to step Corpus: 002791
- to stream PascalFrancis, to step Curation: 003795
- to stream PascalFrancis, to step Checkpoint: 002200
- to stream Main, to step Merge: 007C68
- to stream Main, to step Curation: 007081
Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title>Numerical and experimental studies of the rolling sphere wake</title>
<author><name sortKey="Stewart, B E" sort="Stewart, B E" uniqKey="Stewart B" first="B. E." last="Stewart">B. E. Stewart</name>
</author>
<author><name sortKey="Thompson, M C" sort="Thompson, M C" uniqKey="Thompson M" first="M. C." last="Thompson">M. C. Thompson</name>
</author>
<author><name sortKey="Leweke, T" sort="Leweke, T" uniqKey="Leweke T" first="T." last="Leweke">T. Leweke</name>
</author>
<author><name sortKey="Hourigan, K" sort="Hourigan, K" uniqKey="Hourigan K" first="K." last="Hourigan">K. Hourigan</name>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">ISTEX</idno>
<idno type="RBID">ISTEX:A6A4D1DFC6EA1D251A4DDF9E88165D25376FD0CB</idno>
<date when="2010" year="2010">2010</date>
<idno type="doi">10.1017/S0022112009992072</idno>
<idno type="url">https://api.istex.fr/document/A6A4D1DFC6EA1D251A4DDF9E88165D25376FD0CB/fulltext/pdf</idno>
<idno type="wicri:Area/Istex/Corpus">001F69</idno>
<idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001F69</idno>
<idno type="wicri:Area/Istex/Curation">001F69</idno>
<idno type="wicri:Area/Istex/Checkpoint">000987</idno>
<idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">000987</idno>
<idno type="wicri:doubleKey">0022-1120:2010:Stewart B:numerical:and:experimental</idno>
<idno type="wicri:Area/Main/Merge">007615</idno>
<idno type="wicri:source">INIST</idno>
<idno type="RBID">Pascal:10-0159316</idno>
<idno type="wicri:Area/PascalFrancis/Corpus">002791</idno>
<idno type="wicri:Area/PascalFrancis/Curation">003795</idno>
<idno type="wicri:Area/PascalFrancis/Checkpoint">002200</idno>
<idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">002200</idno>
<idno type="wicri:doubleKey">0022-1120:2010:Stewart B:numerical:and:experimental</idno>
<idno type="wicri:Area/Main/Merge">007C68</idno>
<idno type="wicri:Area/Main/Curation">007081</idno>
<idno type="wicri:Area/Main/Exploration">007081</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title level="a">Numerical and experimental studies of the rolling sphere wake</title>
<author><name sortKey="Stewart, B E" sort="Stewart, B E" uniqKey="Stewart B" first="B. E." last="Stewart">B. E. Stewart</name>
<affiliation wicri:level="1"><country xml:lang="fr">Australie</country>
<wicri:regionArea>Fluids Laboratory for Aeronautical and Industrial Research (FLAIR), Department of Mechanical and Aerospace Engineering, Monash University, Melbourne, Victoria 3800</wicri:regionArea>
<wicri:noRegion>Victoria 3800</wicri:noRegion>
</affiliation>
<affiliation wicri:level="3"><country xml:lang="fr">France</country>
<wicri:regionArea>Institut de Recherche sur les Phénomènes Hors Equilibre, CNRS/Universités Aix-Marseille, 49 rue Frédéric Joliot-Curie, BP 146, F-13384 Marseille cedex 13</wicri:regionArea>
<placeName><region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region>
<settlement type="city">Marseille</settlement>
</placeName>
</affiliation>
<affiliation></affiliation>
</author>
<author><name sortKey="Thompson, M C" sort="Thompson, M C" uniqKey="Thompson M" first="M. C." last="Thompson">M. C. Thompson</name>
<affiliation wicri:level="1"><country xml:lang="fr">Australie</country>
<wicri:regionArea>Fluids Laboratory for Aeronautical and Industrial Research (FLAIR), Department of Mechanical and Aerospace Engineering, Monash University, Melbourne, Victoria 3800</wicri:regionArea>
<wicri:noRegion>Victoria 3800</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Leweke, T" sort="Leweke, T" uniqKey="Leweke T" first="T." last="Leweke">T. Leweke</name>
<affiliation wicri:level="1"><country xml:lang="fr">France</country>
<wicri:regionArea>Institut de Recherche sur les Phénomènes Hors Equilibre, CNRS/Universités Aix-Marseille, 49 rue Frédéric Joliot-Curie, BP 146, F-13384 Marseille cedex 13</wicri:regionArea>
<wicri:noRegion>13384 Marseille cedex 13</wicri:noRegion>
<wicri:noRegion>F-13384 Marseille cedex 13</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Hourigan, K" sort="Hourigan, K" uniqKey="Hourigan K" first="K." last="Hourigan">K. Hourigan</name>
<affiliation wicri:level="1"><country xml:lang="fr">Australie</country>
<wicri:regionArea>Fluids Laboratory for Aeronautical and Industrial Research (FLAIR), Department of Mechanical and Aerospace Engineering, Monash University, Melbourne, Victoria 3800</wicri:regionArea>
<wicri:noRegion>Victoria 3800</wicri:noRegion>
</affiliation>
<affiliation wicri:level="1"><country xml:lang="fr">Australie</country>
<wicri:regionArea>Division of Biological Engineering, Monash University, Melbourne, Victoria 3800</wicri:regionArea>
<wicri:noRegion>Victoria 3800</wicri:noRegion>
</affiliation>
</author>
</analytic>
<monogr></monogr>
<series><title level="j">Journal of Fluid Mechanics</title>
<title level="j" type="abbrev">J. Fluid Mech.</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="2010-01-25">2010-01-25</date>
<biblScope unit="volume">643</biblScope>
<biblScope unit="page" from="137">137</biblScope>
<biblScope unit="page" to="162">162</biblScope>
</imprint>
<idno type="ISSN">0022-1120</idno>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><idno type="ISSN">0022-1120</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Digital simulation</term>
<term>Drag coefficient</term>
<term>Experimental study</term>
<term>Plane wall</term>
<term>Rotating sphere</term>
<term>Velocity distribution</term>
<term>Vortex flow</term>
<term>Vortex shedding</term>
<term>Wakes</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>4727V</term>
<term>4732F</term>
<term>Coefficient traînée</term>
<term>Distribution vitesse</term>
<term>Détachement tourbillonnaire</term>
<term>Ecoulement tourbillonnaire</term>
<term>Etude expérimentale</term>
<term>Paroi plane</term>
<term>Sillage</term>
<term>Simulation numérique</term>
<term>Sphère tournante</term>
</keywords>
</textClass>
<langUsage><language ident="en">en</language>
</langUsage>
</profileDesc>
</teiHeader>
<front><div type="abstract">A numerical and experimental investigation is reported for the flow around a rolling sphere when moving adjacent to a plane wall. The dimensionless rotation rate of the sphere is varied from forward to reversed rolling and the resulting wake modes are found to be strongly dependent on the value of this parameter. Results are reported for the Reynolds number range 100 < Re < 350, which has been shown to capture the unsteady transitions in the wake. Over this range of Reynolds number, both steady and unsteady wake modes are observed. As the sphere undergoes forward rolling, the wake displays similarities to the flow behind an isolated sphere in a free stream. As the Reynolds number of the flow increases, hairpin vortices form and are shed over the surface of the sphere. However, for cases with reversed rotation, the wake takes the form of two distinct streamwise vortices that form around the sides of the body. These streamwise structures in the wake undergo a transition to a new unsteady mode as the Reynolds number increases. During the evolution of this unsteady mode, the streamwise vortices form an out-of-phase spiral pair. Four primary wake modes are identified and a very good qualitative agreement is observed between the numerical and experimental results. The numerical simulations also reveal the existence of an additional unsteady mode that is found to be unstable to small perturbations in the flow.</div>
</front>
</TEI>
<affiliations><list><country><li>Australie</li>
<li>France</li>
</country>
<region><li>Provence-Alpes-Côte d'Azur</li>
</region>
<settlement><li>Marseille</li>
</settlement>
</list>
<tree><country name="Australie"><noRegion><name sortKey="Stewart, B E" sort="Stewart, B E" uniqKey="Stewart B" first="B. E." last="Stewart">B. E. Stewart</name>
</noRegion>
<name sortKey="Hourigan, K" sort="Hourigan, K" uniqKey="Hourigan K" first="K." last="Hourigan">K. Hourigan</name>
<name sortKey="Hourigan, K" sort="Hourigan, K" uniqKey="Hourigan K" first="K." last="Hourigan">K. Hourigan</name>
<name sortKey="Thompson, M C" sort="Thompson, M C" uniqKey="Thompson M" first="M. C." last="Thompson">M. C. Thompson</name>
</country>
<country name="France"><region name="Provence-Alpes-Côte d'Azur"><name sortKey="Stewart, B E" sort="Stewart, B E" uniqKey="Stewart B" first="B. E." last="Stewart">B. E. Stewart</name>
</region>
<name sortKey="Leweke, T" sort="Leweke, T" uniqKey="Leweke T" first="T." last="Leweke">T. Leweke</name>
</country>
</tree>
</affiliations>
</record>
Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Asie/explor/AustralieFrV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 007081 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 007081 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien |wiki= Wicri/Asie |area= AustralieFrV1 |flux= Main |étape= Exploration |type= RBID |clé= ISTEX:A6A4D1DFC6EA1D251A4DDF9E88165D25376FD0CB |texte= Numerical and experimental studies of the rolling sphere wake }}
This area was generated with Dilib version V0.6.33. |