Breakup in stochastic Stokes flows: sub-Kolmogorov drops in isotropic turbulence
Deformation and breakup of drops in an isotropic turbulent flow has been studied by numerical simulation. The numerical method involves a pseudospectral representation of the turbulent outer flow field coupled to three-dimensional boundary integral simulations of the local drop dynamics. A statistic...
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| Veröffentlicht in: | Journal of fluid mechanics 2003-10, Vol.492, p.231-250, Article S0022112003005561 |
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| container_title | Journal of fluid mechanics |
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| creator | CRISTINI, VITTORIO BŁAWZDZIEWICZ, J. LOEWENBERG, MICHAEL COLLINS, LANCE R. |
| description | Deformation and breakup of drops in an isotropic turbulent flow has been studied by numerical simulation. The numerical method involves a pseudospectral representation of the turbulent outer flow field coupled to three-dimensional boundary integral simulations of the local drop dynamics. A statistical analysis based on an ensemble of drop trajectories is presented; results include breakup rates, the distribution of primary daughter drops produced by breakup events, and stationary distributions for drop deformation and orientation. Depending on the local flow history, drops may break at modest length or become highly elongated and relax without breaking. Drop deformation is the dominant mechanism of drop reorientation. The volume of the primary daughter drops, produced by a given fluctuation in flow strength, scales with the volume of the corresponding critical drop size for the fluctuation. A simplified description for the evolution of the drop size distribution, based on this scaling, is presented. |
| doi_str_mv | 10.1017/S0022112003005561 |
| format | Article |
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The numerical method involves a pseudospectral representation of the turbulent outer flow field coupled to three-dimensional boundary integral simulations of the local drop dynamics. A statistical analysis based on an ensemble of drop trajectories is presented; results include breakup rates, the distribution of primary daughter drops produced by breakup events, and stationary distributions for drop deformation and orientation. Depending on the local flow history, drops may break at modest length or become highly elongated and relax without breaking. Drop deformation is the dominant mechanism of drop reorientation. The volume of the primary daughter drops, produced by a given fluctuation in flow strength, scales with the volume of the corresponding critical drop size for the fluctuation. A simplified description for the evolution of the drop size distribution, based on this scaling, is presented.</description><identifier>ISSN: 0022-1120</identifier><identifier>EISSN: 1469-7645</identifier><identifier>DOI: 10.1017/S0022112003005561</identifier><identifier>CODEN: JFLSA7</identifier><language>eng</language><publisher>Cambridge, UK: Cambridge University Press</publisher><subject>Deformation ; Drops and bubbles ; Exact sciences and technology ; Fluid dynamics ; Fluid mechanics ; Fundamental areas of phenomenology (including applications) ; Isotropic turbulence; homogeneous turbulence ; Nonhomogeneous flows ; Physics ; Statistical analysis ; Stochastic models ; Studies ; Turbulent flow ; Turbulent flows, convection, and heat transfer</subject><ispartof>Journal of fluid mechanics, 2003-10, Vol.492, p.231-250, Article S0022112003005561</ispartof><rights>2003 Cambridge University Press</rights><rights>2003 INIST-CNRS</rights><rights>Copyright Cambridge University Press Oct 2003</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c445t-4d9487659d1bf3700899c02f5489638fed5b76c3c7abf08f29c12ed4c0b0ba453</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.cambridge.org/core/product/identifier/S0022112003005561/type/journal_article$$EHTML$$P50$$Gcambridge$$H</linktohtml><link.rule.ids>164,314,776,780,27901,27902,55603</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=15164370$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>CRISTINI, VITTORIO</creatorcontrib><creatorcontrib>BŁAWZDZIEWICZ, J.</creatorcontrib><creatorcontrib>LOEWENBERG, MICHAEL</creatorcontrib><creatorcontrib>COLLINS, LANCE R.</creatorcontrib><title>Breakup in stochastic Stokes flows: sub-Kolmogorov drops in isotropic turbulence</title><title>Journal of fluid mechanics</title><addtitle>J. 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Fluid Mech</addtitle><date>2003-10-10</date><risdate>2003</risdate><volume>492</volume><spage>231</spage><epage>250</epage><pages>231-250</pages><artnum>S0022112003005561</artnum><issn>0022-1120</issn><eissn>1469-7645</eissn><coden>JFLSA7</coden><abstract>Deformation and breakup of drops in an isotropic turbulent flow has been studied by numerical simulation. The numerical method involves a pseudospectral representation of the turbulent outer flow field coupled to three-dimensional boundary integral simulations of the local drop dynamics. A statistical analysis based on an ensemble of drop trajectories is presented; results include breakup rates, the distribution of primary daughter drops produced by breakup events, and stationary distributions for drop deformation and orientation. Depending on the local flow history, drops may break at modest length or become highly elongated and relax without breaking. Drop deformation is the dominant mechanism of drop reorientation. The volume of the primary daughter drops, produced by a given fluctuation in flow strength, scales with the volume of the corresponding critical drop size for the fluctuation. A simplified description for the evolution of the drop size distribution, based on this scaling, is presented.</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><doi>10.1017/S0022112003005561</doi><tpages>20</tpages></addata></record> |
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| subjects | Deformation Drops and bubbles Exact sciences and technology Fluid dynamics Fluid mechanics Fundamental areas of phenomenology (including applications) Isotropic turbulence homogeneous turbulence Nonhomogeneous flows Physics Statistical analysis Stochastic models Studies Turbulent flow Turbulent flows, convection, and heat transfer |
| title | Breakup in stochastic Stokes flows: sub-Kolmogorov drops in isotropic turbulence |
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