Evolution of the ejecta sheet from the impact of a drop with a deep pool
We used optical and X-ray imaging to observe the formation of jets from the impact of a single drop with a deep layer of the same liquid. For high Reynolds number there are two distinct jets: the thin, fast and early-emerging ejecta; and the slow, thick and late-emerging lamella. For low Reynolds nu...
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| Veröffentlicht in: | Journal of fluid mechanics 2012-01, Vol.690, p.5-15 |
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| container_title | Journal of fluid mechanics |
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| creator | Zhang, L. V. Toole, J. Fezzaa, K. Deegan, R. D. |
| description | We used optical and X-ray imaging to observe the formation of jets from the impact of a single drop with a deep layer of the same liquid. For high Reynolds number there are two distinct jets: the thin, fast and early-emerging ejecta; and the slow, thick and late-emerging lamella. For low Reynolds number the two jets merge into a single continuous jet, the structure of which is determined by the distinct contributions of the lamella and the ejecta. We measured the emergence time, position and speed of the ejecta sheet, and find that these scale as power laws with the impact speed and the viscosity. We identified the origin of secondary droplets with the breakup of the lamella and the ejecta jets, and show that the size of the droplets is not a good indicator of their origin. |
| doi_str_mv | 10.1017/jfm.2011.396 |
| format | Article |
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V. ; Toole, J. ; Fezzaa, K. ; Deegan, R. D.</creator><creatorcontrib>Zhang, L. V. ; Toole, J. ; Fezzaa, K. ; Deegan, R. D.</creatorcontrib><description>We used optical and X-ray imaging to observe the formation of jets from the impact of a single drop with a deep layer of the same liquid. For high Reynolds number there are two distinct jets: the thin, fast and early-emerging ejecta; and the slow, thick and late-emerging lamella. For low Reynolds number the two jets merge into a single continuous jet, the structure of which is determined by the distinct contributions of the lamella and the ejecta. We measured the emergence time, position and speed of the ejecta sheet, and find that these scale as power laws with the impact speed and the viscosity. We identified the origin of secondary droplets with the breakup of the lamella and the ejecta jets, and show that the size of the droplets is not a good indicator of their origin.</description><identifier>ISSN: 0022-1120</identifier><identifier>EISSN: 1469-7645</identifier><identifier>DOI: 10.1017/jfm.2011.396</identifier><identifier>CODEN: JFLSA7</identifier><language>eng</language><publisher>Cambridge, UK: Cambridge University Press</publisher><subject>Applied fluid mechanics ; Droplets ; Ejecta ; Emergence ; Exact sciences and technology ; Fluid dynamics ; Fluid mechanics ; Fundamental areas of phenomenology (including applications) ; Hydrodynamics, hydraulics, hydrostatics ; Imaging ; Jets ; Lamella ; Low Reynolds number ; Origins ; Physics ; Reynolds number ; Scientific imaging ; Viscosity</subject><ispartof>Journal of fluid mechanics, 2012-01, Vol.690, p.5-15</ispartof><rights>Copyright © Cambridge University Press 2012</rights><rights>2015 INIST-CNRS</rights><rights>Copyright © Cambridge University Press 2011</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c397t-52fa5c0a30946426999f168423730b29633778e100771d323575a10f6e88d0153</citedby><cites>FETCH-LOGICAL-c397t-52fa5c0a30946426999f168423730b29633778e100771d323575a10f6e88d0153</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.cambridge.org/core/product/identifier/S002211201100396X/type/journal_article$$EHTML$$P50$$Gcambridge$$H</linktohtml><link.rule.ids>164,314,780,784,27922,27923,55626</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=25948104$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Zhang, L. V.</creatorcontrib><creatorcontrib>Toole, J.</creatorcontrib><creatorcontrib>Fezzaa, K.</creatorcontrib><creatorcontrib>Deegan, R. D.</creatorcontrib><title>Evolution of the ejecta sheet from the impact of a drop with a deep pool</title><title>Journal of fluid mechanics</title><addtitle>J. Fluid Mech</addtitle><description>We used optical and X-ray imaging to observe the formation of jets from the impact of a single drop with a deep layer of the same liquid. For high Reynolds number there are two distinct jets: the thin, fast and early-emerging ejecta; and the slow, thick and late-emerging lamella. For low Reynolds number the two jets merge into a single continuous jet, the structure of which is determined by the distinct contributions of the lamella and the ejecta. We measured the emergence time, position and speed of the ejecta sheet, and find that these scale as power laws with the impact speed and the viscosity. We identified the origin of secondary droplets with the breakup of the lamella and the ejecta jets, and show that the size of the droplets is not a good indicator of their origin.</description><subject>Applied fluid mechanics</subject><subject>Droplets</subject><subject>Ejecta</subject><subject>Emergence</subject><subject>Exact sciences and technology</subject><subject>Fluid dynamics</subject><subject>Fluid mechanics</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Hydrodynamics, hydraulics, hydrostatics</subject><subject>Imaging</subject><subject>Jets</subject><subject>Lamella</subject><subject>Low Reynolds number</subject><subject>Origins</subject><subject>Physics</subject><subject>Reynolds number</subject><subject>Scientific imaging</subject><subject>Viscosity</subject><issn>0022-1120</issn><issn>1469-7645</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNqFkVFLwzAQx4MoOKdvfoAiCD7YeZc0SfMoYzph4Is-l6xLXEvb1KRT_PZmbiiIIAQSjl9-x92fkHOECQLKm9q2EwqIE6bEARlhJlQqRcYPyQiA0hSRwjE5CaEGQAZKjsh89uaazVC5LnE2GdYmMbUpB52EtTFDYr1rv6pV2-ty2DI6WXnXJ-_VsN6-jemT3rnmlBxZ3QRztr_H5Plu9jSdp4vH-4fp7SItmZJDyqnVvAQdu2cio0IpZVHkGWWSwZIqwZiUuUEAKXHFKOOSawQrTJ6vADkbk6udt_fudWPCULRVKE3T6M64TSgwWinmQsn_UUDIFeUcI3rxC63dxndxkELFpUE8eYSud1DpXQje2KL3Vav9RzRtZbKIARTbAIoYQMQv904dSt1Yr7uyCt9_KFdZjpBFbrLX6nbpq9WL-Wn-p_gT0aGP4w</recordid><startdate>20120110</startdate><enddate>20120110</enddate><creator>Zhang, L. 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V. ; Toole, J. ; Fezzaa, K. ; Deegan, R. D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c397t-52fa5c0a30946426999f168423730b29633778e100771d323575a10f6e88d0153</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Applied fluid mechanics</topic><topic>Droplets</topic><topic>Ejecta</topic><topic>Emergence</topic><topic>Exact sciences and technology</topic><topic>Fluid dynamics</topic><topic>Fluid mechanics</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>Hydrodynamics, hydraulics, hydrostatics</topic><topic>Imaging</topic><topic>Jets</topic><topic>Lamella</topic><topic>Low Reynolds number</topic><topic>Origins</topic><topic>Physics</topic><topic>Reynolds number</topic><topic>Scientific imaging</topic><topic>Viscosity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, L. 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V.</au><au>Toole, J.</au><au>Fezzaa, K.</au><au>Deegan, R. D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Evolution of the ejecta sheet from the impact of a drop with a deep pool</atitle><jtitle>Journal of fluid mechanics</jtitle><addtitle>J. Fluid Mech</addtitle><date>2012-01-10</date><risdate>2012</risdate><volume>690</volume><spage>5</spage><epage>15</epage><pages>5-15</pages><issn>0022-1120</issn><eissn>1469-7645</eissn><coden>JFLSA7</coden><abstract>We used optical and X-ray imaging to observe the formation of jets from the impact of a single drop with a deep layer of the same liquid. For high Reynolds number there are two distinct jets: the thin, fast and early-emerging ejecta; and the slow, thick and late-emerging lamella. For low Reynolds number the two jets merge into a single continuous jet, the structure of which is determined by the distinct contributions of the lamella and the ejecta. We measured the emergence time, position and speed of the ejecta sheet, and find that these scale as power laws with the impact speed and the viscosity. We identified the origin of secondary droplets with the breakup of the lamella and the ejecta jets, and show that the size of the droplets is not a good indicator of their origin.</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><doi>10.1017/jfm.2011.396</doi><tpages>11</tpages></addata></record> |
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| source | Cambridge Journals |
| subjects | Applied fluid mechanics Droplets Ejecta Emergence Exact sciences and technology Fluid dynamics Fluid mechanics Fundamental areas of phenomenology (including applications) Hydrodynamics, hydraulics, hydrostatics Imaging Jets Lamella Low Reynolds number Origins Physics Reynolds number Scientific imaging Viscosity |
| title | Evolution of the ejecta sheet from the impact of a drop with a deep pool |
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