Ice breaking by a collapsing bubble
This work focuses on using the power of a collapsing bubble in ice breaking. We experimentally validated the possibility and investigated the mechanism of ice breaking with a single collapsing bubble, where the bubble was generated by underwater electric discharge and collapsed at various distances...
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| Veröffentlicht in: | Journal of fluid mechanics 2018-04, Vol.841, p.287-309 |
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| creator | Cui, Pu Zhang, A-Man Wang, Shiping Khoo, Boo Cheong |
| description | This work focuses on using the power of a collapsing bubble in ice breaking. We experimentally validated the possibility and investigated the mechanism of ice breaking with a single collapsing bubble, where the bubble was generated by underwater electric discharge and collapsed at various distances under ice plates with different thicknesses. Characteristics of the ice fracturing, bubble jets and shock waves emitted during the collapse of the bubble were captured. The pattern of the ice fracturing is related to the ice thickness and the bubble–ice distance. Fractures develop from the top of the ice plate, i.e. the ice–air interface, and this is attributed to the tension caused by the reflection of the shock waves at the interface. Such fracturing is lessened when the thickness of the ice plate or the bubble–ice distance increases. Fractures may also form from the bottom of the ice plate upon the shock wave incidence when the bubble–ice distance is sufficiently small. The ice plate motion and its effect on the bubble behaviour were analysed. The ice plate motion results in higher jet speed and greater elongation of the bubble shape along the vertical direction. It also causes the bubble initiated close to the ice plate to split and emit multiple shock waves at the end of the collapse. The findings suggest that collapsing bubbles can be used as a brand new way of ice breaking. |
| doi_str_mv | 10.1017/jfm.2018.63 |
| format | Article |
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We experimentally validated the possibility and investigated the mechanism of ice breaking with a single collapsing bubble, where the bubble was generated by underwater electric discharge and collapsed at various distances under ice plates with different thicknesses. Characteristics of the ice fracturing, bubble jets and shock waves emitted during the collapse of the bubble were captured. The pattern of the ice fracturing is related to the ice thickness and the bubble–ice distance. Fractures develop from the top of the ice plate, i.e. the ice–air interface, and this is attributed to the tension caused by the reflection of the shock waves at the interface. Such fracturing is lessened when the thickness of the ice plate or the bubble–ice distance increases. Fractures may also form from the bottom of the ice plate upon the shock wave incidence when the bubble–ice distance is sufficiently small. The ice plate motion and its effect on the bubble behaviour were analysed. The ice plate motion results in higher jet speed and greater elongation of the bubble shape along the vertical direction. It also causes the bubble initiated close to the ice plate to split and emit multiple shock waves at the end of the collapse. The findings suggest that collapsing bubbles can be used as a brand new way of ice breaking.</description><identifier>ISSN: 0022-1120</identifier><identifier>EISSN: 1469-7645</identifier><identifier>DOI: 10.1017/jfm.2018.63</identifier><language>eng</language><publisher>Cambridge, UK: Cambridge University Press</publisher><subject>Air-ice interface ; Breaking ; Bubble barriers ; Bubbles ; Distance ; Elongation ; Fluid mechanics ; Fluids ; Fractures ; Fracturing ; Ice ; Ice breaking ; Ice cover ; Ice plates ; Ice thickness ; JFM Papers ; Lithotripsy ; Plate motion ; Shock waves ; Ultrasonic imaging ; Wave reflection</subject><ispartof>Journal of fluid mechanics, 2018-04, Vol.841, p.287-309</ispartof><rights>2018 Cambridge University Press</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c365t-b692d35a21eb94478bc8d874c781ee834de3038cc80749f5a01744e6989bbb923</citedby><cites>FETCH-LOGICAL-c365t-b692d35a21eb94478bc8d874c781ee834de3038cc80749f5a01744e6989bbb923</cites><orcidid>0000-0001-8179-1366 ; 0000-0003-1299-3049</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.cambridge.org/core/product/identifier/S0022112018000630/type/journal_article$$EHTML$$P50$$Gcambridge$$H</linktohtml><link.rule.ids>164,314,776,780,27901,27902,55603</link.rule.ids></links><search><creatorcontrib>Cui, Pu</creatorcontrib><creatorcontrib>Zhang, A-Man</creatorcontrib><creatorcontrib>Wang, Shiping</creatorcontrib><creatorcontrib>Khoo, Boo Cheong</creatorcontrib><title>Ice breaking by a collapsing bubble</title><title>Journal of fluid mechanics</title><addtitle>J. Fluid Mech</addtitle><description>This work focuses on using the power of a collapsing bubble in ice breaking. We experimentally validated the possibility and investigated the mechanism of ice breaking with a single collapsing bubble, where the bubble was generated by underwater electric discharge and collapsed at various distances under ice plates with different thicknesses. Characteristics of the ice fracturing, bubble jets and shock waves emitted during the collapse of the bubble were captured. The pattern of the ice fracturing is related to the ice thickness and the bubble–ice distance. Fractures develop from the top of the ice plate, i.e. the ice–air interface, and this is attributed to the tension caused by the reflection of the shock waves at the interface. Such fracturing is lessened when the thickness of the ice plate or the bubble–ice distance increases. Fractures may also form from the bottom of the ice plate upon the shock wave incidence when the bubble–ice distance is sufficiently small. The ice plate motion and its effect on the bubble behaviour were analysed. The ice plate motion results in higher jet speed and greater elongation of the bubble shape along the vertical direction. It also causes the bubble initiated close to the ice plate to split and emit multiple shock waves at the end of the collapse. The findings suggest that collapsing bubbles can be used as a brand new way of ice breaking.</description><subject>Air-ice interface</subject><subject>Breaking</subject><subject>Bubble barriers</subject><subject>Bubbles</subject><subject>Distance</subject><subject>Elongation</subject><subject>Fluid mechanics</subject><subject>Fluids</subject><subject>Fractures</subject><subject>Fracturing</subject><subject>Ice</subject><subject>Ice breaking</subject><subject>Ice cover</subject><subject>Ice plates</subject><subject>Ice thickness</subject><subject>JFM Papers</subject><subject>Lithotripsy</subject><subject>Plate motion</subject><subject>Shock waves</subject><subject>Ultrasonic imaging</subject><subject>Wave reflection</subject><issn>0022-1120</issn><issn>1469-7645</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNptkMtKw0AUhgdRMEZXvkCgS5k698tSipdCwY2uh5nJpCQmTZxpFn17p7bgxtXhwHf-8_MBcI_REiMsH7tmWBKE1VLQC1BgJjSUgvFLUCBECMSYoGtwk1KHEKZIywIs1j5ULgb71e62lTtUtvJj39sp_e6zc324BVeN7VO4O88SfL48f6ze4Ob9db162kBPBd9DJzSpKbcEB6cZk8p5VSvJvFQ4BEVZHSiiynuFJNMNt7kxY0FopZ1zmtASLE65Uxy_55D2phvnuMsvDcmHXDGea5fg4UT5OKYUQ2Om2A42HgxG5mjBZAvmaMEImml4pu3gYltvw1_of_wP22db1g</recordid><startdate>20180425</startdate><enddate>20180425</enddate><creator>Cui, Pu</creator><creator>Zhang, A-Man</creator><creator>Wang, Shiping</creator><creator>Khoo, Boo Cheong</creator><general>Cambridge University Press</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TB</scope><scope>7U5</scope><scope>7UA</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>8G5</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>H8D</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KR7</scope><scope>L.G</scope><scope>L6V</scope><scope>L7M</scope><scope>M2O</scope><scope>M2P</scope><scope>M7S</scope><scope>MBDVC</scope><scope>P5Z</scope><scope>P62</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>Q9U</scope><scope>S0W</scope><orcidid>https://orcid.org/0000-0001-8179-1366</orcidid><orcidid>https://orcid.org/0000-0003-1299-3049</orcidid></search><sort><creationdate>20180425</creationdate><title>Ice breaking by a collapsing bubble</title><author>Cui, Pu ; 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Fluid Mech</addtitle><date>2018-04-25</date><risdate>2018</risdate><volume>841</volume><spage>287</spage><epage>309</epage><pages>287-309</pages><issn>0022-1120</issn><eissn>1469-7645</eissn><abstract>This work focuses on using the power of a collapsing bubble in ice breaking. We experimentally validated the possibility and investigated the mechanism of ice breaking with a single collapsing bubble, where the bubble was generated by underwater electric discharge and collapsed at various distances under ice plates with different thicknesses. Characteristics of the ice fracturing, bubble jets and shock waves emitted during the collapse of the bubble were captured. The pattern of the ice fracturing is related to the ice thickness and the bubble–ice distance. Fractures develop from the top of the ice plate, i.e. the ice–air interface, and this is attributed to the tension caused by the reflection of the shock waves at the interface. Such fracturing is lessened when the thickness of the ice plate or the bubble–ice distance increases. Fractures may also form from the bottom of the ice plate upon the shock wave incidence when the bubble–ice distance is sufficiently small. The ice plate motion and its effect on the bubble behaviour were analysed. The ice plate motion results in higher jet speed and greater elongation of the bubble shape along the vertical direction. It also causes the bubble initiated close to the ice plate to split and emit multiple shock waves at the end of the collapse. The findings suggest that collapsing bubbles can be used as a brand new way of ice breaking.</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><doi>10.1017/jfm.2018.63</doi><tpages>23</tpages><orcidid>https://orcid.org/0000-0001-8179-1366</orcidid><orcidid>https://orcid.org/0000-0003-1299-3049</orcidid></addata></record> |
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| ispartof | Journal of fluid mechanics, 2018-04, Vol.841, p.287-309 |
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| source | Cambridge Journals |
| subjects | Air-ice interface Breaking Bubble barriers Bubbles Distance Elongation Fluid mechanics Fluids Fractures Fracturing Ice Ice breaking Ice cover Ice plates Ice thickness JFM Papers Lithotripsy Plate motion Shock waves Ultrasonic imaging Wave reflection |
| title | Ice breaking by a collapsing bubble |
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