Singular air entrapment at vertical and horizontal supported jets: plunging jets versus hydraulic jumps
In plunging jets and at hydraulic jumps, large amounts of air bubbles are entrained at the impingement of the liquid jet into the receiving body. Air is entrapped and advected into a turbulent shear layer with strong interactions between the air bubble advection process and momentum shear flow. In t...
Gespeichert in:
| Veröffentlicht in: | Environmental fluid mechanics (Dordrecht, Netherlands : 2001) Netherlands : 2001), 2020-08, Vol.20 (4), p.1075-1100 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 1100 |
|---|---|
| container_issue | 4 |
| container_start_page | 1075 |
| container_title | Environmental fluid mechanics (Dordrecht, Netherlands : 2001) |
| container_volume | 20 |
| creator | Müller, Livia Chanson, Hubert |
| description | In plunging jets and at hydraulic jumps, large amounts of air bubbles are entrained at the impingement of the liquid jet into the receiving body. Air is entrapped and advected into a turbulent shear layer with strong interactions between the air bubble advection process and momentum shear flow. In this new physical study, air–water flow measurements were systematically repeated with identical inflow length, inflow depth and inflow velocity in a vertical supported jet (PJ) and a horizontal hydraulic jump (HJ). Detailed measurements were conducted with the same instrumentation. Both similarities and differences were observed between the two multiphase gas–liquid shear flows. Visual observations showed a key difference in the outer region, with a buoyancy-driven flow in the plunging jet with negligible void fraction, versus a strong recirculation motion with uncontrolled interfacial aeration in the hydraulic jump. Differences were also observed at the impingement perimeter, in terms of fluctuation frequencies and amplitudes, for identical inflow conditions. Both flow conditions yielded intense local singular air entrainment and close results were observed in terms of void fraction, bubble count rate, bubble chord sizes and interfacial area in the shear layer, in both the plunging jet and hydraulic jump. The transfer of momentum between impinging jet and receiving water, as well as the effect of buoyancy, were however affected by the flow geometry. |
| doi_str_mv | 10.1007/s10652-020-09742-w |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_2426843223</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2426843223</sourcerecordid><originalsourceid>FETCH-LOGICAL-c319t-91fc55cb28a896f9e9ab6372b337413f4d192c7cee8af8e67f57c298136761d83</originalsourceid><addsrcrecordid>eNp9kEtPwzAQhC0EEqXwBzhZ4mzwI7FjbqiCglSJA3C2XMdJE6VJ8IOq_HrcBokbp92RZmZXHwDXBN8SjMWdJ5jnFGGKEZYio2h3AmYkFwyRnODTw84FEhmR5-DC-xZjwqnAM1C_NX0dO-2gbhy0fXB63KYBdYBf1oXG6A7qvoSbwTXfQx-S9HEcBxdsCVsb_D0cu9jXqeYoDykfPdzsS6dj1xjYxu3oL8FZpTtvr37nHHw8Pb4vntHqdfmyeFghw4gMSJLK5LlZ00IXklfSSr3mTNA1Y-l5VmUlkdQIY22hq8JyUeXCUFkQxgUnZcHm4GbqHd3wGa0Pqh2i69NJRTPKi4xRypKLTi7jBu-drdTomq12e0WwOgBVE1CVgKojULVLITaFfDL3tXV_1f-kfgAxOXsi</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2426843223</pqid></control><display><type>article</type><title>Singular air entrapment at vertical and horizontal supported jets: plunging jets versus hydraulic jumps</title><source>SpringerLink Journals - AutoHoldings</source><creator>Müller, Livia ; Chanson, Hubert</creator><creatorcontrib>Müller, Livia ; Chanson, Hubert</creatorcontrib><description>In plunging jets and at hydraulic jumps, large amounts of air bubbles are entrained at the impingement of the liquid jet into the receiving body. Air is entrapped and advected into a turbulent shear layer with strong interactions between the air bubble advection process and momentum shear flow. In this new physical study, air–water flow measurements were systematically repeated with identical inflow length, inflow depth and inflow velocity in a vertical supported jet (PJ) and a horizontal hydraulic jump (HJ). Detailed measurements were conducted with the same instrumentation. Both similarities and differences were observed between the two multiphase gas–liquid shear flows. Visual observations showed a key difference in the outer region, with a buoyancy-driven flow in the plunging jet with negligible void fraction, versus a strong recirculation motion with uncontrolled interfacial aeration in the hydraulic jump. Differences were also observed at the impingement perimeter, in terms of fluctuation frequencies and amplitudes, for identical inflow conditions. Both flow conditions yielded intense local singular air entrainment and close results were observed in terms of void fraction, bubble count rate, bubble chord sizes and interfacial area in the shear layer, in both the plunging jet and hydraulic jump. The transfer of momentum between impinging jet and receiving water, as well as the effect of buoyancy, were however affected by the flow geometry.</description><identifier>ISSN: 1567-7419</identifier><identifier>EISSN: 1573-1510</identifier><identifier>DOI: 10.1007/s10652-020-09742-w</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Advection ; Aeration ; Aerodynamics ; Air bubbles ; Air entrainment ; Bubbles ; Buoyancy ; Classical Mechanics ; Earth and Environmental Science ; Earth Sciences ; Entrainment ; Entrapment ; Environmental Physics ; Flow geometry ; Flow measurement ; Fluid dynamics ; Hydraulic jump ; Hydraulics ; Hydrogeology ; Hydrology/Water Resources ; Impingement ; Inflow ; Instrumentation ; Jets ; Momentum ; Momentum transfer ; Oceanography ; Original Article ; Receiving waters ; Shear flow ; Shear layers ; Visual observation ; Void fraction ; Water depth ; Water flow</subject><ispartof>Environmental fluid mechanics (Dordrecht, Netherlands : 2001), 2020-08, Vol.20 (4), p.1075-1100</ispartof><rights>Springer Nature B.V. 2020</rights><rights>Springer Nature B.V. 2020.</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c319t-91fc55cb28a896f9e9ab6372b337413f4d192c7cee8af8e67f57c298136761d83</citedby><cites>FETCH-LOGICAL-c319t-91fc55cb28a896f9e9ab6372b337413f4d192c7cee8af8e67f57c298136761d83</cites><orcidid>0000-0002-2016-9650</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10652-020-09742-w$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10652-020-09742-w$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>315,781,785,27926,27927,41490,42559,51321</link.rule.ids></links><search><creatorcontrib>Müller, Livia</creatorcontrib><creatorcontrib>Chanson, Hubert</creatorcontrib><title>Singular air entrapment at vertical and horizontal supported jets: plunging jets versus hydraulic jumps</title><title>Environmental fluid mechanics (Dordrecht, Netherlands : 2001)</title><addtitle>Environ Fluid Mech</addtitle><description>In plunging jets and at hydraulic jumps, large amounts of air bubbles are entrained at the impingement of the liquid jet into the receiving body. Air is entrapped and advected into a turbulent shear layer with strong interactions between the air bubble advection process and momentum shear flow. In this new physical study, air–water flow measurements were systematically repeated with identical inflow length, inflow depth and inflow velocity in a vertical supported jet (PJ) and a horizontal hydraulic jump (HJ). Detailed measurements were conducted with the same instrumentation. Both similarities and differences were observed between the two multiphase gas–liquid shear flows. Visual observations showed a key difference in the outer region, with a buoyancy-driven flow in the plunging jet with negligible void fraction, versus a strong recirculation motion with uncontrolled interfacial aeration in the hydraulic jump. Differences were also observed at the impingement perimeter, in terms of fluctuation frequencies and amplitudes, for identical inflow conditions. Both flow conditions yielded intense local singular air entrainment and close results were observed in terms of void fraction, bubble count rate, bubble chord sizes and interfacial area in the shear layer, in both the plunging jet and hydraulic jump. The transfer of momentum between impinging jet and receiving water, as well as the effect of buoyancy, were however affected by the flow geometry.</description><subject>Advection</subject><subject>Aeration</subject><subject>Aerodynamics</subject><subject>Air bubbles</subject><subject>Air entrainment</subject><subject>Bubbles</subject><subject>Buoyancy</subject><subject>Classical Mechanics</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Entrainment</subject><subject>Entrapment</subject><subject>Environmental Physics</subject><subject>Flow geometry</subject><subject>Flow measurement</subject><subject>Fluid dynamics</subject><subject>Hydraulic jump</subject><subject>Hydraulics</subject><subject>Hydrogeology</subject><subject>Hydrology/Water Resources</subject><subject>Impingement</subject><subject>Inflow</subject><subject>Instrumentation</subject><subject>Jets</subject><subject>Momentum</subject><subject>Momentum transfer</subject><subject>Oceanography</subject><subject>Original Article</subject><subject>Receiving waters</subject><subject>Shear flow</subject><subject>Shear layers</subject><subject>Visual observation</subject><subject>Void fraction</subject><subject>Water depth</subject><subject>Water flow</subject><issn>1567-7419</issn><issn>1573-1510</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp9kEtPwzAQhC0EEqXwBzhZ4mzwI7FjbqiCglSJA3C2XMdJE6VJ8IOq_HrcBokbp92RZmZXHwDXBN8SjMWdJ5jnFGGKEZYio2h3AmYkFwyRnODTw84FEhmR5-DC-xZjwqnAM1C_NX0dO-2gbhy0fXB63KYBdYBf1oXG6A7qvoSbwTXfQx-S9HEcBxdsCVsb_D0cu9jXqeYoDykfPdzsS6dj1xjYxu3oL8FZpTtvr37nHHw8Pb4vntHqdfmyeFghw4gMSJLK5LlZ00IXklfSSr3mTNA1Y-l5VmUlkdQIY22hq8JyUeXCUFkQxgUnZcHm4GbqHd3wGa0Pqh2i69NJRTPKi4xRypKLTi7jBu-drdTomq12e0WwOgBVE1CVgKojULVLITaFfDL3tXV_1f-kfgAxOXsi</recordid><startdate>20200801</startdate><enddate>20200801</enddate><creator>Müller, Livia</creator><creator>Chanson, Hubert</creator><general>Springer Netherlands</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QH</scope><scope>7ST</scope><scope>7TG</scope><scope>7UA</scope><scope>7XB</scope><scope>88I</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L.G</scope><scope>M2P</scope><scope>PATMY</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PYCSY</scope><scope>Q9U</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0002-2016-9650</orcidid></search><sort><creationdate>20200801</creationdate><title>Singular air entrapment at vertical and horizontal supported jets: plunging jets versus hydraulic jumps</title><author>Müller, Livia ; Chanson, Hubert</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c319t-91fc55cb28a896f9e9ab6372b337413f4d192c7cee8af8e67f57c298136761d83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Advection</topic><topic>Aeration</topic><topic>Aerodynamics</topic><topic>Air bubbles</topic><topic>Air entrainment</topic><topic>Bubbles</topic><topic>Buoyancy</topic><topic>Classical Mechanics</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Entrainment</topic><topic>Entrapment</topic><topic>Environmental Physics</topic><topic>Flow geometry</topic><topic>Flow measurement</topic><topic>Fluid dynamics</topic><topic>Hydraulic jump</topic><topic>Hydraulics</topic><topic>Hydrogeology</topic><topic>Hydrology/Water Resources</topic><topic>Impingement</topic><topic>Inflow</topic><topic>Instrumentation</topic><topic>Jets</topic><topic>Momentum</topic><topic>Momentum transfer</topic><topic>Oceanography</topic><topic>Original Article</topic><topic>Receiving waters</topic><topic>Shear flow</topic><topic>Shear layers</topic><topic>Visual observation</topic><topic>Void fraction</topic><topic>Water depth</topic><topic>Water flow</topic><toplevel>online_resources</toplevel><creatorcontrib>Müller, Livia</creatorcontrib><creatorcontrib>Chanson, Hubert</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Aqualine</collection><collection>Environment Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ProQuest Central Student</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Science Database</collection><collection>Environmental Science Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Environmental Science Collection</collection><collection>ProQuest Central Basic</collection><collection>Environment Abstracts</collection><jtitle>Environmental fluid mechanics (Dordrecht, Netherlands : 2001)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Müller, Livia</au><au>Chanson, Hubert</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Singular air entrapment at vertical and horizontal supported jets: plunging jets versus hydraulic jumps</atitle><jtitle>Environmental fluid mechanics (Dordrecht, Netherlands : 2001)</jtitle><stitle>Environ Fluid Mech</stitle><date>2020-08-01</date><risdate>2020</risdate><volume>20</volume><issue>4</issue><spage>1075</spage><epage>1100</epage><pages>1075-1100</pages><issn>1567-7419</issn><eissn>1573-1510</eissn><abstract>In plunging jets and at hydraulic jumps, large amounts of air bubbles are entrained at the impingement of the liquid jet into the receiving body. Air is entrapped and advected into a turbulent shear layer with strong interactions between the air bubble advection process and momentum shear flow. In this new physical study, air–water flow measurements were systematically repeated with identical inflow length, inflow depth and inflow velocity in a vertical supported jet (PJ) and a horizontal hydraulic jump (HJ). Detailed measurements were conducted with the same instrumentation. Both similarities and differences were observed between the two multiphase gas–liquid shear flows. Visual observations showed a key difference in the outer region, with a buoyancy-driven flow in the plunging jet with negligible void fraction, versus a strong recirculation motion with uncontrolled interfacial aeration in the hydraulic jump. Differences were also observed at the impingement perimeter, in terms of fluctuation frequencies and amplitudes, for identical inflow conditions. Both flow conditions yielded intense local singular air entrainment and close results were observed in terms of void fraction, bubble count rate, bubble chord sizes and interfacial area in the shear layer, in both the plunging jet and hydraulic jump. The transfer of momentum between impinging jet and receiving water, as well as the effect of buoyancy, were however affected by the flow geometry.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s10652-020-09742-w</doi><tpages>26</tpages><orcidid>https://orcid.org/0000-0002-2016-9650</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1567-7419 |
| ispartof | Environmental fluid mechanics (Dordrecht, Netherlands : 2001), 2020-08, Vol.20 (4), p.1075-1100 |
| issn | 1567-7419 1573-1510 |
| language | eng |
| recordid | cdi_proquest_journals_2426843223 |
| source | SpringerLink Journals - AutoHoldings |
| subjects | Advection Aeration Aerodynamics Air bubbles Air entrainment Bubbles Buoyancy Classical Mechanics Earth and Environmental Science Earth Sciences Entrainment Entrapment Environmental Physics Flow geometry Flow measurement Fluid dynamics Hydraulic jump Hydraulics Hydrogeology Hydrology/Water Resources Impingement Inflow Instrumentation Jets Momentum Momentum transfer Oceanography Original Article Receiving waters Shear flow Shear layers Visual observation Void fraction Water depth Water flow |
| title | Singular air entrapment at vertical and horizontal supported jets: plunging jets versus hydraulic jumps |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-18T09%3A40%3A33IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Singular%20air%20entrapment%20at%20vertical%20and%20horizontal%20supported%20jets:%20plunging%20jets%20versus%20hydraulic%20jumps&rft.jtitle=Environmental%20fluid%20mechanics%20(Dordrecht,%20Netherlands%20:%202001)&rft.au=M%C3%BCller,%20Livia&rft.date=2020-08-01&rft.volume=20&rft.issue=4&rft.spage=1075&rft.epage=1100&rft.pages=1075-1100&rft.issn=1567-7419&rft.eissn=1573-1510&rft_id=info:doi/10.1007/s10652-020-09742-w&rft_dat=%3Cproquest_cross%3E2426843223%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2426843223&rft_id=info:pmid/&rfr_iscdi=true |