Experimental analysis of the unit cell approach for two-phase flow dynamics in curved flow channels
Flow behavior of gas–liquid mixtures in thin channels has become increasingly important as a result of miniaturization of fluid and thermal systems. The present empirical study investigates the use of the unit cell or periodic boundary approach commonly used in two-phase flows. This work examines th...
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| Veröffentlicht in: | International journal of heat and mass transfer 2008-03, Vol.51 (5), p.1095-1103 |
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| container_title | International journal of heat and mass transfer |
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| creator | Kirpalani, D.M. Patel, T. Mehrani, P. Macchi, A. |
| description | Flow behavior of gas–liquid mixtures in thin channels has become increasingly important as a result of miniaturization of fluid and thermal systems. The present empirical study investigates the use of the unit cell or periodic boundary approach commonly used in two-phase flows. This work examines the flow patterns formed in small tube diameter ( |
| doi_str_mv | 10.1016/j.ijheatmasstransfer.2007.05.020 |
| format | Article |
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mm) and curved geometry flow systems for air–water mixtures at standard conditions. Liquid and gas superficial velocities were varied from 0.1 to 7.0 (∼±0.01)
m/s and 0.03 to 14 (∼±0.2)
m/s for air and water respectively to determine the flow pattern formed in three geometries and dispersed bubble, plug, slug and annular flow patterns are reported using high-frame rate videography. Flow patterns formed were plotted on the generalized two-phase flow pattern map to interpret the effect of channel size and curvature on the flow regime boundaries. Relative to a straight a channel, it is shown that a ‘C shaped’ channel that causes a directional change in the flow induces chaotic advection and increases phase interaction to enhance gas bubble or liquid slug break-up thus altering the boundaries between the dispersed bubble and plug/slug flow regimes as well as between the annular and plug/slug flow regimes.</description><identifier>ISSN: 0017-9310</identifier><identifier>EISSN: 1879-2189</identifier><identifier>DOI: 10.1016/j.ijheatmasstransfer.2007.05.020</identifier><identifier>CODEN: IJHMAK</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Curved channel ; Exact sciences and technology ; Flow mapping ; Flows in ducts, channels, nozzles, and conduits ; Fluid dynamics ; Fundamental areas of phenomenology (including applications) ; Gas–liquid two phase flow ; Mini-channel ; mixing ; Multiphase and particle-laden flows ; Nonhomogeneous flows ; Physics</subject><ispartof>International journal of heat and mass transfer, 2008-03, Vol.51 (5), p.1095-1103</ispartof><rights>2007</rights><rights>2008 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c504t-26d69371cc1862d7938524297c20bb15ba290261e3b3e4beb8e1d80a918298ba3</citedby><cites>FETCH-LOGICAL-c504t-26d69371cc1862d7938524297c20bb15ba290261e3b3e4beb8e1d80a918298ba3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0017931007003912$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27903,27904,65309</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=20134354$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Kirpalani, D.M.</creatorcontrib><creatorcontrib>Patel, T.</creatorcontrib><creatorcontrib>Mehrani, P.</creatorcontrib><creatorcontrib>Macchi, A.</creatorcontrib><title>Experimental analysis of the unit cell approach for two-phase flow dynamics in curved flow channels</title><title>International journal of heat and mass transfer</title><description>Flow behavior of gas–liquid mixtures in thin channels has become increasingly important as a result of miniaturization of fluid and thermal systems. The present empirical study investigates the use of the unit cell or periodic boundary approach commonly used in two-phase flows. This work examines the flow patterns formed in small tube diameter (<3
mm) and curved geometry flow systems for air–water mixtures at standard conditions. Liquid and gas superficial velocities were varied from 0.1 to 7.0 (∼±0.01)
m/s and 0.03 to 14 (∼±0.2)
m/s for air and water respectively to determine the flow pattern formed in three geometries and dispersed bubble, plug, slug and annular flow patterns are reported using high-frame rate videography. Flow patterns formed were plotted on the generalized two-phase flow pattern map to interpret the effect of channel size and curvature on the flow regime boundaries. Relative to a straight a channel, it is shown that a ‘C shaped’ channel that causes a directional change in the flow induces chaotic advection and increases phase interaction to enhance gas bubble or liquid slug break-up thus altering the boundaries between the dispersed bubble and plug/slug flow regimes as well as between the annular and plug/slug flow regimes.</description><subject>Curved channel</subject><subject>Exact sciences and technology</subject><subject>Flow mapping</subject><subject>Flows in ducts, channels, nozzles, and conduits</subject><subject>Fluid dynamics</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Gas–liquid two phase flow</subject><subject>Mini-channel</subject><subject>mixing</subject><subject>Multiphase and particle-laden flows</subject><subject>Nonhomogeneous flows</subject><subject>Physics</subject><issn>0017-9310</issn><issn>1879-2189</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNqNkE1vFDEMhiMEEkvhP-QC4jJTJ5nPG6hq-VAlLnCOPBmPJqvZzBBnW_bfk9VWXLj0ZNl-9Np6hPiooFSgmut96fczYTogc4oYeKJYaoC2hLoEDS_ETnVtX2jV9S_FDkC1RW8UvBZvmPfnFqpmJ9ztn42iP1BIuEgMuJzYs1wnmWaSx-CTdLTkzbbFFd0spzXK9LgW24xMclrWRzmeAh68Y-mDdMf4QONl7mYMgRZ-K15NuDC9e6pX4tfd7c-br8X9jy_fbj7fF66GKhW6GZvetMo51TV6bHvT1brSfes0DIOqB9Q96EaRGQxVAw0dqbED7FWn-25AcyU-XHLzq7-PxMkePJ-_x0Drka3RbV0rpTL46QK6uDJHmuyWFWA8WQX2bNfu7f927dmuhdpmuzni_dMtZIfLlBnn-V-OBmUqU1eZ-37hsgd68DmFnafgaPSRXLLj6p9_9C8AQZ2q</recordid><startdate>20080301</startdate><enddate>20080301</enddate><creator>Kirpalani, D.M.</creator><creator>Patel, T.</creator><creator>Mehrani, P.</creator><creator>Macchi, A.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20080301</creationdate><title>Experimental analysis of the unit cell approach for two-phase flow dynamics in curved flow channels</title><author>Kirpalani, D.M. ; Patel, T. ; Mehrani, P. ; Macchi, A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c504t-26d69371cc1862d7938524297c20bb15ba290261e3b3e4beb8e1d80a918298ba3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Curved channel</topic><topic>Exact sciences and technology</topic><topic>Flow mapping</topic><topic>Flows in ducts, channels, nozzles, and conduits</topic><topic>Fluid dynamics</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>Gas–liquid two phase flow</topic><topic>Mini-channel</topic><topic>mixing</topic><topic>Multiphase and particle-laden flows</topic><topic>Nonhomogeneous flows</topic><topic>Physics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kirpalani, D.M.</creatorcontrib><creatorcontrib>Patel, T.</creatorcontrib><creatorcontrib>Mehrani, P.</creatorcontrib><creatorcontrib>Macchi, A.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>International journal of heat and mass transfer</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kirpalani, D.M.</au><au>Patel, T.</au><au>Mehrani, P.</au><au>Macchi, A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Experimental analysis of the unit cell approach for two-phase flow dynamics in curved flow channels</atitle><jtitle>International journal of heat and mass transfer</jtitle><date>2008-03-01</date><risdate>2008</risdate><volume>51</volume><issue>5</issue><spage>1095</spage><epage>1103</epage><pages>1095-1103</pages><issn>0017-9310</issn><eissn>1879-2189</eissn><coden>IJHMAK</coden><abstract>Flow behavior of gas–liquid mixtures in thin channels has become increasingly important as a result of miniaturization of fluid and thermal systems. The present empirical study investigates the use of the unit cell or periodic boundary approach commonly used in two-phase flows. This work examines the flow patterns formed in small tube diameter (<3
mm) and curved geometry flow systems for air–water mixtures at standard conditions. Liquid and gas superficial velocities were varied from 0.1 to 7.0 (∼±0.01)
m/s and 0.03 to 14 (∼±0.2)
m/s for air and water respectively to determine the flow pattern formed in three geometries and dispersed bubble, plug, slug and annular flow patterns are reported using high-frame rate videography. Flow patterns formed were plotted on the generalized two-phase flow pattern map to interpret the effect of channel size and curvature on the flow regime boundaries. Relative to a straight a channel, it is shown that a ‘C shaped’ channel that causes a directional change in the flow induces chaotic advection and increases phase interaction to enhance gas bubble or liquid slug break-up thus altering the boundaries between the dispersed bubble and plug/slug flow regimes as well as between the annular and plug/slug flow regimes.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.ijheatmasstransfer.2007.05.020</doi><tpages>9</tpages></addata></record> |
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| ispartof | International journal of heat and mass transfer, 2008-03, Vol.51 (5), p.1095-1103 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Curved channel Exact sciences and technology Flow mapping Flows in ducts, channels, nozzles, and conduits Fluid dynamics Fundamental areas of phenomenology (including applications) Gas–liquid two phase flow Mini-channel mixing Multiphase and particle-laden flows Nonhomogeneous flows Physics |
| title | Experimental analysis of the unit cell approach for two-phase flow dynamics in curved flow channels |
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