The effect of pipe diameter on the structure of gas/liquid flow in vertical pipes
Experimental work on two-phase vertical upward flow was carried out using a 19 mm internal diameter, 7 m long pipe and studying the time series of cross-sectional average void fractions and pressure gradient which were obtained simultaneously. With the aid of a bank of published data in which the pi...
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| Veröffentlicht in: | International journal of multiphase flow 2010-04, Vol.36 (4), p.303-313 |
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| container_title | International journal of multiphase flow |
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| creator | Kaji, R. Azzopardi, B.J. |
| description | Experimental work on two-phase vertical upward flow was carried out using a 19
mm internal diameter, 7
m long pipe and studying the time series of cross-sectional average void fractions and pressure gradient which were obtained simultaneously. With the aid of a bank of published data in which the pipe diameter is the range from 0.5 to 70
mm, the effect of pipe diameter on flow characteristics of two-phase flow is investigated from various aspects. Particularly, the work focuses on the periodic structures of two-phase flow. Average film thicknesses and the gas flow rate where slug/churn and churn/annular flow transitions occur all increase as the diameter of the pipe becomes larger. On the other hand, the pressure gradients, the frequencies of the periodic structures and the velocities of disturbance waves decrease. The velocity of disturbance waves has been used to test the model of Pearce (1979). It is found that the suggested value of Pearce coefficient 0.8 is reasonable for lower liquid flow rates but becomes insufficient for higher liquid flow rates. |
| doi_str_mv | 10.1016/j.ijmultiphaseflow.2009.11.010 |
| format | Article |
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mm internal diameter, 7
m long pipe and studying the time series of cross-sectional average void fractions and pressure gradient which were obtained simultaneously. With the aid of a bank of published data in which the pipe diameter is the range from 0.5 to 70
mm, the effect of pipe diameter on flow characteristics of two-phase flow is investigated from various aspects. Particularly, the work focuses on the periodic structures of two-phase flow. Average film thicknesses and the gas flow rate where slug/churn and churn/annular flow transitions occur all increase as the diameter of the pipe becomes larger. On the other hand, the pressure gradients, the frequencies of the periodic structures and the velocities of disturbance waves decrease. The velocity of disturbance waves has been used to test the model of Pearce (1979). It is found that the suggested value of Pearce coefficient 0.8 is reasonable for lower liquid flow rates but becomes insufficient for higher liquid flow rates.</description><identifier>ISSN: 0301-9322</identifier><identifier>EISSN: 1879-3533</identifier><identifier>DOI: 10.1016/j.ijmultiphaseflow.2009.11.010</identifier><identifier>CODEN: IJMFBP</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Air–water ; Annular flow ; Computational fluid dynamics ; Disturbances ; Exact sciences and technology ; Flow characteristics ; Flow structure ; Flows in ducts, channels, nozzles, and conduits ; Fluid dynamics ; Fundamental areas of phenomenology (including applications) ; Liquid flow ; Multiphase and particle-laden flows ; Nonhomogeneous flows ; Periodic structures ; Physics ; Pipe ; Pipe diameter ; Pressure gradients ; Vertical</subject><ispartof>International journal of multiphase flow, 2010-04, Vol.36 (4), p.303-313</ispartof><rights>2010</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c398t-519a9a2a1002496d61eda588c8fb46212a58f0c42eb8b8116347d6f94cbc2e6d3</citedby><cites>FETCH-LOGICAL-c398t-519a9a2a1002496d61eda588c8fb46212a58f0c42eb8b8116347d6f94cbc2e6d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0301932209001906$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,65309</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=22500076$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Kaji, R.</creatorcontrib><creatorcontrib>Azzopardi, B.J.</creatorcontrib><title>The effect of pipe diameter on the structure of gas/liquid flow in vertical pipes</title><title>International journal of multiphase flow</title><description>Experimental work on two-phase vertical upward flow was carried out using a 19
mm internal diameter, 7
m long pipe and studying the time series of cross-sectional average void fractions and pressure gradient which were obtained simultaneously. With the aid of a bank of published data in which the pipe diameter is the range from 0.5 to 70
mm, the effect of pipe diameter on flow characteristics of two-phase flow is investigated from various aspects. Particularly, the work focuses on the periodic structures of two-phase flow. Average film thicknesses and the gas flow rate where slug/churn and churn/annular flow transitions occur all increase as the diameter of the pipe becomes larger. On the other hand, the pressure gradients, the frequencies of the periodic structures and the velocities of disturbance waves decrease. The velocity of disturbance waves has been used to test the model of Pearce (1979). It is found that the suggested value of Pearce coefficient 0.8 is reasonable for lower liquid flow rates but becomes insufficient for higher liquid flow rates.</description><subject>Air–water</subject><subject>Annular flow</subject><subject>Computational fluid dynamics</subject><subject>Disturbances</subject><subject>Exact sciences and technology</subject><subject>Flow characteristics</subject><subject>Flow structure</subject><subject>Flows in ducts, channels, nozzles, and conduits</subject><subject>Fluid dynamics</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Liquid flow</subject><subject>Multiphase and particle-laden flows</subject><subject>Nonhomogeneous flows</subject><subject>Periodic structures</subject><subject>Physics</subject><subject>Pipe</subject><subject>Pipe diameter</subject><subject>Pressure gradients</subject><subject>Vertical</subject><issn>0301-9322</issn><issn>1879-3533</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNqNkE1LxDAQhoMouK7-h1zUU2smadP2Ioj4BYIIeg7ZdOJm6bY1SRX_vVl38eDJ0xDmyfsyDyFnwHJgIC9WuVutpy66cakD2m74zDljTQ6QM2B7ZAZ11WSiFGKfzJhgkDWC80NyFMKKMVZWhZiR55clUrQWTaSDpaMbkbZOrzGip0NPY1qH6CcTJ48b4k2Hi869T66lm0rqevqBPjqju5_f4ZgcWN0FPNnNOXm9vXm5vs8en-4erq8eMyOaOmYlNLrRXANjvGhkKwFbXda1qe2ikBx4elhmCo6LelEDSFFUrbRNYRaGo2zFnJxvc0c_vE8Yolq7YLDrdI_DFFRVikrIivNEXm5J44cQPFo1erfW_ksBUxuVaqX-qlQblQpAJZUp4HRXpUO603rdGxd-Uzgvk89KJu5-y2G6-8OhV8E47A22zifBqh3cfyu_AcvylME</recordid><startdate>20100401</startdate><enddate>20100401</enddate><creator>Kaji, R.</creator><creator>Azzopardi, B.J.</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>20100401</creationdate><title>The effect of pipe diameter on the structure of gas/liquid flow in vertical pipes</title><author>Kaji, R. ; Azzopardi, B.J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c398t-519a9a2a1002496d61eda588c8fb46212a58f0c42eb8b8116347d6f94cbc2e6d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Air–water</topic><topic>Annular flow</topic><topic>Computational fluid dynamics</topic><topic>Disturbances</topic><topic>Exact sciences and technology</topic><topic>Flow characteristics</topic><topic>Flow structure</topic><topic>Flows in ducts, channels, nozzles, and conduits</topic><topic>Fluid dynamics</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>Liquid flow</topic><topic>Multiphase and particle-laden flows</topic><topic>Nonhomogeneous flows</topic><topic>Periodic structures</topic><topic>Physics</topic><topic>Pipe</topic><topic>Pipe diameter</topic><topic>Pressure gradients</topic><topic>Vertical</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kaji, R.</creatorcontrib><creatorcontrib>Azzopardi, B.J.</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 multiphase flow</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kaji, R.</au><au>Azzopardi, B.J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The effect of pipe diameter on the structure of gas/liquid flow in vertical pipes</atitle><jtitle>International journal of multiphase flow</jtitle><date>2010-04-01</date><risdate>2010</risdate><volume>36</volume><issue>4</issue><spage>303</spage><epage>313</epage><pages>303-313</pages><issn>0301-9322</issn><eissn>1879-3533</eissn><coden>IJMFBP</coden><abstract>Experimental work on two-phase vertical upward flow was carried out using a 19
mm internal diameter, 7
m long pipe and studying the time series of cross-sectional average void fractions and pressure gradient which were obtained simultaneously. With the aid of a bank of published data in which the pipe diameter is the range from 0.5 to 70
mm, the effect of pipe diameter on flow characteristics of two-phase flow is investigated from various aspects. Particularly, the work focuses on the periodic structures of two-phase flow. Average film thicknesses and the gas flow rate where slug/churn and churn/annular flow transitions occur all increase as the diameter of the pipe becomes larger. On the other hand, the pressure gradients, the frequencies of the periodic structures and the velocities of disturbance waves decrease. The velocity of disturbance waves has been used to test the model of Pearce (1979). It is found that the suggested value of Pearce coefficient 0.8 is reasonable for lower liquid flow rates but becomes insufficient for higher liquid flow rates.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.ijmultiphaseflow.2009.11.010</doi><tpages>11</tpages></addata></record> |
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| identifier | ISSN: 0301-9322 |
| ispartof | International journal of multiphase flow, 2010-04, Vol.36 (4), p.303-313 |
| issn | 0301-9322 1879-3533 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Air–water Annular flow Computational fluid dynamics Disturbances Exact sciences and technology Flow characteristics Flow structure Flows in ducts, channels, nozzles, and conduits Fluid dynamics Fundamental areas of phenomenology (including applications) Liquid flow Multiphase and particle-laden flows Nonhomogeneous flows Periodic structures Physics Pipe Pipe diameter Pressure gradients Vertical |
| title | The effect of pipe diameter on the structure of gas/liquid flow in vertical pipes |
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