Mass transfer characteristics for CO^sub 2^ absorption in nanoabsorbents
In this work, an improved VOF-PLIC model is developed to simulate 3D bubble behavior and to analyze the mass transfer characteristics for CO2 absorption in pure methanol and methanol with Al2O3 nanoparticles. The lower bound boundary value of CO2 volume fraction(αg) is redefined according to the inf...
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| Veröffentlicht in: | International journal of heat and mass transfer 2019-02, Vol.129, p.650 |
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| creator | Li, Lirong Lim, Hwan Suk Kang, Yong Tae |
| description | In this work, an improved VOF-PLIC model is developed to simulate 3D bubble behavior and to analyze the mass transfer characteristics for CO2 absorption in pure methanol and methanol with Al2O3 nanoparticles. The lower bound boundary value of CO2 volume fraction(αg) is redefined according to the influence of αg on bubble shape and diameter as well as the interfacial area between gas and liquid. In addition, a reasonable drag force is added into the momentum equation using UDF code based on the assumption that the drag force only exists in liquid phase. It is found that the level lines of bubbles with the αg value of 0.05 agree well with the real case, and the drag force has significant influence on the bubble behavior and mass transfer characteristics. The velocity contours and pressure gradients around the bubble are proposed to analyze the influence of drag force on the mass transfer characteristics. Also, the influence of the Al2O3 nanoparticles on the mass transfer enhancement is studied, and the results show that the dispersed particles can significantly enhance the mass transfer by increasing the gas–liquid interfacial surface renewal frequency. |
| doi_str_mv | 10.1016/j.ijheatmasstransfer.2018.10.005 |
| format | Article |
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The lower bound boundary value of CO2 volume fraction(αg) is redefined according to the influence of αg on bubble shape and diameter as well as the interfacial area between gas and liquid. In addition, a reasonable drag force is added into the momentum equation using UDF code based on the assumption that the drag force only exists in liquid phase. It is found that the level lines of bubbles with the αg value of 0.05 agree well with the real case, and the drag force has significant influence on the bubble behavior and mass transfer characteristics. The velocity contours and pressure gradients around the bubble are proposed to analyze the influence of drag force on the mass transfer characteristics. Also, the influence of the Al2O3 nanoparticles on the mass transfer enhancement is studied, and the results show that the dispersed particles can significantly enhance the mass transfer by increasing the gas–liquid interfacial surface renewal frequency.</description><identifier>ISSN: 0017-9310</identifier><identifier>EISSN: 1879-2189</identifier><identifier>DOI: 10.1016/j.ijheatmasstransfer.2018.10.005</identifier><language>eng</language><publisher>Oxford: Elsevier BV</publisher><subject>Absorption ; Aluminum oxide ; Bubbles ; Carbon dioxide ; Computer simulation ; Drag ; Fluid dynamics ; Liquid phases ; Lower bounds ; Mass transfer ; Methanol ; Nanoparticles ; Pressure gradients ; Three dimensional models</subject><ispartof>International journal of heat and mass transfer, 2019-02, Vol.129, p.650</ispartof><rights>Copyright Elsevier BV Feb 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,781,785,27929,27930</link.rule.ids></links><search><creatorcontrib>Li, Lirong</creatorcontrib><creatorcontrib>Lim, Hwan Suk</creatorcontrib><creatorcontrib>Kang, Yong Tae</creatorcontrib><title>Mass transfer characteristics for CO^sub 2^ absorption in nanoabsorbents</title><title>International journal of heat and mass transfer</title><description>In this work, an improved VOF-PLIC model is developed to simulate 3D bubble behavior and to analyze the mass transfer characteristics for CO2 absorption in pure methanol and methanol with Al2O3 nanoparticles. The lower bound boundary value of CO2 volume fraction(αg) is redefined according to the influence of αg on bubble shape and diameter as well as the interfacial area between gas and liquid. In addition, a reasonable drag force is added into the momentum equation using UDF code based on the assumption that the drag force only exists in liquid phase. It is found that the level lines of bubbles with the αg value of 0.05 agree well with the real case, and the drag force has significant influence on the bubble behavior and mass transfer characteristics. The velocity contours and pressure gradients around the bubble are proposed to analyze the influence of drag force on the mass transfer characteristics. Also, the influence of the Al2O3 nanoparticles on the mass transfer enhancement is studied, and the results show that the dispersed particles can significantly enhance the mass transfer by increasing the gas–liquid interfacial surface renewal frequency.</description><subject>Absorption</subject><subject>Aluminum oxide</subject><subject>Bubbles</subject><subject>Carbon dioxide</subject><subject>Computer simulation</subject><subject>Drag</subject><subject>Fluid dynamics</subject><subject>Liquid phases</subject><subject>Lower bounds</subject><subject>Mass transfer</subject><subject>Methanol</subject><subject>Nanoparticles</subject><subject>Pressure gradients</subject><subject>Three dimensional models</subject><issn>0017-9310</issn><issn>1879-2189</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNqNjMsKwjAURIMoWB__EHDjpvXevrsuihtx41pJS0pTNKm56f9bRfeuhpkzM4xtEQIETHddoLpWCvcQRM4KTY20QQiYjzgASCbMwzwr_BDzYso8AMz8IkKYswVR97YQpx47nsY9_x3wuhVW1E5aRU7VxBtjeXm-0lDx8MpFRcb2ThnNleZaaPNJKqkdrdisEXeS668u2eawv5RHv7fmOUhyt84MVo_oFmKaQBwXWRL913oBEgNJww</recordid><startdate>20190201</startdate><enddate>20190201</enddate><creator>Li, Lirong</creator><creator>Lim, Hwan Suk</creator><creator>Kang, Yong Tae</creator><general>Elsevier BV</general><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20190201</creationdate><title>Mass transfer characteristics for CO^sub 2^ absorption in nanoabsorbents</title><author>Li, Lirong ; Lim, Hwan Suk ; Kang, Yong Tae</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_journals_21650449753</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Absorption</topic><topic>Aluminum oxide</topic><topic>Bubbles</topic><topic>Carbon dioxide</topic><topic>Computer simulation</topic><topic>Drag</topic><topic>Fluid dynamics</topic><topic>Liquid phases</topic><topic>Lower bounds</topic><topic>Mass transfer</topic><topic>Methanol</topic><topic>Nanoparticles</topic><topic>Pressure gradients</topic><topic>Three dimensional models</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Lirong</creatorcontrib><creatorcontrib>Lim, Hwan Suk</creatorcontrib><creatorcontrib>Kang, Yong Tae</creatorcontrib><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>Li, Lirong</au><au>Lim, Hwan Suk</au><au>Kang, Yong Tae</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mass transfer characteristics for CO^sub 2^ absorption in nanoabsorbents</atitle><jtitle>International journal of heat and mass transfer</jtitle><date>2019-02-01</date><risdate>2019</risdate><volume>129</volume><spage>650</spage><pages>650-</pages><issn>0017-9310</issn><eissn>1879-2189</eissn><abstract>In this work, an improved VOF-PLIC model is developed to simulate 3D bubble behavior and to analyze the mass transfer characteristics for CO2 absorption in pure methanol and methanol with Al2O3 nanoparticles. The lower bound boundary value of CO2 volume fraction(αg) is redefined according to the influence of αg on bubble shape and diameter as well as the interfacial area between gas and liquid. In addition, a reasonable drag force is added into the momentum equation using UDF code based on the assumption that the drag force only exists in liquid phase. It is found that the level lines of bubbles with the αg value of 0.05 agree well with the real case, and the drag force has significant influence on the bubble behavior and mass transfer characteristics. The velocity contours and pressure gradients around the bubble are proposed to analyze the influence of drag force on the mass transfer characteristics. Also, the influence of the Al2O3 nanoparticles on the mass transfer enhancement is studied, and the results show that the dispersed particles can significantly enhance the mass transfer by increasing the gas–liquid interfacial surface renewal frequency.</abstract><cop>Oxford</cop><pub>Elsevier BV</pub><doi>10.1016/j.ijheatmasstransfer.2018.10.005</doi></addata></record> |
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| ispartof | International journal of heat and mass transfer, 2019-02, Vol.129, p.650 |
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| language | eng |
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| source | Access via ScienceDirect (Elsevier) |
| subjects | Absorption Aluminum oxide Bubbles Carbon dioxide Computer simulation Drag Fluid dynamics Liquid phases Lower bounds Mass transfer Methanol Nanoparticles Pressure gradients Three dimensional models |
| title | Mass transfer characteristics for CO^sub 2^ absorption in nanoabsorbents |
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