A Study on Plume Dispersion Characteristics of Two Discrete Plume Stacks for Negative Temperature Gradient Conditions
The dispersion of air pollutants emitted from industries has been studied ever since the dawn of industrialisation. The present work focuses on investigating the effect of negative atmospheric temperature gradient and the plume stack orientation of two individual equal-height stacks on the vertical...
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| Veröffentlicht in: | Environmental modeling & assessment 2021-06, Vol.26 (3), p.405-422 |
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| description | The dispersion of air pollutants emitted from industries has been studied ever since the dawn of industrialisation. The present work focuses on investigating the effect of negative atmospheric temperature gradient and the plume stack orientation of two individual equal-height stacks on the vertical rise and dispersion of the plume. The study carried out upon three-stack layout configurations namely inline, 45° and non-inline, separated by an inter-stack distance of 12 times the exit chimney diameter (12
D
) and 22 times the exit chimney diameter (22
D
) in each case over the two temperature gradients of −0.2 K/100 m and −0.5 K/100 m. The turbulence is modelled using realisable k-ε model, a model used in the FLUENT flow solver. In the case of the inline configuration, the upwind plume shields its downwind counterpart, which in turn allows for higher plume rise at a given temperature gradient. The plume oscillates more in the case of inline than 45° and non-inline cases. Also, for a temperature gradient of −0.5 K/100 m, the plumes oscillate violently in the vertical direction, mainly because, with the initial rise of the plume, cold air from higher altitudes moves down and forms a layer of lower temperature closer to the ground. The present study is important to highlight the plume dispersion characteristics under negative temperature gradient conditions. |
| doi_str_mv | 10.1007/s10666-020-09747-1 |
| format | Article |
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D
) and 22 times the exit chimney diameter (22
D
) in each case over the two temperature gradients of −0.2 K/100 m and −0.5 K/100 m. The turbulence is modelled using realisable k-ε model, a model used in the FLUENT flow solver. In the case of the inline configuration, the upwind plume shields its downwind counterpart, which in turn allows for higher plume rise at a given temperature gradient. The plume oscillates more in the case of inline than 45° and non-inline cases. Also, for a temperature gradient of −0.5 K/100 m, the plumes oscillate violently in the vertical direction, mainly because, with the initial rise of the plume, cold air from higher altitudes moves down and forms a layer of lower temperature closer to the ground. The present study is important to highlight the plume dispersion characteristics under negative temperature gradient conditions.</description><identifier>ISSN: 1420-2026</identifier><identifier>EISSN: 1573-2967</identifier><identifier>DOI: 10.1007/s10666-020-09747-1</identifier><language>eng</language><publisher>Cham: Springer International Publishing</publisher><subject>Aerodynamics ; Air pollution ; Air temperature ; Applications of Mathematics ; Atmospheric boundary layer ; Atmospheric temperature ; Computational fluid dynamics ; Configurations ; Dimensional analysis ; Dispersion ; Earth and Environmental Science ; Environment ; Low temperature ; Math. Appl. in Environmental Science ; Mathematical Modeling and Industrial Mathematics ; Nitrogen dioxide ; Numerical analysis ; Operations Research/Decision Theory ; Plumes ; Pollutants ; Reynolds number ; Stacks ; Temperature gradients ; Velocity</subject><ispartof>Environmental modeling & assessment, 2021-06, Vol.26 (3), p.405-422</ispartof><rights>The Author(s) 2021</rights><rights>COPYRIGHT 2021 Springer</rights><rights>The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c402t-f8cc17872f024784248ce1e40c9ecd630e3de90ecc1fd8eb6194897866497f933</citedby><cites>FETCH-LOGICAL-c402t-f8cc17872f024784248ce1e40c9ecd630e3de90ecc1fd8eb6194897866497f933</cites><orcidid>0000-0003-2991-3439</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/s10666-020-09747-1$$EPDF$$P50$$Gspringer$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10666-020-09747-1$$EHTML$$P50$$Gspringer$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Sivanandan, Hrishikesh</creatorcontrib><creatorcontrib>Kishore, V. Ratna</creatorcontrib><creatorcontrib>Goel, Mukesh</creatorcontrib><creatorcontrib>Asthana, Abhishek</creatorcontrib><title>A Study on Plume Dispersion Characteristics of Two Discrete Plume Stacks for Negative Temperature Gradient Conditions</title><title>Environmental modeling & assessment</title><addtitle>Environ Model Assess</addtitle><description>The dispersion of air pollutants emitted from industries has been studied ever since the dawn of industrialisation. The present work focuses on investigating the effect of negative atmospheric temperature gradient and the plume stack orientation of two individual equal-height stacks on the vertical rise and dispersion of the plume. The study carried out upon three-stack layout configurations namely inline, 45° and non-inline, separated by an inter-stack distance of 12 times the exit chimney diameter (12
D
) and 22 times the exit chimney diameter (22
D
) in each case over the two temperature gradients of −0.2 K/100 m and −0.5 K/100 m. The turbulence is modelled using realisable k-ε model, a model used in the FLUENT flow solver. In the case of the inline configuration, the upwind plume shields its downwind counterpart, which in turn allows for higher plume rise at a given temperature gradient. The plume oscillates more in the case of inline than 45° and non-inline cases. Also, for a temperature gradient of −0.5 K/100 m, the plumes oscillate violently in the vertical direction, mainly because, with the initial rise of the plume, cold air from higher altitudes moves down and forms a layer of lower temperature closer to the ground. The present study is important to highlight the plume dispersion characteristics under negative temperature gradient conditions.</description><subject>Aerodynamics</subject><subject>Air pollution</subject><subject>Air temperature</subject><subject>Applications of Mathematics</subject><subject>Atmospheric boundary layer</subject><subject>Atmospheric temperature</subject><subject>Computational fluid dynamics</subject><subject>Configurations</subject><subject>Dimensional analysis</subject><subject>Dispersion</subject><subject>Earth and Environmental Science</subject><subject>Environment</subject><subject>Low temperature</subject><subject>Math. Appl. in Environmental Science</subject><subject>Mathematical Modeling and Industrial Mathematics</subject><subject>Nitrogen dioxide</subject><subject>Numerical analysis</subject><subject>Operations Research/Decision Theory</subject><subject>Plumes</subject><subject>Pollutants</subject><subject>Reynolds number</subject><subject>Stacks</subject><subject>Temperature gradients</subject><subject>Velocity</subject><issn>1420-2026</issn><issn>1573-2967</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp9kV1vFCEUhidGE2v1D3hF4vXUA8PwcblZtZo01aTrNUHmsFJ3hxUYm_57T50m3jVcQOB5XiBv173lcMEB9PvKQSnVg4AerJa658-6Mz7qoRdW6ee0lnQkQKiX3atabwGIh_GsWzbspi3TPcsz-3ZYjsg-pHrCUhNtbH_64kPDkmpLobIc2e4uPxChYMNH4ab58KuymAu7xr1v6Q-yHR4pxLelILssfko4N7bN85QaBdfX3YvoDxXfPM7n3fdPH3fbz_3V18sv281VHySI1kcTAtdGiwhCaiOFNAE5SggWw6QGwGFCC0hUnAz-UNxKY7VRSlod7TCcd-_W3FPJvxeszd3mpcx0pROjMGqgbE3UxUrt_QFdmmNu9G0aEx5TyDPGRPsbzQerR6NHEsQqhJJrLRjdqaSjL_eOg3vow619OOrD_evDcZKGVaoEz3ss_9_yhPUXUgqOGA</recordid><startdate>20210601</startdate><enddate>20210601</enddate><creator>Sivanandan, Hrishikesh</creator><creator>Kishore, V. 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Ratna</au><au>Goel, Mukesh</au><au>Asthana, Abhishek</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A Study on Plume Dispersion Characteristics of Two Discrete Plume Stacks for Negative Temperature Gradient Conditions</atitle><jtitle>Environmental modeling & assessment</jtitle><stitle>Environ Model Assess</stitle><date>2021-06-01</date><risdate>2021</risdate><volume>26</volume><issue>3</issue><spage>405</spage><epage>422</epage><pages>405-422</pages><issn>1420-2026</issn><eissn>1573-2967</eissn><abstract>The dispersion of air pollutants emitted from industries has been studied ever since the dawn of industrialisation. The present work focuses on investigating the effect of negative atmospheric temperature gradient and the plume stack orientation of two individual equal-height stacks on the vertical rise and dispersion of the plume. The study carried out upon three-stack layout configurations namely inline, 45° and non-inline, separated by an inter-stack distance of 12 times the exit chimney diameter (12
D
) and 22 times the exit chimney diameter (22
D
) in each case over the two temperature gradients of −0.2 K/100 m and −0.5 K/100 m. The turbulence is modelled using realisable k-ε model, a model used in the FLUENT flow solver. In the case of the inline configuration, the upwind plume shields its downwind counterpart, which in turn allows for higher plume rise at a given temperature gradient. The plume oscillates more in the case of inline than 45° and non-inline cases. Also, for a temperature gradient of −0.5 K/100 m, the plumes oscillate violently in the vertical direction, mainly because, with the initial rise of the plume, cold air from higher altitudes moves down and forms a layer of lower temperature closer to the ground. The present study is important to highlight the plume dispersion characteristics under negative temperature gradient conditions.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><doi>10.1007/s10666-020-09747-1</doi><tpages>18</tpages><orcidid>https://orcid.org/0000-0003-2991-3439</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Aerodynamics Air pollution Air temperature Applications of Mathematics Atmospheric boundary layer Atmospheric temperature Computational fluid dynamics Configurations Dimensional analysis Dispersion Earth and Environmental Science Environment Low temperature Math. Appl. in Environmental Science Mathematical Modeling and Industrial Mathematics Nitrogen dioxide Numerical analysis Operations Research/Decision Theory Plumes Pollutants Reynolds number Stacks Temperature gradients Velocity |
| title | A Study on Plume Dispersion Characteristics of Two Discrete Plume Stacks for Negative Temperature Gradient Conditions |
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