Effect of Forced Convection on the Combustion Chemistry of PMMA Spheres in Microgravity
The influence of the forced convection rate on the chemical structure of a polymethyl methacrylate (PMMA) flame in an oxidizer flow under microgravity conditions was studied using numerical modeling. Gas flow around a solid sphere was simulated using the full Navier–Stokes equations for a multicompo...
Gespeichert in:
| Veröffentlicht in: | Microgravity science and technology 2024-07, Vol.36 (4), p.44, Article 44 |
|---|---|
| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | 4 |
| container_start_page | 44 |
| container_title | Microgravity science and technology |
| container_volume | 36 |
| creator | Bolshova, Tatyana Shmakov, Andrey Shvartsberg, Vladimir |
| description | The influence of the forced convection rate on the chemical structure of a polymethyl methacrylate (PMMA) flame in an oxidizer flow under microgravity conditions was studied using numerical modeling. Gas flow around a solid sphere was simulated using the full Navier–Stokes equations for a multicomponent mixture. A multistep chemical kinetic mechanism was considered in the gas phase. The heat transfer and radiation in both the condensed and gas phases were considered in the modeling. On the PMMA surface, the pyrolysis reaction leading to the transformation of fuel from the condensed phase to the gas phase is specified. The forced convection speed varied in the range from 3 to 20 cm/s. Analysis of CO
2
concentration fields near the burning surface under microgravity conditions showed that the maximum CO
2
concentration is observed in the downstream zone. The width of the flame zone and its chemical structure depend on the intensity of forced convection. The width of the flame against the flow decreases, and the maximum CO concentration increases as the forced convection rate increases. Analysis of the rates of fuel consumption reactions showed that at a low convection speed (v
st
=3 cm/s), the reaction with the H radical, which has the highest diffusion coefficient, plays a crucial role in MMA oxidation. |
| doi_str_mv | 10.1007/s12217-024-10128-6 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_3079935401</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>3079935401</sourcerecordid><originalsourceid>FETCH-LOGICAL-c200t-924c9351db090154fcdfbd0166fa780e62f3bde962ba68c57fdcd4192ee317923</originalsourceid><addsrcrecordid>eNp9kF9LwzAUxYMoOKdfwKeAz9V70zRtHkfZVNhQUPExtPmzdbh2Jp2wb2-2CvokXMjlcH7nhkPINcItAuR3ARnDPAHGEwRkRSJOyAiLPEuAS376Zz8nFyGsAQRDzkbkfeqc1T3tHJ11XltDy679ikrTtTROv7JR2dS7cFTKld00off7A_C8WEzoy3ZlvQ20aemi0b5b-uqr6feX5MxVH8Fe_bxj8jabvpYPyfzp_rGczBPNAPpEMq5lmqGpQQJm3GnjagMohKvyAqxgLq2NlYLVlSh0ljujDUfJrE0xlywdk5shd-u7z50NvVp3O9_GkyqFXMZsDhhdbHDFD4bgrVNb32wqv1cI6lCgGgpUsUB1LFCJCKUDFKK5XVr_G_0P9Q3ZGnLJ</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>3079935401</pqid></control><display><type>article</type><title>Effect of Forced Convection on the Combustion Chemistry of PMMA Spheres in Microgravity</title><source>SpringerLink Journals - AutoHoldings</source><creator>Bolshova, Tatyana ; Shmakov, Andrey ; Shvartsberg, Vladimir</creator><creatorcontrib>Bolshova, Tatyana ; Shmakov, Andrey ; Shvartsberg, Vladimir</creatorcontrib><description>The influence of the forced convection rate on the chemical structure of a polymethyl methacrylate (PMMA) flame in an oxidizer flow under microgravity conditions was studied using numerical modeling. Gas flow around a solid sphere was simulated using the full Navier–Stokes equations for a multicomponent mixture. A multistep chemical kinetic mechanism was considered in the gas phase. The heat transfer and radiation in both the condensed and gas phases were considered in the modeling. On the PMMA surface, the pyrolysis reaction leading to the transformation of fuel from the condensed phase to the gas phase is specified. The forced convection speed varied in the range from 3 to 20 cm/s. Analysis of CO
2
concentration fields near the burning surface under microgravity conditions showed that the maximum CO
2
concentration is observed in the downstream zone. The width of the flame zone and its chemical structure depend on the intensity of forced convection. The width of the flame against the flow decreases, and the maximum CO concentration increases as the forced convection rate increases. Analysis of the rates of fuel consumption reactions showed that at a low convection speed (v
st
=3 cm/s), the reaction with the H radical, which has the highest diffusion coefficient, plays a crucial role in MMA oxidation.</description><identifier>ISSN: 1875-0494</identifier><identifier>ISSN: 0938-0108</identifier><identifier>EISSN: 1875-0494</identifier><identifier>DOI: 10.1007/s12217-024-10128-6</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Aerospace Technology and Astronautics ; Carbon dioxide ; Carbon dioxide concentration ; Chemical reactions ; Classical and Continuum Physics ; Combustion chemistry ; Convection ; Diffusion coefficient ; Diffusion rate ; Energy consumption ; Engineering ; Forced convection ; Fuel consumption ; Gas flow ; Heat transfer ; Microgravity ; Navier-Stokes equations ; Numerical models ; Oxidation ; Oxidizing agents ; Polymethyl methacrylate ; Pyrolysis ; Space Exploration and Astronautics ; Space Sciences (including Extraterrestrial Physics ; Vapor phases ; Weightlessness</subject><ispartof>Microgravity science and technology, 2024-07, Vol.36 (4), p.44, Article 44</ispartof><rights>The Author(s), under exclusive licence to Springer Nature B.V. 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c200t-924c9351db090154fcdfbd0166fa780e62f3bde962ba68c57fdcd4192ee317923</cites><orcidid>0000-0002-5481-4371</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/s12217-024-10128-6$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s12217-024-10128-6$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,778,782,27907,27908,41471,42540,51302</link.rule.ids></links><search><creatorcontrib>Bolshova, Tatyana</creatorcontrib><creatorcontrib>Shmakov, Andrey</creatorcontrib><creatorcontrib>Shvartsberg, Vladimir</creatorcontrib><title>Effect of Forced Convection on the Combustion Chemistry of PMMA Spheres in Microgravity</title><title>Microgravity science and technology</title><addtitle>Microgravity Sci. Technol</addtitle><description>The influence of the forced convection rate on the chemical structure of a polymethyl methacrylate (PMMA) flame in an oxidizer flow under microgravity conditions was studied using numerical modeling. Gas flow around a solid sphere was simulated using the full Navier–Stokes equations for a multicomponent mixture. A multistep chemical kinetic mechanism was considered in the gas phase. The heat transfer and radiation in both the condensed and gas phases were considered in the modeling. On the PMMA surface, the pyrolysis reaction leading to the transformation of fuel from the condensed phase to the gas phase is specified. The forced convection speed varied in the range from 3 to 20 cm/s. Analysis of CO
2
concentration fields near the burning surface under microgravity conditions showed that the maximum CO
2
concentration is observed in the downstream zone. The width of the flame zone and its chemical structure depend on the intensity of forced convection. The width of the flame against the flow decreases, and the maximum CO concentration increases as the forced convection rate increases. Analysis of the rates of fuel consumption reactions showed that at a low convection speed (v
st
=3 cm/s), the reaction with the H radical, which has the highest diffusion coefficient, plays a crucial role in MMA oxidation.</description><subject>Aerospace Technology and Astronautics</subject><subject>Carbon dioxide</subject><subject>Carbon dioxide concentration</subject><subject>Chemical reactions</subject><subject>Classical and Continuum Physics</subject><subject>Combustion chemistry</subject><subject>Convection</subject><subject>Diffusion coefficient</subject><subject>Diffusion rate</subject><subject>Energy consumption</subject><subject>Engineering</subject><subject>Forced convection</subject><subject>Fuel consumption</subject><subject>Gas flow</subject><subject>Heat transfer</subject><subject>Microgravity</subject><subject>Navier-Stokes equations</subject><subject>Numerical models</subject><subject>Oxidation</subject><subject>Oxidizing agents</subject><subject>Polymethyl methacrylate</subject><subject>Pyrolysis</subject><subject>Space Exploration and Astronautics</subject><subject>Space Sciences (including Extraterrestrial Physics</subject><subject>Vapor phases</subject><subject>Weightlessness</subject><issn>1875-0494</issn><issn>0938-0108</issn><issn>1875-0494</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNp9kF9LwzAUxYMoOKdfwKeAz9V70zRtHkfZVNhQUPExtPmzdbh2Jp2wb2-2CvokXMjlcH7nhkPINcItAuR3ARnDPAHGEwRkRSJOyAiLPEuAS376Zz8nFyGsAQRDzkbkfeqc1T3tHJ11XltDy679ikrTtTROv7JR2dS7cFTKld00off7A_C8WEzoy3ZlvQ20aemi0b5b-uqr6feX5MxVH8Fe_bxj8jabvpYPyfzp_rGczBPNAPpEMq5lmqGpQQJm3GnjagMohKvyAqxgLq2NlYLVlSh0ljujDUfJrE0xlywdk5shd-u7z50NvVp3O9_GkyqFXMZsDhhdbHDFD4bgrVNb32wqv1cI6lCgGgpUsUB1LFCJCKUDFKK5XVr_G_0P9Q3ZGnLJ</recordid><startdate>20240713</startdate><enddate>20240713</enddate><creator>Bolshova, Tatyana</creator><creator>Shmakov, Andrey</creator><creator>Shvartsberg, Vladimir</creator><general>Springer Netherlands</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>7TG</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>K9.</scope><scope>KL.</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-5481-4371</orcidid></search><sort><creationdate>20240713</creationdate><title>Effect of Forced Convection on the Combustion Chemistry of PMMA Spheres in Microgravity</title><author>Bolshova, Tatyana ; Shmakov, Andrey ; Shvartsberg, Vladimir</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c200t-924c9351db090154fcdfbd0166fa780e62f3bde962ba68c57fdcd4192ee317923</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Aerospace Technology and Astronautics</topic><topic>Carbon dioxide</topic><topic>Carbon dioxide concentration</topic><topic>Chemical reactions</topic><topic>Classical and Continuum Physics</topic><topic>Combustion chemistry</topic><topic>Convection</topic><topic>Diffusion coefficient</topic><topic>Diffusion rate</topic><topic>Energy consumption</topic><topic>Engineering</topic><topic>Forced convection</topic><topic>Fuel consumption</topic><topic>Gas flow</topic><topic>Heat transfer</topic><topic>Microgravity</topic><topic>Navier-Stokes equations</topic><topic>Numerical models</topic><topic>Oxidation</topic><topic>Oxidizing agents</topic><topic>Polymethyl methacrylate</topic><topic>Pyrolysis</topic><topic>Space Exploration and Astronautics</topic><topic>Space Sciences (including Extraterrestrial Physics</topic><topic>Vapor phases</topic><topic>Weightlessness</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bolshova, Tatyana</creatorcontrib><creatorcontrib>Shmakov, Andrey</creatorcontrib><creatorcontrib>Shvartsberg, Vladimir</creatorcontrib><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Microgravity science and technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bolshova, Tatyana</au><au>Shmakov, Andrey</au><au>Shvartsberg, Vladimir</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Forced Convection on the Combustion Chemistry of PMMA Spheres in Microgravity</atitle><jtitle>Microgravity science and technology</jtitle><stitle>Microgravity Sci. Technol</stitle><date>2024-07-13</date><risdate>2024</risdate><volume>36</volume><issue>4</issue><spage>44</spage><pages>44-</pages><artnum>44</artnum><issn>1875-0494</issn><issn>0938-0108</issn><eissn>1875-0494</eissn><abstract>The influence of the forced convection rate on the chemical structure of a polymethyl methacrylate (PMMA) flame in an oxidizer flow under microgravity conditions was studied using numerical modeling. Gas flow around a solid sphere was simulated using the full Navier–Stokes equations for a multicomponent mixture. A multistep chemical kinetic mechanism was considered in the gas phase. The heat transfer and radiation in both the condensed and gas phases were considered in the modeling. On the PMMA surface, the pyrolysis reaction leading to the transformation of fuel from the condensed phase to the gas phase is specified. The forced convection speed varied in the range from 3 to 20 cm/s. Analysis of CO
2
concentration fields near the burning surface under microgravity conditions showed that the maximum CO
2
concentration is observed in the downstream zone. The width of the flame zone and its chemical structure depend on the intensity of forced convection. The width of the flame against the flow decreases, and the maximum CO concentration increases as the forced convection rate increases. Analysis of the rates of fuel consumption reactions showed that at a low convection speed (v
st
=3 cm/s), the reaction with the H radical, which has the highest diffusion coefficient, plays a crucial role in MMA oxidation.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s12217-024-10128-6</doi><orcidid>https://orcid.org/0000-0002-5481-4371</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1875-0494 |
| ispartof | Microgravity science and technology, 2024-07, Vol.36 (4), p.44, Article 44 |
| issn | 1875-0494 0938-0108 1875-0494 |
| language | eng |
| recordid | cdi_proquest_journals_3079935401 |
| source | SpringerLink Journals - AutoHoldings |
| subjects | Aerospace Technology and Astronautics Carbon dioxide Carbon dioxide concentration Chemical reactions Classical and Continuum Physics Combustion chemistry Convection Diffusion coefficient Diffusion rate Energy consumption Engineering Forced convection Fuel consumption Gas flow Heat transfer Microgravity Navier-Stokes equations Numerical models Oxidation Oxidizing agents Polymethyl methacrylate Pyrolysis Space Exploration and Astronautics Space Sciences (including Extraterrestrial Physics Vapor phases Weightlessness |
| title | Effect of Forced Convection on the Combustion Chemistry of PMMA Spheres in Microgravity |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-16T18%3A11%3A01IST&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=Effect%20of%20Forced%20Convection%20on%20the%20Combustion%20Chemistry%20of%20PMMA%20Spheres%20in%20Microgravity&rft.jtitle=Microgravity%20science%20and%20technology&rft.au=Bolshova,%20Tatyana&rft.date=2024-07-13&rft.volume=36&rft.issue=4&rft.spage=44&rft.pages=44-&rft.artnum=44&rft.issn=1875-0494&rft.eissn=1875-0494&rft_id=info:doi/10.1007/s12217-024-10128-6&rft_dat=%3Cproquest_cross%3E3079935401%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=3079935401&rft_id=info:pmid/&rfr_iscdi=true |