On the modeling of scalar mixing timescale in filtered density function simulation of turbulent premixed flames
A new closure of the scalar mixing timescale is formulated to enhance the predictability of large eddy simulation (LES)/filtered density function (FDF) simulations for turbulent premixed flames. Specifically, the new model integrates a dynamic closure for turbulence-induced mixing with a closure for...
Gespeichert in:
Veröffentlicht in: | Physics of fluids (1994) 2020-11, Vol.32 (11) |
---|---|
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 | 11 |
container_start_page | |
container_title | Physics of fluids (1994) |
container_volume | 32 |
creator | Yang, Tianwei Xie, Qing Zhou, Hua Ren, Zhuyin |
description | A new closure of the scalar mixing timescale is formulated to enhance the predictability of large eddy simulation (LES)/filtered density function (FDF) simulations for turbulent premixed flames. Specifically, the new model integrates a dynamic closure for turbulence-induced mixing with a closure for reaction-enhanced mixing, such that the model explicitly accounts for the subgrid mixing due to turbulence and reaction. The model adaptively adjusts the relative contribution from these two aspects according to the local state of combustion and requires no tuning for the mixing rate parameter (CM). To evaluate the model performance, LES/FDF simulations are carried out for the Sydney piloted premixed jet burner flames PM1-50 and PM1-150. Compared with the constant CM model with the baseline CM = 2, the proposed model notably improved the prediction of the overall combustion progress of both flames. The relative importance of the reaction-enhanced mixing in comparison with the turbulence-induced mixing is further investigated. For flame PM1-50, the reaction-enhanced mixing has a prominent impact throughout the combustion progress, resulting in a large variation in CM in the progress variable space. This illustrates the advantage of the proposed model for the flame close to the flamelet regime. For flame PM1-150, the variation in CM during the combustion progress is relatively small owing to the relatively weak reaction-enhanced mixing compared to PM1-50. However, this desired CM is much larger than the order of unity. Therefore, the proposed model also has its advantage for the flame close to the broken-reaction zones regime. |
doi_str_mv | 10.1063/5.0028826 |
format | Article |
fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_crossref_primary_10_1063_5_0028826</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2463271816</sourcerecordid><originalsourceid>FETCH-LOGICAL-c292t-11681dc1721c141bd73f4282ba99fc38d181dbb0e126775873cbbe50359f5faf3</originalsourceid><addsrcrecordid>eNp9kEtLAzEQgIMoWKsH_0HAk8LWPLrJ7lGKLyj0oueQzSaakk1qkgX77822PXuaYeabb5gB4BajBUaMPtYLhEjTEHYGZhg1bcUZY-dTzlHFGMWX4CqlLUKItoTNQNh4mL81HEKvnfVfMBiYlHQywsH-ToVsBz1VNLQeGuuyjrqHvfbJ5j00o1fZBg-THUYnD2lR5DF2o9M-w13URVQmjJNFdA0ujHRJ35ziHHy-PH-s3qr15vV99bSuFGlJrjBmDe4V5gQrvMRdz6lZkoZ0sm2Nok2PS7vrkMaEcV43nKqu0zWidWtqIw2dg7ujdxfDz6hTFtswRl9WCrJklPAiYIW6P1IqhpSiNmIX7SDjXmAkpn-KWpz-WdiHI5uUzYdD_4H_ANnzdiM</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2463271816</pqid></control><display><type>article</type><title>On the modeling of scalar mixing timescale in filtered density function simulation of turbulent premixed flames</title><source>AIP Journals Complete</source><source>Alma/SFX Local Collection</source><creator>Yang, Tianwei ; Xie, Qing ; Zhou, Hua ; Ren, Zhuyin</creator><creatorcontrib>Yang, Tianwei ; Xie, Qing ; Zhou, Hua ; Ren, Zhuyin</creatorcontrib><description>A new closure of the scalar mixing timescale is formulated to enhance the predictability of large eddy simulation (LES)/filtered density function (FDF) simulations for turbulent premixed flames. Specifically, the new model integrates a dynamic closure for turbulence-induced mixing with a closure for reaction-enhanced mixing, such that the model explicitly accounts for the subgrid mixing due to turbulence and reaction. The model adaptively adjusts the relative contribution from these two aspects according to the local state of combustion and requires no tuning for the mixing rate parameter (CM). To evaluate the model performance, LES/FDF simulations are carried out for the Sydney piloted premixed jet burner flames PM1-50 and PM1-150. Compared with the constant CM model with the baseline CM = 2, the proposed model notably improved the prediction of the overall combustion progress of both flames. The relative importance of the reaction-enhanced mixing in comparison with the turbulence-induced mixing is further investigated. For flame PM1-50, the reaction-enhanced mixing has a prominent impact throughout the combustion progress, resulting in a large variation in CM in the progress variable space. This illustrates the advantage of the proposed model for the flame close to the flamelet regime. For flame PM1-150, the variation in CM during the combustion progress is relatively small owing to the relatively weak reaction-enhanced mixing compared to PM1-50. However, this desired CM is much larger than the order of unity. Therefore, the proposed model also has its advantage for the flame close to the broken-reaction zones regime.</description><identifier>ISSN: 1070-6631</identifier><identifier>EISSN: 1089-7666</identifier><identifier>DOI: 10.1063/5.0028826</identifier><identifier>CODEN: PHFLE6</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Closures ; Combustion ; Density ; Fluid dynamics ; Large eddy simulation ; Physics ; Premixed flames ; Time ; Turbulence</subject><ispartof>Physics of fluids (1994), 2020-11, Vol.32 (11)</ispartof><rights>Author(s)</rights><rights>2020 Author(s). Published under license by AIP Publishing.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c292t-11681dc1721c141bd73f4282ba99fc38d181dbb0e126775873cbbe50359f5faf3</citedby><cites>FETCH-LOGICAL-c292t-11681dc1721c141bd73f4282ba99fc38d181dbb0e126775873cbbe50359f5faf3</cites><orcidid>0000-0003-1994-6448 ; 0000-0002-0070-5014 ; 0000-0003-4200-3368</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,794,4512,27924,27925</link.rule.ids></links><search><creatorcontrib>Yang, Tianwei</creatorcontrib><creatorcontrib>Xie, Qing</creatorcontrib><creatorcontrib>Zhou, Hua</creatorcontrib><creatorcontrib>Ren, Zhuyin</creatorcontrib><title>On the modeling of scalar mixing timescale in filtered density function simulation of turbulent premixed flames</title><title>Physics of fluids (1994)</title><description>A new closure of the scalar mixing timescale is formulated to enhance the predictability of large eddy simulation (LES)/filtered density function (FDF) simulations for turbulent premixed flames. Specifically, the new model integrates a dynamic closure for turbulence-induced mixing with a closure for reaction-enhanced mixing, such that the model explicitly accounts for the subgrid mixing due to turbulence and reaction. The model adaptively adjusts the relative contribution from these two aspects according to the local state of combustion and requires no tuning for the mixing rate parameter (CM). To evaluate the model performance, LES/FDF simulations are carried out for the Sydney piloted premixed jet burner flames PM1-50 and PM1-150. Compared with the constant CM model with the baseline CM = 2, the proposed model notably improved the prediction of the overall combustion progress of both flames. The relative importance of the reaction-enhanced mixing in comparison with the turbulence-induced mixing is further investigated. For flame PM1-50, the reaction-enhanced mixing has a prominent impact throughout the combustion progress, resulting in a large variation in CM in the progress variable space. This illustrates the advantage of the proposed model for the flame close to the flamelet regime. For flame PM1-150, the variation in CM during the combustion progress is relatively small owing to the relatively weak reaction-enhanced mixing compared to PM1-50. However, this desired CM is much larger than the order of unity. Therefore, the proposed model also has its advantage for the flame close to the broken-reaction zones regime.</description><subject>Closures</subject><subject>Combustion</subject><subject>Density</subject><subject>Fluid dynamics</subject><subject>Large eddy simulation</subject><subject>Physics</subject><subject>Premixed flames</subject><subject>Time</subject><subject>Turbulence</subject><issn>1070-6631</issn><issn>1089-7666</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLAzEQgIMoWKsH_0HAk8LWPLrJ7lGKLyj0oueQzSaakk1qkgX77822PXuaYeabb5gB4BajBUaMPtYLhEjTEHYGZhg1bcUZY-dTzlHFGMWX4CqlLUKItoTNQNh4mL81HEKvnfVfMBiYlHQywsH-ToVsBz1VNLQeGuuyjrqHvfbJ5j00o1fZBg-THUYnD2lR5DF2o9M-w13URVQmjJNFdA0ujHRJ35ziHHy-PH-s3qr15vV99bSuFGlJrjBmDe4V5gQrvMRdz6lZkoZ0sm2Nok2PS7vrkMaEcV43nKqu0zWidWtqIw2dg7ujdxfDz6hTFtswRl9WCrJklPAiYIW6P1IqhpSiNmIX7SDjXmAkpn-KWpz-WdiHI5uUzYdD_4H_ANnzdiM</recordid><startdate>20201101</startdate><enddate>20201101</enddate><creator>Yang, Tianwei</creator><creator>Xie, Qing</creator><creator>Zhou, Hua</creator><creator>Ren, Zhuyin</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0003-1994-6448</orcidid><orcidid>https://orcid.org/0000-0002-0070-5014</orcidid><orcidid>https://orcid.org/0000-0003-4200-3368</orcidid></search><sort><creationdate>20201101</creationdate><title>On the modeling of scalar mixing timescale in filtered density function simulation of turbulent premixed flames</title><author>Yang, Tianwei ; Xie, Qing ; Zhou, Hua ; Ren, Zhuyin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c292t-11681dc1721c141bd73f4282ba99fc38d181dbb0e126775873cbbe50359f5faf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Closures</topic><topic>Combustion</topic><topic>Density</topic><topic>Fluid dynamics</topic><topic>Large eddy simulation</topic><topic>Physics</topic><topic>Premixed flames</topic><topic>Time</topic><topic>Turbulence</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yang, Tianwei</creatorcontrib><creatorcontrib>Xie, Qing</creatorcontrib><creatorcontrib>Zhou, Hua</creatorcontrib><creatorcontrib>Ren, Zhuyin</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physics of fluids (1994)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yang, Tianwei</au><au>Xie, Qing</au><au>Zhou, Hua</au><au>Ren, Zhuyin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>On the modeling of scalar mixing timescale in filtered density function simulation of turbulent premixed flames</atitle><jtitle>Physics of fluids (1994)</jtitle><date>2020-11-01</date><risdate>2020</risdate><volume>32</volume><issue>11</issue><issn>1070-6631</issn><eissn>1089-7666</eissn><coden>PHFLE6</coden><abstract>A new closure of the scalar mixing timescale is formulated to enhance the predictability of large eddy simulation (LES)/filtered density function (FDF) simulations for turbulent premixed flames. Specifically, the new model integrates a dynamic closure for turbulence-induced mixing with a closure for reaction-enhanced mixing, such that the model explicitly accounts for the subgrid mixing due to turbulence and reaction. The model adaptively adjusts the relative contribution from these two aspects according to the local state of combustion and requires no tuning for the mixing rate parameter (CM). To evaluate the model performance, LES/FDF simulations are carried out for the Sydney piloted premixed jet burner flames PM1-50 and PM1-150. Compared with the constant CM model with the baseline CM = 2, the proposed model notably improved the prediction of the overall combustion progress of both flames. The relative importance of the reaction-enhanced mixing in comparison with the turbulence-induced mixing is further investigated. For flame PM1-50, the reaction-enhanced mixing has a prominent impact throughout the combustion progress, resulting in a large variation in CM in the progress variable space. This illustrates the advantage of the proposed model for the flame close to the flamelet regime. For flame PM1-150, the variation in CM during the combustion progress is relatively small owing to the relatively weak reaction-enhanced mixing compared to PM1-50. However, this desired CM is much larger than the order of unity. Therefore, the proposed model also has its advantage for the flame close to the broken-reaction zones regime.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/5.0028826</doi><tpages>13</tpages><orcidid>https://orcid.org/0000-0003-1994-6448</orcidid><orcidid>https://orcid.org/0000-0002-0070-5014</orcidid><orcidid>https://orcid.org/0000-0003-4200-3368</orcidid></addata></record> |
fulltext | fulltext |
identifier | ISSN: 1070-6631 |
ispartof | Physics of fluids (1994), 2020-11, Vol.32 (11) |
issn | 1070-6631 1089-7666 |
language | eng |
recordid | cdi_crossref_primary_10_1063_5_0028826 |
source | AIP Journals Complete; Alma/SFX Local Collection |
subjects | Closures Combustion Density Fluid dynamics Large eddy simulation Physics Premixed flames Time Turbulence |
title | On the modeling of scalar mixing timescale in filtered density function simulation of turbulent premixed flames |
url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-05T19%3A47%3A43IST&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=On%20the%20modeling%20of%20scalar%20mixing%20timescale%20in%20filtered%20density%20function%20simulation%20of%20turbulent%20premixed%20flames&rft.jtitle=Physics%20of%20fluids%20(1994)&rft.au=Yang,%20Tianwei&rft.date=2020-11-01&rft.volume=32&rft.issue=11&rft.issn=1070-6631&rft.eissn=1089-7666&rft.coden=PHFLE6&rft_id=info:doi/10.1063/5.0028826&rft_dat=%3Cproquest_cross%3E2463271816%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=2463271816&rft_id=info:pmid/&rfr_iscdi=true |