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Experimental study of scramjet cavity with rear edge slots and its performance in combustion enhancement
To improve the effect of the traditional two-dimensional trapezoidal cavity in promoting mixing and combustion, a three-dimensional cavity with slots equipped on the cavity rear edge was proposed and investigated in a model supersonic combustor in this work. Experiments are conducted at a direct-con...
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Published in: | Acta mechanica Sinica 2024, Vol.40 (1), Article 323135 |
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creator | Zhang, Lin Qiao, Hongwei Liang, Jianhan Wang, Yi Ding, Meng Yang, Leichao Sun, Mingbo |
description | To improve the effect of the traditional two-dimensional trapezoidal cavity in promoting mixing and combustion, a three-dimensional cavity with slots equipped on the cavity rear edge was proposed and investigated in a model supersonic combustor in this work. Experiments are conducted at a direct-connect test facility, where the traditional two-dimensional trapezoidal cavity (baseline) case and the slots cavity case are compared. The results show that the overall combustion along the combustor is intensified by the slots cavity. Specifically, the wall static pressure around the cavity increases by 6.1% at the lower injection pressure and 12.7% at the higher injection pressure. Based on the quasi-one-dimensional analysis, the estimated combustion efficiency increases by more than 20% due to the slots cavity. For the slots case, the combustion area and flamebase location are less affected by the injection pressure than that for the baseline case. As a result, the combustion that the slots cavity stabilizes is more stable than the combustion that the baseline cavity stabilizes. The increased exchange area, the bigger length-to-depth ratio, and the transverse flow and streamwise vortices induced by the slots may be responsible for the enhanced mixing and combustion. |
doi_str_mv | 10.1007/s10409-023-23135-x |
format | article |
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Experiments are conducted at a direct-connect test facility, where the traditional two-dimensional trapezoidal cavity (baseline) case and the slots cavity case are compared. The results show that the overall combustion along the combustor is intensified by the slots cavity. Specifically, the wall static pressure around the cavity increases by 6.1% at the lower injection pressure and 12.7% at the higher injection pressure. Based on the quasi-one-dimensional analysis, the estimated combustion efficiency increases by more than 20% due to the slots cavity. For the slots case, the combustion area and flamebase location are less affected by the injection pressure than that for the baseline case. As a result, the combustion that the slots cavity stabilizes is more stable than the combustion that the baseline cavity stabilizes. The increased exchange area, the bigger length-to-depth ratio, and the transverse flow and streamwise vortices induced by the slots may be responsible for the enhanced mixing and combustion.</description><edition>English ed.</edition><identifier>ISSN: 0567-7718</identifier><identifier>EISSN: 1614-3116</identifier><identifier>DOI: 10.1007/s10409-023-23135-x</identifier><language>eng</language><publisher>Beijing: The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences</publisher><subject>Classical and Continuum Physics ; Combustion chambers ; Combustion efficiency ; Computational Intelligence ; Dimensional analysis ; Engineering ; Engineering Fluid Dynamics ; Fluid flow ; Mathematical analysis ; Research Paper ; Static pressure ; Supersonic combustion ramjet engines ; Test facilities ; Theoretical and Applied Mechanics</subject><ispartof>Acta mechanica Sinica, 2024, Vol.40 (1), Article 323135</ispartof><rights>The Chinese Society of Theoretical and Applied Mechanics and Springer-Verlag GmbH Germany, part of Springer Nature 2023</rights><rights>The Chinese Society of Theoretical and Applied Mechanics and Springer-Verlag GmbH Germany, part of Springer Nature 2023.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c319t-7ed74c2b84a99196232f932c420beeb120535b0fb911a2c28212c8d03e09f4343</citedby><cites>FETCH-LOGICAL-c319t-7ed74c2b84a99196232f932c420beeb120535b0fb911a2c28212c8d03e09f4343</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Zhang, Lin</creatorcontrib><creatorcontrib>Qiao, Hongwei</creatorcontrib><creatorcontrib>Liang, Jianhan</creatorcontrib><creatorcontrib>Wang, Yi</creatorcontrib><creatorcontrib>Ding, Meng</creatorcontrib><creatorcontrib>Yang, Leichao</creatorcontrib><creatorcontrib>Sun, Mingbo</creatorcontrib><title>Experimental study of scramjet cavity with rear edge slots and its performance in combustion enhancement</title><title>Acta mechanica Sinica</title><addtitle>Acta Mech. Sin</addtitle><description>To improve the effect of the traditional two-dimensional trapezoidal cavity in promoting mixing and combustion, a three-dimensional cavity with slots equipped on the cavity rear edge was proposed and investigated in a model supersonic combustor in this work. Experiments are conducted at a direct-connect test facility, where the traditional two-dimensional trapezoidal cavity (baseline) case and the slots cavity case are compared. The results show that the overall combustion along the combustor is intensified by the slots cavity. Specifically, the wall static pressure around the cavity increases by 6.1% at the lower injection pressure and 12.7% at the higher injection pressure. Based on the quasi-one-dimensional analysis, the estimated combustion efficiency increases by more than 20% due to the slots cavity. For the slots case, the combustion area and flamebase location are less affected by the injection pressure than that for the baseline case. As a result, the combustion that the slots cavity stabilizes is more stable than the combustion that the baseline cavity stabilizes. The increased exchange area, the bigger length-to-depth ratio, and the transverse flow and streamwise vortices induced by the slots may be responsible for the enhanced mixing and combustion.</description><subject>Classical and Continuum Physics</subject><subject>Combustion chambers</subject><subject>Combustion efficiency</subject><subject>Computational Intelligence</subject><subject>Dimensional analysis</subject><subject>Engineering</subject><subject>Engineering Fluid Dynamics</subject><subject>Fluid flow</subject><subject>Mathematical analysis</subject><subject>Research Paper</subject><subject>Static pressure</subject><subject>Supersonic combustion ramjet engines</subject><subject>Test facilities</subject><subject>Theoretical and Applied Mechanics</subject><issn>0567-7718</issn><issn>1614-3116</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LAzEURYMoWKt_wFXA9WhekplMllLqBwhudB0ymUw7pZPUJKPtvzd1BHeuLjzuPQ8OQtdAboEQcReBcCILQllBGbCy2J-gGVTACwZQnaIZKStRCAH1ObqIcUMIq0DADK2X-50N_WBd0lsc09gesO9wNEEPG5uw0Z99OuCvPq1xsDpg264sjlufItauxX3ODOh8GLQzFvcOGz80Y0y9d9i69fF6pF-is05vo736zTl6f1i-LZ6Kl9fH58X9S2EYyFQI2wpuaFNzLSXIijLaSUYNp6SxtgFKSlY2pGskgKaG1hSoqVvCLJEdZ5zN0c3E3QX_MdqY1MaPweWXitayFBXhdZlbdGqZ4GMMtlO7LEGHgwKijkbVZFRlo-rHqNrnEZtGMZfdyoY_9D-rb9jceno</recordid><startdate>2024</startdate><enddate>2024</enddate><creator>Zhang, Lin</creator><creator>Qiao, Hongwei</creator><creator>Liang, Jianhan</creator><creator>Wang, Yi</creator><creator>Ding, Meng</creator><creator>Yang, Leichao</creator><creator>Sun, Mingbo</creator><general>The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>2024</creationdate><title>Experimental study of scramjet cavity with rear edge slots and its performance in combustion enhancement</title><author>Zhang, Lin ; Qiao, Hongwei ; Liang, Jianhan ; Wang, Yi ; Ding, Meng ; Yang, Leichao ; Sun, Mingbo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c319t-7ed74c2b84a99196232f932c420beeb120535b0fb911a2c28212c8d03e09f4343</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Classical and Continuum Physics</topic><topic>Combustion chambers</topic><topic>Combustion efficiency</topic><topic>Computational Intelligence</topic><topic>Dimensional analysis</topic><topic>Engineering</topic><topic>Engineering Fluid Dynamics</topic><topic>Fluid flow</topic><topic>Mathematical analysis</topic><topic>Research Paper</topic><topic>Static pressure</topic><topic>Supersonic combustion ramjet engines</topic><topic>Test facilities</topic><topic>Theoretical and Applied Mechanics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Lin</creatorcontrib><creatorcontrib>Qiao, Hongwei</creatorcontrib><creatorcontrib>Liang, Jianhan</creatorcontrib><creatorcontrib>Wang, Yi</creatorcontrib><creatorcontrib>Ding, Meng</creatorcontrib><creatorcontrib>Yang, Leichao</creatorcontrib><creatorcontrib>Sun, Mingbo</creatorcontrib><collection>CrossRef</collection><jtitle>Acta mechanica Sinica</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Lin</au><au>Qiao, Hongwei</au><au>Liang, Jianhan</au><au>Wang, Yi</au><au>Ding, Meng</au><au>Yang, Leichao</au><au>Sun, Mingbo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Experimental study of scramjet cavity with rear edge slots and its performance in combustion enhancement</atitle><jtitle>Acta mechanica Sinica</jtitle><stitle>Acta Mech. Sin</stitle><date>2024</date><risdate>2024</risdate><volume>40</volume><issue>1</issue><artnum>323135</artnum><issn>0567-7718</issn><eissn>1614-3116</eissn><abstract>To improve the effect of the traditional two-dimensional trapezoidal cavity in promoting mixing and combustion, a three-dimensional cavity with slots equipped on the cavity rear edge was proposed and investigated in a model supersonic combustor in this work. Experiments are conducted at a direct-connect test facility, where the traditional two-dimensional trapezoidal cavity (baseline) case and the slots cavity case are compared. The results show that the overall combustion along the combustor is intensified by the slots cavity. Specifically, the wall static pressure around the cavity increases by 6.1% at the lower injection pressure and 12.7% at the higher injection pressure. Based on the quasi-one-dimensional analysis, the estimated combustion efficiency increases by more than 20% due to the slots cavity. For the slots case, the combustion area and flamebase location are less affected by the injection pressure than that for the baseline case. As a result, the combustion that the slots cavity stabilizes is more stable than the combustion that the baseline cavity stabilizes. The increased exchange area, the bigger length-to-depth ratio, and the transverse flow and streamwise vortices induced by the slots may be responsible for the enhanced mixing and combustion.</abstract><cop>Beijing</cop><pub>The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences</pub><doi>10.1007/s10409-023-23135-x</doi><edition>English ed.</edition></addata></record> |
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subjects | Classical and Continuum Physics Combustion chambers Combustion efficiency Computational Intelligence Dimensional analysis Engineering Engineering Fluid Dynamics Fluid flow Mathematical analysis Research Paper Static pressure Supersonic combustion ramjet engines Test facilities Theoretical and Applied Mechanics |
title | Experimental study of scramjet cavity with rear edge slots and its performance in combustion enhancement |
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