Experimental study on combustion mode transition effects in a strut-based scramjet combustor

Qingchun Yang; Jichao Hu; Juntao Chang; Youhai Zong; Wen Bao

doi:10.1177/0954410014539288

Experimental study on combustion mode transition effects in a strut-based scramjet combustor

Qingchun Yang
, Jichao Hu
, Juntao Chang
, Youhai Zong
, Wen Bao^*

^*此作品的通讯作者

Harbin Institute of Technology

科研成果: 期刊稿件 › 文章 › 同行评审

18 引用（Scopus）

摘要

A strut-based scramjet combustor was operated in three different combustion modes under Mach 2.5 inflow conditions, scramjet mode, weak ramjet mode, and strong ramjet mode. The combustion mode transition effects are investigated through ground experiments. The scramjet mode occurred below the overall fuel equivalence ratio of around 0.44. Transition from the scramjet mode to the weak ramjet mode occurred at ER ∼ 0.44, accompanied by a sudden increase in thrust. By contrast, transition from the weak ramjet mode to strong ramjet mode occurred at ER ∼ 0.6125, accompanied by a sudden decrease in thrust. In particularly, combustion mode transitions significantly change the dominant characteristics of the flow field.

源语言	英语
页（从-至）	764-771
页数	8
期刊	Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
卷	229
期	4
DOI	https://doi.org/10.1177/0954410014539288
出版状态	已出版 - 16 3月 2015
已对外发布	是

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title = "Experimental study on combustion mode transition effects in a strut-based scramjet combustor",

abstract = "A strut-based scramjet combustor was operated in three different combustion modes under Mach 2.5 inflow conditions, scramjet mode, weak ramjet mode, and strong ramjet mode. The combustion mode transition effects are investigated through ground experiments. The scramjet mode occurred below the overall fuel equivalence ratio of around 0.44. Transition from the scramjet mode to the weak ramjet mode occurred at ER ∼ 0.44, accompanied by a sudden increase in thrust. By contrast, transition from the weak ramjet mode to strong ramjet mode occurred at ER ∼ 0.6125, accompanied by a sudden decrease in thrust. In particularly, combustion mode transitions significantly change the dominant characteristics of the flow field.",

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T1 - Experimental study on combustion mode transition effects in a strut-based scramjet combustor

AU - Yang, Qingchun

AU - Hu, Jichao

AU - Chang, Juntao

AU - Zong, Youhai

AU - Bao, Wen

N1 - Publisher Copyright: © IMechE 2014 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav.

PY - 2015/3/16

Y1 - 2015/3/16

N2 - A strut-based scramjet combustor was operated in three different combustion modes under Mach 2.5 inflow conditions, scramjet mode, weak ramjet mode, and strong ramjet mode. The combustion mode transition effects are investigated through ground experiments. The scramjet mode occurred below the overall fuel equivalence ratio of around 0.44. Transition from the scramjet mode to the weak ramjet mode occurred at ER ∼ 0.44, accompanied by a sudden increase in thrust. By contrast, transition from the weak ramjet mode to strong ramjet mode occurred at ER ∼ 0.6125, accompanied by a sudden decrease in thrust. In particularly, combustion mode transitions significantly change the dominant characteristics of the flow field.

AB - A strut-based scramjet combustor was operated in three different combustion modes under Mach 2.5 inflow conditions, scramjet mode, weak ramjet mode, and strong ramjet mode. The combustion mode transition effects are investigated through ground experiments. The scramjet mode occurred below the overall fuel equivalence ratio of around 0.44. Transition from the scramjet mode to the weak ramjet mode occurred at ER ∼ 0.44, accompanied by a sudden increase in thrust. By contrast, transition from the weak ramjet mode to strong ramjet mode occurred at ER ∼ 0.6125, accompanied by a sudden decrease in thrust. In particularly, combustion mode transitions significantly change the dominant characteristics of the flow field.

KW - Scramjet combustor

KW - combustion mode transition

KW - flow field

KW - sudden change

KW - thrust

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DO - 10.1177/0954410014539288

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SN - 0954-4100

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JO - Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering

JF - Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering

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ER -

Experimental study on combustion mode transition effects in a strut-based scramjet combustor

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