哈尔滨工业大学 能源科学与工程学院,哈尔滨,150001
张军龙(1990-), 男, 山东青岛人, 博士研究生, 研究方向:超声速燃烧室火焰特性及性能优化.E-mail:junlongzhang1990@163.com
常军涛(1981-), 教授, 研究方向:超燃冲压发动机流动及燃烧特性.E-mail:changjuntao@hit.edu.cn
纸质出版:2020
移动端阅览
张军龙, 常军涛, 王瑄, 鲍文. 基于支板稳燃的超声速火焰特性研究进展[J]. 空气动力学学报, 2020, 38(3): 577-592.
ZHANG Junlong, CHANG Juntao, WANG Xuan, et al. Recent research progress on flame characteristics in strut-equipped scramjet combustor[J]. 2020, 38(3): 577-592.
张军龙, 常军涛, 王瑄, 鲍文. 基于支板稳燃的超声速火焰特性研究进展[J]. 空气动力学学报, 2020, 38(3): 577-592. DOI: 10.7638/kqdlxxb-2019.0168.
ZHANG Junlong, CHANG Juntao, WANG Xuan, et al. Recent research progress on flame characteristics in strut-equipped scramjet combustor[J]. 2020, 38(3): 577-592. DOI: 10.7638/kqdlxxb-2019.0168.
以超燃冲压发动机燃烧室为主要研究对象,对超声速气流中的火焰稳定机理及火焰传播特性的研究进展进行了综述,涵盖了不同稳燃器的超声速燃烧室中的火焰特性及火焰稳燃机理分析、火焰传播及振荡特性等研究内容,旨在揭示超声速气流中的火焰特征并进一步实现燃烧室的性能优化,以期对超声速燃烧室的火焰特性相关研究提供一定的参考。首先,从燃烧室流动及燃料驻留时间的角度分析了超声速火焰稳定的难点,进一步分析了超声速燃烧室中火焰稳定的基本判据,总结了当前两种主流的火焰稳燃模式,分析了支板稳燃器在增强燃料掺混方面的优势,并以支板稳燃为主要侧重点进行了后续火焰特性的研究;其次,从增加燃料驻留时间和减小燃料化学反应时间两个角度总结了当前实现超声速火焰稳定的基本方法及稳燃原理。最后,讨论了火焰稳定之后的燃烧室火焰动态特性,包括火焰传播特性和火焰振荡特性,为后续的燃烧优化提供参考。
Scramjets are regarded as one of the most efficiency air-breathing propulsion devices in supersonic flight conditions
and combustors are critical components in scramjet engines. In supersonic combustor
the velocity of the main airflow is of an order of kilometers per second
and in such a harsh flowing condition
the combustion organization and flame stabilization are extremely hard to be achieved. To solve the issues about flame holding and combustion efficiency improving
it is necessary to have a deep understanding in the flame characteristics
based on which
the further optimization could be carried out. In superson
ic combustor
the flame characteristics including the flame mechanism characteristic and the flame propagation characteristic should be paid more attention. This paper aims to provide a review on flame stabilization and flame propagation characteristics in supersonic combustor to help the researchers easily working on supersonic combustion with their further work. At first
the difficulty on the flame stabilization is discussed
including the higher airflow velocity and lower fuel resident time in the combustor. Furthermore
the flame characteristic in supersonic combustor in two kinds of main flame stabilization modes
namely the cavity and the strut
are summarized
and the advantage of strut in fuel injection and fuel mixing performance is set forth. The flame stabilization criteria are also presented and analyzed. Then
the methods of flame stabilization
including enlarging the fuel resident time and shortening the fuel reaction time
are also reported
and the mechanism of flame stabilization in different flame holding schemes are analyzed. The O
2
-pilot strut designed by Harbin Institute of Technology is focused on
and the dynamic characteristics
including flame propagation and flame oscillation characteristics
are analyzed. The flame propagation characteristic in strut/wall combined fuel injection mode is discussed. Based on this paper
the improved scheme of combustion performance is given to provide a reference for the further investigation.
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