Ignition characteristics of pre-combustion plasma jet igniter

doi:10.1088/1674-1056/ab470e

中国物理B ›› 2019, Vol. 28 ›› Issue (11): 114702-114702.doi: 10.1088/1674-1056/ab470e

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Ignition characteristics of pre-combustion plasma jet igniter

Si-Bo Wang(王思博), Jin-Lu Yu(于锦禄), Jing-Feng Ye(叶景峰), Guo-Hua Li(李国华), Zhao Chen(陈朝), Lu-Yun Jiang(蒋陆昀), Chen-Li Gu(古晨力)

1 Air Force Engineering University, Xi'an 710038, China;
2 State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an 710038, China;
3 The University of Sheffield, Western Bank Sheffield, S10 2TN, UK

收稿日期:2019-07-26 修回日期:2019-09-23 出版日期:2019-11-05 发布日期:2019-11-05
通讯作者: Jin-Lu Yu E-mail:yujinlu1@163.com
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 51776223 and 91741112).

Ignition characteristics of pre-combustion plasma jet igniter

Si-Bo Wang(王思博)¹, Jin-Lu Yu(于锦禄)¹, Jing-Feng Ye(叶景峰)², Guo-Hua Li(李国华)², Zhao Chen(陈朝)¹, Lu-Yun Jiang(蒋陆昀)¹, Chen-Li Gu(古晨力)³

1 Air Force Engineering University, Xi'an 710038, China;
2 State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an 710038, China;
3 The University of Sheffield, Western Bank Sheffield, S10 2TN, UK

Received:2019-07-26 Revised:2019-09-23 Online:2019-11-05 Published:2019-11-05
Contact: Jin-Lu Yu E-mail:yujinlu1@163.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 51776223 and 91741112).

摘要/Abstract

摘要： At present, aero-engines face a major need to widen the ignition envelope. In order to provide a technical support to expand the high altitude ignition envelope of aero-engines, in this article we propose a novel ignition technology, i.e., “pre-combustion plasma jet ignition technology”. In this paper, we also design a pre-combustion plasma jet igniter. Its discharge characteristics, jet characteristics, and ignition effects are studied. The results show that increasing the equivalent ratio of jet gas can enhance the discharge stability and increase the duty cycle. At the same time, it can reduce working power and energy consumption. The increase of equivalent ratio in jet gas can enhance the length and ignition area of plasma jet. In the process of ignition, the pre-combustion plasma jet igniter has obvious advantages, suchn as shortening the ignition delay time and enlarging the ignition boundary. When the airflow velocity is 39.11 m/s and the inlet air temperature is 80℃, compared with the spark igniter and the air plasma jet igniter, the pre-combustion plasma jet igniter has an ignition boundary that is expanded by 319.8% and 55.7% respectively.

关键词: pre-combustion, discharge stability, ignition delay time, ignition boundary

Abstract: At present, aero-engines face a major need to widen the ignition envelope. In order to provide a technical support to expand the high altitude ignition envelope of aero-engines, in this article we propose a novel ignition technology, i.e., “pre-combustion plasma jet ignition technology”. In this paper, we also design a pre-combustion plasma jet igniter. Its discharge characteristics, jet characteristics, and ignition effects are studied. The results show that increasing the equivalent ratio of jet gas can enhance the discharge stability and increase the duty cycle. At the same time, it can reduce working power and energy consumption. The increase of equivalent ratio in jet gas can enhance the length and ignition area of plasma jet. In the process of ignition, the pre-combustion plasma jet igniter has obvious advantages, suchn as shortening the ignition delay time and enlarging the ignition boundary. When the airflow velocity is 39.11 m/s and the inlet air temperature is 80℃, compared with the spark igniter and the air plasma jet igniter, the pre-combustion plasma jet igniter has an ignition boundary that is expanded by 319.8% and 55.7% respectively.

Key words: pre-combustion, discharge stability, ignition delay time, ignition boundary

中图分类号: (Turbulent jets)

47.27.wg

52.25.Kn (Thermodynamics of plasmas) 52.25.Jm (Ionization of plasmas) 52.50.Nr (Plasma heating by DC fields; ohmic heating, arcs)

王思博, 于锦禄, 叶景峰, 李国华, 陈朝, 蒋陆昀, 古晨力. Ignition characteristics of pre-combustion plasma jet igniter[J]. 中国物理B, 2019, 28(11): 114702-114702.

Si-Bo Wang(王思博), Jin-Lu Yu(于锦禄), Jing-Feng Ye(叶景峰), Guo-Hua Li(李国华), Zhao Chen(陈朝), Lu-Yun Jiang(蒋陆昀), Chen-Li Gu(古晨力). Ignition characteristics of pre-combustion plasma jet igniter[J]. Chin. Phys. B, 2019, 28(11): 114702-114702.

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Ignition characteristics of pre-combustion plasma jet igniter

Ignition characteristics of pre-combustion plasma jet igniter

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