[author_cn_name].[cn_title][J].空军工程大学学报:自然科学版,[year_id],[volume]([issue]):[start_page]-[end_page] 滑动弧放电等离子体激励的值班火焰头部放电特性实验- An Experiment in Discharge Characteristics of Pilot Flame Dome Based on Gliding Arc Discharge Plasma Actuation
文章摘要
耿华东, 陈一, 崔巍, 胡长淮, 苗慧丰, 吴云.滑动弧放电等离子体激励的值班火焰头部放电特性实验[J].空军工程大学学报:自然科学版,2022,23(1):53-63
滑动弧放电等离子体激励的值班火焰头部放电特性实验
An Experiment in Discharge Characteristics of Pilot Flame Dome Based on Gliding Arc Discharge Plasma Actuation
  
DOI:
中文关键词: 滑动弧放电  等离子体点火助燃  值班火焰头部  放电特性
英文关键词: gliding arc discharge  plasma ignition and assisted combustion  pilot flame dome  discharge characteristics
基金项目:国家自然科学基金(91941301)
作者单位
耿华东, 陈一, 崔巍, 胡长淮, 苗慧丰, 吴云 空军工程大学等离子体动力学重点实验室西安710038 
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中文摘要:
      滑动弧放电等离子体在拓宽燃烧室点熄火边界、缩短点火延迟时间、提高燃烧效率等方面具有显著优势。在已有燃油裂解头部的基础上,优化滑动弧放电位置,创新地研制了基于滑动弧放电等离子体激励的燃烧室值班火焰头部,并对其放电特性开展了实验研究,着重分析了不同空气流量和输入电压对电弧动态特性、滑动模式、平均击穿电压、平均功率、平均旋转角速度的影响。结果表明:提出的方案能在文氏管与燃油喷嘴之间形成稳定的旋转滑动弧放电区域,同时存在两种不同的放电模式,即steady arc gliding (A-G) 模式和breakdown gliding (B-G) 模式,受空气流量和输入电压的显著影响,当空气流量小于200 L/min时,在140~240 V的输入电压下,主要以A-G模式放电,随着空气流量的增加向B-G模式发展,而随着输入电压的增加,A-G模式占比逐渐增大;放电平均击穿电压、旋转角速度随着输入电压的增加或空气流量的减小而减小,但平均功率随输入电压的增大而增大。
英文摘要:
      Gliding arc discharge plasma has obvious advantages in the aspects of broadening the ignition and extinction boundary of combustor, reducing ignition delay time and improving combustion efficiency. On the basis of exiting technology of fuel pyrolysis dome, this paper optimizes the position of gliding arc discharge and innovatively develops the pilot flame dome based on gliding arc discharge plasma actuation. And the experimental study on discharge characteristics is carried out to investigate the arc dynamic characteristics, gliding mode, average breakdown voltage, power under conditions of different airflow rates and input voltages. The results show that the Pilot flame dome can form a stable rotating gliding arc discharge area between Venturi tube and fuel nozzle, and there are two different discharge modes, i.e. Steady Arc Gliding (A-G) mode and Breakdown Gliding (B-G) mode, which are significantly affected by the airflow rate and input voltage. When the airflow rate is less than 200 L/min, the discharge is mainly in A-G mode at the input voltage of 140~240 V, and develop to B-G mode with the increase of airflow rate. However, the proportion of A-G mode increases gradually with the increase of input voltage. The average breakdown voltage and rotating angular velocity decrease with the increase of input voltage or the decrease of air flow, but the average discharge power increases with the increase of input voltage.
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