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新型航空发动机燃烧室的微波辅助点火研究。

Study on Microwave-Assisted Ignition Using a Novel Aero-Engine Combustor.

机构信息

Aviation Engineering School, Air Force Engineering University, Xi'an 710038, China.

出版信息

Sensors (Basel). 2023 May 25;23(11):5056. doi: 10.3390/s23115056.

DOI:10.3390/s23115056
PMID:37299783
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10255156/
Abstract

Microwave plasma can improve the performance of ignition and combustion, as well as reduce pollutant emissions. By designing a novel microwave feeding device, the combustor can be used as a cavity resonator to generate microwave plasma and improve the performance of ignition and combustion. In order to feed the energy of microwave into the combustor as much as possible, and effectively adapt to the change in resonance frequency of combustor during ignition and combustion, the combustor was designed and manufactured by optimizing the size of slot antenna and setting the tuning screws, according to the simulation results of HFSS software (version: 2019 R 3). The relationship between the size, position of metal tip in the combustor and the discharge voltage was studied using HFSS software, as well as the interaction between ignition kernel, flame and microwave. The resonant characteristics of combustor and the discharge of microwave-assisted igniter were subsequently studied via experiments. The results show that the combustor as microwave cavity resonator has a wider resonance curve and can adapt to the change in resonance frequency during ignition and combustion. It is also indicated that microwave can enhance the discharge development of igniter and increase the discharge size. Based on this, the electric and magnetic field effects of microwave are decoupled.

摘要

微波等离子体可以改善点火和燃烧性能，同时减少污染物排放。通过设计一种新型的微波馈电装置，燃烧器可以作为腔式谐振器来产生微波等离子体，从而提高点火和燃烧性能。为了尽可能将微波能量馈入燃烧器，并有效适应点火和燃烧过程中燃烧器共振频率的变化，根据 HFSS 软件（版本：2019 R3）的模拟结果，对槽天线的尺寸和调谐螺丝进行了优化设计和制造。使用 HFSS 软件研究了燃烧器中金属尖端的尺寸、位置与放电电压之间的关系，以及点火核、火焰和微波之间的相互作用。随后通过实验研究了燃烧器的谐振特性和微波辅助点火器的放电情况。结果表明，作为微波腔式谐振器的燃烧器具有更宽的谐振曲线，可以适应点火和燃烧过程中共振频率的变化。同时还表明，微波可以增强点火器的放电发展，增加放电尺寸。在此基础上，实现了微波的电场和磁场效应的解耦。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/49ce/10255156/baf9915e17dd/sensors-23-05056-g019.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/49ce/10255156/baf9915e17dd/sensors-23-05056-g019.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/49ce/10255156/445b6988138f/sensors-23-05056-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/49ce/10255156/9daa97437e99/sensors-23-05056-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/49ce/10255156/42124ddba634/sensors-23-05056-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/49ce/10255156/c32891cb9fdc/sensors-23-05056-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/49ce/10255156/27ea24b311b8/sensors-23-05056-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/49ce/10255156/105482fd239e/sensors-23-05056-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/49ce/10255156/d792620f5827/sensors-23-05056-g015a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/49ce/10255156/cc6929bac190/sensors-23-05056-g016.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/49ce/10255156/9f9e7454fa4a/sensors-23-05056-g017.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/49ce/10255156/bdee9b63b8fa/sensors-23-05056-g018.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/49ce/10255156/baf9915e17dd/sensors-23-05056-g019.jpg

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本文引用的文献

1
Exploring microwave resonant multi-point ignition using high-speed schlieren imaging.利用高速纹影成像技术探索微波共振多点点火
Rev Sci Instrum. 2018 Mar;89(3):034701. doi: 10.1063/1.5009273.
2
How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters.如何在不使用任何额外点火器的情况下点燃大气压微波等离子体炬。
J Vis Exp. 2015 Apr 16(98):52816. doi: 10.3791/52816.
3
Compact microwave re-entrant cavity applicator for plasma-assisted combustion.用于等离子体辅助燃烧的紧凑型微波重入式腔 applicator。 （注：这里“applicator”常见释义为“施加器”“涂抹器”等，结合语境可能是某种专业设备名称，暂保留英文未完全准确翻译出其专业术语）
Rev Sci Instrum. 2009 May;80(5):053507. doi: 10.1063/1.3131623.