航空学报2026，Vol.47Issue(13)：95-107,13.DOI:10.7527/S1000-6893.2026.33221
等离子体化学效应在激光点火过程中的作用机制与评估
Mechanism and evaluation of plasma chemical effects in laser ignition process
摘要
Abstract
Laser ignition technology has received widespread attention in aerospace power systems due to its flexible positioning,high energy density,and fast heat release rate.It mainly relies on the aerodynamic,thermal,and chemi-cal effects of plasma.This article is based on laser ignition experiments conducted in a constant volume combustion chamber of methane/air mixture.The focus is on studying the flame propagation characteristics of single pulse laser-induced ignition,analyzing the influence of laser pulse energy on ignition and flame propagation characteristics,and conducting numerical simulation studies to evaluate the influence of plasma chemical effects.Research has found that the initial flame nucleus exhibits a"three lobed structure",which is very similar to the vortex ring structure formed by laser-induced air breakdown,verifying the important role of plasma aerodynamic effects in ignition and thermonuclear development.Further comparative analysis was conducted on the development characteristics of ignition flame nuclei with and without chemical effects.The results showed that compared to the aerodynamic and thermal effects of plasma,chemical effects had little effect on the development of flame nuclei.关键词
激光点火/等离子体/火焰传播/空气解离/化学效应Key words
laser ignition/plasma/flame propagation/air ionization/chemical effects分类
航空航天引用本文复制引用
李牧,林李果,桂丰,严红,陈福振,刘凡..等离子体化学效应在激光点火过程中的作用机制与评估[J].航空学报,2026,47(13):95-107,13.基金项目
国家自然科学基金(12172298,12302305) （12172298,12302305）
中央高校基本科研业务费专项资金 （）
西北工业大学硕士研究生实践创新能力培养基金(PF2025058) （PF2025058）
四川省科技计划(2024NSFSC0122) National Natural Science Foundation of China(12172298,12302305) （2024NSFSC0122）
Fundamental Research Funds for the Central Universities （）
Practice and Innovation Funds for Graduate Students of Northwestern Polytechnical University(PF2025058) （PF2025058）
Sichuan Science and Technology Program(2024NSFSC0122) （2024NSFSC0122）
