离心力场对内燃波转子火焰传播特性的影响  

Effects of Centrifugal Force on Flame Propagation Characteristics of Wave Rotor Combustor

作　　者：巩二磊 郝艳娜 李建中[2] 兰天浩 郑仁传 江炜[1] GONG Er-lei;HAO Yan-na;LI Jian-zhong;LAN Tian-hao;ZHENG Ren-chuan;JIANG Weil(Collegeof ofAerospace and Mechanical Engineering,Changzhou Institute of Technology Changzhou213002,China;CollegeofEnergyandPower Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]常州工学院航空与机械工程学院,江苏常州213002 [2]南京航空航天大学能源与动力学院,江苏南京210016

出　　处：《推进技术》2022年第6期264-270,共7页Journal of Propulsion Technology

基　　金：中国博士后科学基金(2020M671385)。

摘　　要：为了揭示离心力对内燃波转子火焰传播特性的影响,建立了内燃波转子燃烧过程的简化模型,数值模拟了不同离心力场强度下波转子通道内的燃烧过程。研究结果表明,离心力只在一定范围内对火焰传播起到加速作用,且这种影响与预混气当量油气比Φ有关,当Φ=1.0时,作用范围为[0~250g],在Φ=0.6,0.8时,作用范围为[0~700g];离心力场对内燃波转子火焰传播特性的影响机制是导致火焰锋面变形,进而引起火焰传播速度变化。In order to reveal the effects of centrifugal force on the flame propagation characteristics of wave rotor combustor,a simplified model of the combustion process of wave rotor combustor is established,and the combustion process in the rotor passage with different centrifugal force field intensity is numerically simulated.The results show that the centrifugal force can accelerate the flame propagation only in a certain range,and the certain range is related to the equivalent ratio Φ of premixture. Concretely,when Φ = 1.0,the certain range is 0~250g. And when Φ is 0.6 or 0.8,the certain range is 0~700g. The influence mechanism of centrifugal force on the flame propagation characteristics of wave rotor combustor is that the centrifugal force caused the deformation of flame front and then variation of the flame propagation velocity.

关 键 词：内燃波转子 离心力 火焰传播 冒泡速度 火焰锋面 

分 类 号：V231.2[航空宇航科学与技术—航空宇航推进理论与工程]