首页|面向双级旋流燃烧器的10 kHz滤波瑞利散射测温和CH2OPLIF测量研究

面向双级旋流燃烧器的10 kHz滤波瑞利散射测温和CH2OPLIF测量研究

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
本文开展了常压下双级径向分层旋流燃烧器内旋流火焰的二维温度场及甲醛浓度场测量研究,发展了 10 kHz测量频率的滤波瑞利散射测温技术首先,借助Hencken平面火焰炉构建了滤波瑞利散射信号与温度的校准关系基于校准后的滤波瑞利散射系统,获得了旋流火焰的二维温度场数据实验分析主要聚焦于甲烷-空气混合物在不同当量比(065至105)下的温度场变化.在当量比为0.85的单旋流火焰中,观察到火焰形状由V形向M形的转变,这归因于热扩散效应与空气热传导效应的相互作用.此外,在双旋流火焰中,研究发现相同运行条件下,值班火焰与主火焰在燃烧过程中发生从融合到分层的变化.本文详细描述了双旋流火焰分层现象期间的相平均温度场分布,并与瞬时CH2O分布进行了对比.
Investigation of 10 kHz Filtered Rayleigh Scattering and CH2O Planar Laser-Induced Fluorescence Measurement in Two-Stage Swirl Combustor
We present an exploration of two-dimensional flame thermometry and CH2O field measurement in a swirling flame within a two-stage radial stratified swirl combustor,operating under atmospheric pres-sure conditions.The research de-tails the calibration and analysis of filtered Rayleigh scattering(FRS)signal intensity,employing a planar flame from a Hencken burner to es-tablish a calibration curve for the FRS signal ratio and temperature.The 2-D temperature field results for the swirling flame are then showcased,all obtained using the calibrated FRS system.Parametric analysis focuses on the temperature fields of methane/air mixtures with equivalence ratios ranging from 0.65 to 1.05.The flame shape changes from V-shape to M-shape for a single-swirling flame with an equivalence ratio of 0.85,and that this change in shape is due to a combination of thermal diffusion effects and air-conducting effects.Further-more,in the dual-swirling flame,the study identifies a transition from mergence to stratifica-tion during combustion in both the pilot and main stage flames under the same operating con-ditions.The article concludes by presenting and comparing the phase-averaged temperature field distributions and instantaneous CH2O distributions during the stratified phenomena of the dual-swirling flame.

Filtered Rayleigh scatteringPlanar laser-induced fluorescenceTwo-stage radi-al stratified swirl combustorSwirling flameTemperature field

殷盛铭、费智勇、李林烨、王绍杰、徐亮亮、林阳、王晟、叶景峰、夏溪、顾明明、齐飞

展开 >

上海交通大学机械与动力工程学院,上海 200240

西北核技术研究所激光与物质相互作用国家重点实验室,西安 710024

滤波瑞利散射 平面激光诱导荧光 双级径向分层旋流燃烧器 旋流火焰 温度场

国家自然科学基金国家自然科学基金State Key Laboratory of Laser Interaction with Matter Foundation

5220622222227901SKLLIM2009

2024

10.1063/1674-0068/cjcp2312143

化学物理学报(英文版)
中国物理学会

化学物理学报(英文版)

CSTPCDEI
影响因子：0.162
ISSN：1674-0068
年,卷(期)：2024.37(2)
  • 30