Application of high-speed, species-specific chemiluminescence imaging for laminar flame speed and Markstein length measurements in spherically expanding flames

MA Turner, TT Paschal, P Parajuli… - … Thermal and Fluid …, 2021 - Elsevier
A high-speed chemiluminescence imaging diagnostic system has been developed and
characterized for measuring species-specific properties of spherically expanding flames …

Experimental Observation of Negative Temperature Dependence in iso-Octane Burning Velocities

AJ Susa, AM Ferris, DF Davidson, RK Hanson - AIAA Journal, 2019 - arc.aiaa.org
The average burning velocities S¯ b of premixed, spherically expanding iso-octane flames
are reported for flame radii from 0.75 to 1.75 cm between 400 and 900 K, near 1 atm …

Resolving flame thickness using high-speed chemiluminescence imaging of OH* and CH* in spherically expanding methane–air flames

MA Turner, TT Paschal, P Parajuli… - Proceedings of the …, 2021 - Elsevier
The coupling of CFD simulations with detailed chemical kinetics presents great progress in
predicting the complex behavior of reacting flows, but also requires validated input …

[PDF][PDF] 紫外像增强器在航空发动机燃烧诊断中的应用

马俊卉, 王岭雪, 胡婧玲, 郑德智, 闻浩诚, 王兵, 蔡毅 - 红外技术, 2024 - researching.cn
航空发动机燃烧过程中, OH*, NO*, NH* 等激发态自由基伴随着紫外波段的微弱自发光,
且随燃烧的进程而快速变化. 紫外像增强器最高具有百万倍电子增益, 纳秒量级快门 …

An experimental investigation on MMH/NTO impinging jets flame characteristics at high chamber pressure

L Fei, F Zhang, C Tang, T Xu, A Yang, B Yang… - Proceedings of the …, 2024 - Elsevier
Monomethyl hydrazine (MMH) and nitrogen tetroxide (NTO) propellant is the most prevalent
combination in hypergolic liquid rocket engines for space propulsion scenarios. However …

Application of Ultraviolet Image Intensifiers in Combustion Diagnostics of Aero-engines

MA Junhui, W Lingxue, HU Jingling, Z Dezhi… - Infrared …, 2024 - hwjs.nvir.cn
In the combustion process of aero-engines, excited-state free radicals such as OH*, NO*,
and NH* emit faint self-chemiluminescence in the ultraviolet (UV) band, which changes …

Femtosecond Two-Photon Laser-Induced Fluorescence for Temperature and Chemical Species Imaging in Flames

P Parajuli - 2023 - search.proquest.com
In recent years, non-intrusive, laser-based combustion diagnostic techniques utilizing
ultrashort-pulse, femtosecond (fs) duration laser sources have evolved as promising tools for …

Laminar Flame Speeds of Oxy-Methane Flames With CO2 Dilution at Elevated Pressures

MA Turner, WD Kulatilaka… - … Expo: Power for …, 2020 - asmedigitalcollection.asme.org
Spherically expanding, laminar flame experiments have been conducted for oxy-methane
mixtures diluted in CO2. Test conditions consisted of pressures of 5 atm and 10 atm, an …

Progress toward flame thickness measurements from chemiluminescence of spherical flames

MA Turner, TT Paschal, P Parajulli… - AIAA Scitech 2020 …, 2020 - arc.aiaa.org
Modeling of turbulent flame behavior relies on fundamental understanding of laminar flame
characteristics, such as laminar flame speed and thickness. The thickness of a laminar flame …

Ultrashort-Laser-Pulse Multi-Photon Excitation Schemes for Combustion Diagnostics

A Jain - 2020 - search.proquest.com
Laser-based diagnostic approaches using ultra-short femtosecond (fs) laser pulses is a
promising method for investigating complex chemically reacting flow fields such as flames …