Tomographic absorption spectroscopy for the study of gas dynamics and reactive flows

W Cai, CF Kaminski - Progress in energy and combustion science, 2017 - Elsevier
Optical imaging techniques are ubiquitous for the resolution of non-uniformities in gas flows.
Planar imaging techniques such as laser-induced fluorescence are well established and …

Tunable diode laser spectroscopy as a technique for combustion diagnostics

MA Bolshov, YA Kuritsyn, YV Romanovskii - Spectrochimica Acta Part B …, 2015 - Elsevier
Tunable diode laser absorption spectroscopy (TDLAS) has become a proven method of
rapid gas diagnostics. In the present review an overview of the state of the art of TDL-based …

Volumetric laser absorption imaging of temperature, CO and CO2 in laminar flames using 3D masked Tikhonov regularization

C Wei, KK Schwarm, DI Pineda, RM Spearrin - Combustion and Flame, 2021 - Elsevier
Mid-infrared laser absorption imaging of flame temperature and species concentration is
expanded to three dimensions with linear tomographic methods using Tikhonov …

Deep neural network inversion for 3D laser absorption imaging of methane in reacting flows

C Wei, KK Schwarm, DI Pineda, RM Spearrin - Optics letters, 2020 - opg.optica.org
Mid-infrared laser absorption imaging of methane in flames is performed with a learning-
based approach to the limited view-angle inversion problem. A deep neural network is …

[PDF][PDF] 基于波长调制吸收光谱的燃烧流场二维重建

王兴平, 彭冬, 李佳胜, 金熠, 翟超 - Chinese Journal of Lasers, 2021 - researching.cn
摘要可调谐二极管激光吸收光谱(TDLAS) 技术是进行燃烧流场关键参数测量的有效有段.
采用近红外水蒸汽的两条吸收线(7168.44 cm-1 与7185.60 cm-1), 分别利用直接吸收法与波长 …

Mid-infrared CO2 sensor with blended absorption features for non-uniform laminar premixed flames

Z Wang, W Wang, L Ma, P Fu, W Ren, X Chao - Applied Physics B, 2022 - Springer
We develop a novel mid-infrared CO2 absorption sensor exploiting spectrally blended
features to characterize thermochemical non-uniformity of laminar premixed flames. A new …

A compact laser absorption spectroscopy tomographic system with short spectral scanning time and adjustable frame rate

H Zhang, Z Cao, W Zhao, A Huang… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
A compact hardware system for laser absorption spectroscopy tomography is introduced to
monitor dynamic flame evolution with a short and fixed spectral scanning time and an …

Reconstruction and simulation of temperature and CO2 concentration in an axisymmetric flame based on TDLAS

G Zhang, G Wang, Y Huang, Y Wang, X Liu - Optik, 2018 - Elsevier
Abstract Two-dimensional (2D) distributions of temperature and species concentration are
crucial information to understand PAH inception and soot formation in diffusion flames. We …

In-situ thermochemical analysis of hybrid rocket fuel oxidation via laser absorption tomography of , , and

FA Bendana, IC Sanders, JJ Castillo, CG Hagström… - Experiments in …, 2020 - Springer
A laser absorption tomography (LAT) technique was developed for investigating the
thermochemical structure of a solid fuel oxidation layer in a hybrid rocket geometry. The …

Linear calibration‐free wavelength modulation spectroscopy

R Li, F Li, X Lin, X Yu - Microwave and Optical Technology …, 2023 - Wiley Online Library
This article presents a new linear calibration‐free wavelength modulation spectroscopy
(LCF‐WMS) technique for gas sensing. By combining the natural logarithms of the …