Infrared spectral soot emission for robust and high-fidelity flame thermometry

L Ma, W Du, D Wen, Y Wang - Optics Letters, 2023 - opg.optica.org
Spectral soot emission (SSE) in the visible spectrum is a popular technique for non-intrusive
thermometry in sooting flames. However, its accuracy is restricted by uncertainties in the …

On the intricacies of soot volume fraction measurements in counterflow diffusion flames with light extinction: Effects of curtain flow

J Zhou, J Du, M Zhou, Y Wang - Journal of Aerosol Science, 2024 - Elsevier
Counterflow diffusion flame is an attractive platform for fundamental research on kinetics of
soot formation. Accurate determination of soot volume fraction in the flame is a prerequisite …

Spatially and temporally resolved measurements of soot propensity, temperature, radiation, and cold flow velocity of laminar ethylene non-premixed flames under …

N Gutiérrez, N Mancilla, JJ Cruz, P Rivera, F Escudero… - Fuel, 2024 - Elsevier
An acoustically forced axisymmetric laminar non-premixed flame is experimentally studied to
evaluate soot volume fraction, temperature and radiation throughout the phases of its …

Development and validation of a hybrid constraint spectral thermometry for laminar sooting flames

W Du, D Wen, L Ma, Y Wang - Applied Optics, 2022 - opg.optica.org
A hybrid constraint spectral thermometry (HCST) method based on combined light extinction
and spectral soot emission was developed for temperature measurements in sooting flames …

Radiative characteristics of laminar Eucalyptus Globulus flames at different coflows

P Pinto, G Severino, JJ Cruz, J Rivera… - International Journal of …, 2024 - Elsevier
Studying the interplay between heat transfer mechanisms in a burning wildland fuel layer
enables to better understand wildfire behavior. This works aims to assess the effect of air …

Towards low-cost soot pyrometry in laminar flames using broadband emission measurements and Artificial Neural Networks

J Portilla, JJ Cruz, F Escudero, A Rodríguez… - Journal of the Energy …, 2023 - Elsevier
This paper presents a low-cost approach based on Artificial Neural Networks (ANNs) for
retrieving fields of soot temperature in laminar flames from broadband soot emission signals …

Optimal thermometry theory of three-channel wide spectrum based on three-directional difference

Q Yu, C Liu, S Gu, Y Dong - Optics Express, 2024 - opg.optica.org
The constant spectral emissivity decoupling method within current wide-spectrum
thermometry theories stands as a primary factor contributing to accuracy degradation. This …

Graphical multispectral radiation temperature inversion algorithm based on deep learning

J Xing, J Guo, S Cui, W Li, X Chang - Optics Letters, 2023 - opg.optica.org
Neural networks are the most promising tool to solve the problem that an assumed
emissivity model is needed in the field of multispectral radiometric temperature …

Determining flame temperature by broadband two color pyrometry in a flame spreading over a thin solid in microgravity

M Thomsen, JJ Cruz, F Escudero, A Fuentes… - Proceedings of the …, 2023 - Elsevier
Fire spread inside a spacecraft is a constant concern in space travel. Understanding how the
fire grows and spreads, and how it can potentially be extinguished is critical for planning …

Slight asymmetry induces significant distortion of soot volume fraction measurements in counterflow diffusion flames with diffuse back-illumination imaging

J Zhou, M Zhou, L Ma, Y Wang - Optics Express, 2022 - opg.optica.org
Counterflow diffusion flame is a favorable platform for fundamental investigation of soot
kinetics. A diffuse back-illumination imaging technique for measuring soot volume fractions …