U-Net applied to retrieve two-dimensional temperature and CO2 concentration fields of laminar diffusion flames

H Li, T Ren, X Liu, C Zhao - Fuel, 2022 - Elsevier
Direct absorption spectroscopy measurement of the 4. 3 μ m CO 2 using interband cascade
laser with a high spectral resolution, provides theoretical feasibility to retrieve the spatial …

Physics-trained neural network for sparse-view volumetric laser absorption imaging of species and temperature in reacting flows

C Wei, KK Schwarm, DI Pineda, RM Spearrin - Optics Express, 2021 - opg.optica.org
A deep learning method for laser absorption tomography was developed to effectively
integrate physical priors related to flow-field thermochemistry and transport. Mid-fidelity …

Three-dimensional rapid visualization of flame temperature field via compression and noise reduction of light field imaging

ZT Niu, H Qi, JW Shi, YT Ren, MJ He, W Zhou - … Communications in Heat …, 2022 - Elsevier
Light field (LF) imaging, as an emerging temperature measurement technique, can
simultaneously capture the intensity and direction information of radiation in the combustion …

2D mid-infrared laser-absorption imaging for tomographic reconstruction of temperature and carbon monoxide in laminar flames

RJ Tancin, RM Spearrin, CS Goldenstein - Optics Express, 2019 - opg.optica.org
This manuscript presents the design and initial application of a mid-infrared laser-absorption-
imaging (LAI) technique for two-dimensional (2D) measurements and tomographic …

Optimum angular arrangement of a multi-light field imaging technique for flame temperature reconstruction

Q Qi, MM Hossain, G Lei, T Wang, T Ling, C Xu - Measurement, 2022 - Elsevier
A burner array produces a multi-modal flame temperature field and a compact combustion
region. A multi-light field imaging technique can retrieve the multi-modal flame temperature …

Reconstructing temperature fields from OH distribution and soot volume fraction in turbulent flames using an artificial neural network

X Nie, W Zhang, X Dong, PR Medwell, GJ Nathan… - Combustion and …, 2024 - Elsevier
We present a methodology based on artificial neural networks for reconstructing flame
temperature fields from planar distributions of hydroxyl (OH) radicals and soot volume …

Hierarchical temperature imaging using pseudoinversed convolutional neural network aided TDLAS tomography

J Si, G Li, Y Cheng, R Zhang… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
As an in situ combustion diagnostic tool, tunable diode laser absorption spectroscopy
(TDLAS) tomography has been widely used for imaging 2-D temperature distributions in …

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 …

Efficient two-dimensional scalar fields reconstruction of laminar flames from infrared hyperspectral measurements with a machine learning approach

T Ren, H Li, MF Modest, C Zhao - Journal of Quantitative Spectroscopy and …, 2021 - Elsevier
The latest hyperspectral measurements of combustion flames by Rhoby et al.(2014)
provided extensive spatially and spectrally resolved information of flame radiation, which …

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 …