☆ 4.5 Article

Perspectives on instrumentation development for chemical species tomography in reactive-flow diagnosis

MEASUREMENT SCIENCE AND TECHNOLOGY (2023)

Related references

Note: Only part of the references are listed.

Article Automation & Control Systems

A Spatially Progressive Neural Network for Locally/Globally Prioritized TDLAS Tomography

Jingjing Si et al.

Summary: This article proposes a novel multioutput imaging neural network called SpaProNet, which can simultaneously achieve local combustion and radiation imaging in the entire sensing region. The network consists of locally and globally prioritized reconstruction stages, which enable hierarchical imaging of the combustion zone and fine-resolution imaging of the entire sensing region. Through simulation and experimental validation, the proposed network outperforms existing methods in terms of reconstruction accuracy in the combustion zone and turbulence-indicative diagnosis of heat radiation in the entire sensing region.

IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS (2023)

Add to Collection

Article Thermodynamics

Experimental and synthetic laser-absorption-spectroscopy measurements of temperature, pressure, and CO at 1 MHz for evaluation of post-detonation fireball models

Garrett C. Mathews et al.

Summary: In this study, a quantum-cascade-laser-absorption-spectroscopy (QCLAS) diagnostic was used to characterize post-detonation fireballs of RP-80 detonators. The measurements of temperature, pressure, and CO column pressure were conducted at a repetition rate of 1 MHz. The results indicate that the QCLAS diagnostic provides high-fidelity data for evaluating post-detonation fireball models, and assumptions regarding thermochemical equilibrium and carbon freeze-out during expansion of detonation gases have a large impact on the predicted chemical composition of the fireball.

PROCEEDINGS OF THE COMBUSTION INSTITUTE (2023)

Add to Collection

Review Thermodynamics

Volumetric emission tomography for combustion processes

Samuel J. Grauer et al.

Summary: This is a comprehensive review of volumetric emission tomography for combustion processes, providing detailed information on its principles, methods, and applications. By reconstructing and analyzing the light signals emitted by flames, valuable quantitative information can be extracted, which is crucial for evaluating numerical simulation results. The review also looks ahead to the future development of volumetric combustion diagnostics, with special attention to the application prospects of machine learning and spectrally-resolved volumetric measurement techniques.

PROGRESS IN ENERGY AND COMBUSTION SCIENCE (2023)

Add to Collection

Article Computer Science, Artificial Intelligence

CSTNet: A Dual-Branch Convolutional Neural Network for Imaging of Reactive Flows Using Chemical Species Tomography

Yunfan Jiang et al.

Summary: Chemical species tomography (CST) is used for in situ imaging of critical parameters in reactive flows. This study presents a novel convolutional neural network, CSTNet, for high-fidelity and rapid imaging of species concentration and temperature. CSTNet incorporates the CST measurements and sensor layout into the learning network and introduces a dual-branch decoder for image reconstructions. Experimental validation shows superior performance in terms of reconstruction accuracy and robustness to measurement noise.

IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS (2023)

Add to Collection

Article Optics

Theoretical investigation of applicability and limitations of advanced noise reduction methods for wavelength modulation spectroscopy

Lenard L. Roeder et al.

Summary: This study analyzes the applicability and limitations of several statistical and mathematical methods for noise reduction in wavelength modulation spectroscopy. The methods all show significant improvement in signal to noise ratio under specific conditions, but the optimal method depends on measurement conditions and cannot be compared in a general context.

APPLIED PHYSICS B-LASERS AND OPTICS (2022)

Add to Collection

Article Automation & Control Systems

Cost-Effective Quasi-Parallel Sensing Instrumentation for Industrial Chemical Species Tomography

Godwin Enemali et al.

Summary: This article presents a novel quasi-parallel sensing technique and electronic circuits for industrial chemical species tomography (CST). The proposed technique achieves cost-effective implementation of industrial CST with low complexity and reduced data transfer load by multiplexing the digitization and demodulation of multiple beam signals within a wavelength scan.

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS (2022)

Add to Collection

Article Optics

Effects of thermochemical non-uniformity on line-of-sight laser absorption thermometry in counterflow diffusion flames

Daxin Wen et al.

Summary: This work systematically investigates the effects of thermochemical non-uniformity on line-of-sight (LOS) laser absorption thermometry in counterflow diffusion flame (CDF). The results show that LOS-determined temperature is consistently lower than the core flame temperature, and the temperature deviations increase with the increase of thermochemical non-uniformity and core flame temperature.

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER (2022)

Add to Collection

Article Engineering, Multidisciplinary

New transform to project axisymmetric deflection fields along arbitrary rays

T. A. Sipkens et al.

Summary: Axisymmetric tomography is an important technique for extracting quantitative information from gas flow and combustion fields. However, traditional reconstruction algorithms based on the inverse Abel transform may introduce significant errors in practical imaging scenarios. This study presents a new transform that models the exact path of camera rays, improving the accuracy of reconstructions.

MEASUREMENT SCIENCE AND TECHNOLOGY (2022)

Add to Collection

Article Engineering, Multidisciplinary

Flow field tomography with uncertainty quantification using a Bayesian physics-informed neural network

Joseph P. Molnar et al.

Summary: We introduce a new approach to flow field tomography using the Navier-Stokes and advection-diffusion equations for regularization. Through the use of physics-informed neural networks (PINNs), we are able to leverage the governing physics to improve the accuracy of flow field reconstructions from sparse line-of-sight integrated measurements. Our results demonstrate that PINNs outperform state-of-the-art algorithms in terms of accuracy, even when used for post-processing. However, high levels of noise can lead to semi-convergence, which we address with a Bayesian PINN that allows for uncertainty quantification and reveals the source of semi-convergence.

MEASUREMENT SCIENCE AND TECHNOLOGY (2022)

Add to Collection

Article Thermodynamics

On the Quantification of Boundary Layer Effects on Flame Temperature Measurements Using Line-of-sight Absorption Spectroscopy

Liuhao Ma et al.

Summary: The study focused on the boundary layer effects on flame temperature measurements using line-of-sight absorption spectroscopy, identifying that the thermal boundary layer has a significant impact on temperature deviation, while changes in species concentration have a negligible effect. By systematically investigating selected line pairs, a reduction of temperature deviation by up to 16.8% was achieved under typical laminar flame conditions, recommending a specific line pair for temperature measurements over a range of 1400-2200 K.

COMBUSTION SCIENCE AND TECHNOLOGY (2022)

Add to Collection

Article Engineering, Multidisciplinary

Extended tuning of distributed-feedback lasers in a bias-tee circuit via waveform optimization for MHz-rate absorption spectroscopy

Anil P. Nair et al.

Summary: This study investigates the variations in injection-current waveform using diplexed radio-frequency modulation with continuous-wave distributed-feedback lasers to maximize the tuning range and signal-to-noise ratio for MHz-rate laser absorption spectroscopy. The research achieves a spectral scan depth of approximately 1 cm(-1) at a scan frequency of 1 MHz and establishes an optimization approach for different detection bandwidths and target spectra.

MEASUREMENT SCIENCE AND TECHNOLOGY (2022)

Add to Collection

Review Thermodynamics

Laser sensors for energy systems and process industries: Perspectives and directions

Aamir Farooq et al.

Summary: This paper presents the applications of laser absorption spectroscopy (LAS) sensors in energy systems and process industries, discussing their advantages and recent advancements. The paper also compares LAS with other laser sensing techniques and proposes suggestions for future developments.

PROGRESS IN ENERGY AND COMBUSTION SCIENCE (2022)

Add to Collection

Article Chemistry, Analytical

Tomographic Absorption Spectroscopy for H2O Transport in a Laminar Jet with Inverse Concentration Gradient

Kin-Pang Cheong et al.

Summary: In this study, tomographic absorption spectroscopy (TAS) was used to investigate the transport of water vapor in a laminar jet. The ambient water vapor was used as the absorbing species, and the absorption line near 1368.598 nm was used for analysis. The experiments were validated using computational fluid dynamics (CFD) simulations, and the concentration gradients in the shear layer at different heights were observed. The 2D distribution of water concentration in the dry laminar jet was also obtained.

SENSORS (2022)

Add to Collection

Article Optics

Tomographic imaging of carbon dioxide in the exhaust plume of large commercial aero-engines

Abhishek Upadhyay et al.

Summary: This article reports the first attempt to implement chemically specific imaging in the exhaust plume of a gas turbine typical of those used for propulsion in commercial aircraft. The method used is chemical species tomography (CST), and the target species is CO2, which absorbs in the near-infrared at 1999.4 nm. The CO2 absorption spectrum is measured using tunable diode laser spectroscopy with wavelength modulation. The results of the study provide valuable insights for turbine combustion research, turbine engine development, and aviation fuel research and development.

APPLIED OPTICS (2022)

Add to Collection

Article Chemistry, Analytical

Photothermal multi-species detection in a hollow-core fiber with frequency-division multiplexing

Zhen Wang et al.

Summary: A photothermal gas sensor has been developed for simultaneous multi-species detection in a hollow-core fiber. By utilizing the frequency-division multiplexing technique, the sensor achieves high sensitivity, compact size, and low gas consumption.

SENSORS AND ACTUATORS B-CHEMICAL (2022)

Add to Collection

Article Optics

Multi-line Boltzmann regression for near-electronvolt temperature and CO sensing via MHz-rate infrared laser absorption spectroscopy

Nicolas Q. Minesi et al.

Summary: A mid-infrared laser absorption technique is developed for simultaneous sensing of temperature and carbon monoxide number density. Multiple rovibrational lines are resolved using a trapezoidal waveform modulation. Number density and temperature are calculated using a Boltzmann regression, providing higher accuracy than the single line pair method. The sensor is validated in experiments and is suitable for investigations of high-speed flows, plasma applications, and high-pressure detonations.

APPLIED PHYSICS B-LASERS AND OPTICS (2022)

Add to Collection

Article Thermodynamics

Phase-locked absorption tomography for retrieving 5 kHz time-resolved tracer profiles in solid fuel combustion

Johannes Emmert et al.

Summary: This article proposes spectrally resolved absorption tomography as a viable tool for quantitatively assessing species transport. The results show that this method can reveal species transport in recirculation zones and flame brushes, detect qualitative differences between methane combustion and gas-assisted solid-fuel operating conditions, and visualize the influences of devolatilization and volatile combustion.

APPLICATIONS IN ENERGY AND COMBUSTION SCIENCE (2022)

Add to Collection

Article Engineering, Electrical & Electronic

Command Filter-Based Adaptive Fuzzy Finite-Time Output Feedback Control of Nonlinear Electrohydraulic Servo System

Jiafeng Li et al.

Summary: In this article, a command filter-based adaptive fuzzy finite-time output feedback control method is investigated for the electrohydraulic servo system. Uncertainties in the system are estimated using fuzzy logic systems (FLSs), and a fuzzy state observer is established to approximate unmeasurable parameters. A command filter-based control method is proposed to achieve high tracking precision. Simulation results demonstrate the effectiveness of the proposed control.

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT (2022)

Add to Collection

Article Engineering, Multidisciplinary

Quantifying the spatial resolution of the maximum a posteriori estimate in linear, rank-deficient, Bayesian hard field tomography

Johannes Emmert et al.

Summary: This study proposes a statistical spatial resolution measure based on the covariance of the reconstruction, taking into account the statistical prior information for rank-deficient tomography in chemical species imaging. The method can serve as a reference for designing tomographic systems considering the spatial inhomogeneity of spatial resolution.

MEASUREMENT SCIENCE AND TECHNOLOGY (2021)

Add to Collection

Article Thermodynamics

Time-resolved, single-ended laser absorption thermometry and H2O, CO2, and CO speciation in a H2/C2H4-fueled rotating detonation engine

Sean J. Cassady et al.

Summary: Rotating detonation engines (RDEs) require novel diagnostic tools for better understanding complex detonation behavior and improving performance. A single-ended laser absorption sensor has been developed and deployed for in situ, time-resolved measurements of temperature and gas species concentrations in the annulus of a hydrogen/ethylene/air-fed RDE. With a measurement rate of 44 kS/s, the sensor can provide high-quality data for gas temperature and species.

PROCEEDINGS OF THE COMBUSTION INSTITUTE (2021)

Add to Collection

Article Optics

High-bandwidth absorption-spectroscopy measurements of temperature, pressure, CO, and H2O in the annulus of a rotating detonation rocket engine

Garrett C. Mathews et al.

Summary: This article presents the development and application of two laser-absorption-spectroscopy diagnostics for high-bandwidth measurements in the annular combustion chamber of a rotating detonation rocket engine (RDRE). These diagnostics are capable of measuring temperature, pressure, CO, and H2O concentrations using quantum-cascade lasers and tunable diode lasers. The measurements obtained provide valuable insights into the combustion process of the RDRE, especially at different equivalence ratios and propellant mass flow rates.

APPLIED PHYSICS B-LASERS AND OPTICS (2021)

Add to Collection

Article Engineering, Multidisciplinary

Robust cepstral analysis at variable wavelength scan depth for narrowband tunable laser absorption spectroscopy

Jidong Li et al.

Summary: This work focuses on optimizing the m-FID method for laser absorption spectroscopy under conditions of variable baseline distortion. The study provides guidance on parameter selection and sensitivity analysis to different types of baseline distortion. Experimental demonstration of the technique targeting CO2 transition was performed to show its effectiveness.

MEASUREMENT SCIENCE AND TECHNOLOGY (2021)

Add to Collection

Article Thermodynamics

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

Chuyu Wei et al.

Summary: In this study, mid-infrared laser absorption imaging was utilized to reconstruct flame temperature and species concentration in three dimensions using linear tomographic methods with Tikhonov regularization. By improving the regularization method and adjusting the number of projection angles, the reconstruction accuracy was effectively enhanced.

COMBUSTION AND FLAME (2021)

Add to Collection

Article Optics

Resolving nonuniform temperature distributions with single-beam absorption spectroscopy. Part I: Theoretical capabilities and limitations

Nathan A. Malarich et al.

Summary: Absorption spectroscopy is used to determine gas temperature and species concentration along a laser line-of-sight, with the potential to improve temperature resolution by measuring more absorption transitions. The study introduces a singular value decomposition framework to explore theoretical limits of resolving temperature distributions, finding that only about 14 well-selected absorption features can enhance temperature resolution without measurement noise or error.

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER (2021)

Add to Collection

Article Thermodynamics

Multispectral infrared absorption spectroscopy for quantitative temperature measurements in axisymmetric laminar premixed sooting flames

Liuhao Ma et al.

Summary: Multispectral infrared absorption spectroscopy was developed for in situ, non-intrusive and quantitative measurements of temperature distributions in laminar premixed ethylene/air sooting flames. The experimental results showed that this method could accurately capture the temperature field and exhibit good agreement with the thermocouple data, providing a promising technique for combustion diagnostics.

CASE STUDIES IN THERMAL ENGINEERING (2021)

Add to Collection

Article Optics

Resolving nonuniform temperature distributions with single-beam absorption spectroscopy. Part II: Implementation from broadband spectra

Nathan A. Malarich et al.

Summary: This study introduces a new laser absorption spectroscopy technique for determining temperature distributions in nonuniform environments. By using the E''-binning spectral fitting method, temperature distributions can be accurately determined. The use of dual frequency comb laser measurements to resolve convection cells demonstrated accurate temperature distributions consistent with a natural convection model.

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER (2021)

Add to Collection

Article Optics

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

Chuyu Wei et al.

Summary: A deep learning method was developed to predict temperature and species fields in flames by integrating physical priors related to flow-field thermochemistry and transport. The method was evaluated through numerical simulation and experimental testing, showing that the learning-based approach can more accurately predict species and temperature fields of the flame compared to classical methods.

OPTICS EXPRESS (2021)

Add to Collection

Article Engineering, Electrical & Electronic

An FPGA-Based On-Chip Neural Network for TDLAS Tomography in Dynamic Flames

Ang Huang et al.

Summary: A back propagation neural network is implemented on a field programmable gate array chip for tunable diode laser absorption spectroscopy tomography, achieving fast response and high signal-to-noise ratio in temperature and water concentration imaging. The method effectively reduces noise distortions in normalized second harmonics and average temperature in real experiments, showcasing more details in dynamic flame monitoring compared to typical quadrature demodulators. This approach demonstrates improved performance on the FPGA chip and enhances the accuracy of temperature and water vapor molar concentration distribution reconstruction.

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT (2021)

Add to Collection

Article Engineering, Electrical & Electronic

Low-Noise Magnetic Coil System for Recording 3-D Eye Movements

Kristin N. Hageman et al.

Summary: This study presents a new magnetic coil system optimized for recording 3-D eye movements with high precision and accuracy in small animals. By utilizing an FPGA for digital demodulation, the system is able to provide real-time output at a high sampling rate, resulting in improved performance compared to older analog-based systems.

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT (2021)

Add to Collection

Article Optics

Two-color frequency-multiplexed IMS technique for gas thermometry at elevated pressures

Wei Wei et al.

APPLIED PHYSICS B-LASERS AND OPTICS (2020)

Add to Collection

Article Engineering, Electrical & Electronic

A Custom, High-Channel Count Data Acquisition System for Chemical Species Tomography of Aero-Jet Engine Exhaust Plumes

Edward M. D. Fisher et al.

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT (2020)

Add to Collection

Article Engineering, Multidisciplinary

Application of 2D temperature measurement to a coal-fired furnace using CT-TDLAS

Zhenzhen Wang et al.

MEASUREMENT SCIENCE AND TECHNOLOGY (2020)

Add to Collection

Article Engineering, Electrical & Electronic

A WMS Based TDLAS Tomographic System for Distribution Retrievals of Both Gas Concentration and Temperature in Dynamic Flames

Wenshuai Zhao et al.

IEEE SENSORS JOURNAL (2020)

Add to Collection

Article Optics

Cepstral analysis for baseline-insensitive absorption spectroscopy using light sources with pronounced intensity variations

Christopher S. Goldenstein et al.

APPLIED OPTICS (2020)

Add to Collection

Article Optics

MHz laser absorption spectroscopy via diplexed RF modulation for pressure, temperature, and species in rotating detonation rocket flows

Anil P. Nair et al.

APPLIED PHYSICS B-LASERS AND OPTICS (2020)

Add to Collection

Article Optics

Laser absorption tomography for ammonia measurement in diesel engine exhaust

Ehson F. Nasir et al.

APPLIED PHYSICS B-LASERS AND OPTICS (2020)

Add to Collection

Review Optics

Particle image velocimetry - Classical operating rules from today's perspective

Sven Scharnowski et al.

OPTICS AND LASERS IN ENGINEERING (2020)

Add to Collection

Article Optics

MHz-rate scanned-wavelength direct absorption spectroscopy using a distributed feedback diode laser at 2.3 μm

Mohsin Raza et al.

OPTICS AND LASER TECHNOLOGY (2020)

Add to Collection

Article Optics

Spatially and temporally resolved temperature measurements in counterflow flames using a single interband cascade laser

Daxin Wen et al.

OPTICS EXPRESS (2020)

Add to Collection

Article Engineering, Electrical & Electronic

Frequency-Division Multiplexing and Main Peak Scanning WMS Method for TDLAS Tomography in Flame Monitoring

Ang Huang et al.

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT (2020)

Add to Collection

Review Instruments & Instrumentation

Laser absorption spectroscopy for combustion diagnosis in reactive flows: A review

Chang Liu et al.

APPLIED SPECTROSCOPY REVIEWS (2019)

Add to Collection

Article Engineering, Electrical & Electronic

Toward Customized Spatial Resolution in TDLAS Tomography

Chang Liu et al.

IEEE SENSORS JOURNAL (2019)

Add to Collection

Article Computer Science, Interdisciplinary Applications

Physics-informed neural networks: A deep learning framework for solving forward and inverse problems involving nonlinear partial differential equations

M. Raissi et al.

JOURNAL OF COMPUTATIONAL PHYSICS (2019)

Add to Collection

Article Optics

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

Ryan J. Tancin et al.

OPTICS EXPRESS (2019)

Add to Collection

Article Engineering, Multidisciplinary

Multiparameter gas sensing with linear hyperspectral absorption tomography

Samuel J. Grauer et al.

MEASUREMENT SCIENCE AND TECHNOLOGY (2019)

Add to Collection

Review Chemistry, Multidisciplinary

Laser Absorption Sensing Systems: Challenges, Modeling, and Design Optimization

Zhenhai Wang et al.

APPLIED SCIENCES-BASEL (2019)

Add to Collection

Article Optics

Cross-band infrared laser absorption of carbon monoxide for thermometry and species sensing in high-pressure rocket flows

Fabio A. Bendana et al.

APPLIED PHYSICS B-LASERS AND OPTICS (2019)

Add to Collection

Article Optics

Intra-pulse H2O absorption diagnostic for temperature sensing in a rapid compression machine

Ehson F. Nasir et al.

APPLIED PHYSICS B-LASERS AND OPTICS (2019)

Add to Collection

Article Optics

Quantitative analysis of ammonia adsorption in Ag/AgI-coated hollow waveguide by mid-infrared laser absorption spectroscopy

Jinyi Li et al.

OPTICS AND LASERS IN ENGINEERING (2019)

Add to Collection

Review Engineering, Aerospace

Principles of non-intrusive diagnostic techniques and their applications for fundamental studies of combustion instabilities in gas turbine combustors: A brief review

Can Ruan et al.

AEROSPACE SCIENCE AND TECHNOLOGY (2019)

Add to Collection

Article Instruments & Instrumentation

Influence of Line Pair Selection on Flame Tomography Using Infrared Absorption Spectroscopy

Kin-Pang Cheong et al.

APPLIED SPECTROSCOPY (2019)

Add to Collection

Article Chemistry, Multidisciplinary

Measurement Enhancement on Two-Dimensional Temperature Distribution of Methane-Air Premixed Flame Using SMART Algorithm in CT-TDLAS

Min-Gyu Jeon et al.

APPLIED SCIENCES-BASEL (2019)

Add to Collection

Article Physics, Multidisciplinary

A Near-Infrared Trace CO2 Detection System Based on an 1,580 nm Tunable Diode Laser Using a Cascaded Integrator Comb (CIC) Filter-Assisted Wavelength Modulation Technique and a Digital Lock-in Amplifier

Guolin Li et al.

FRONTIERS IN PHYSICS (2019)

Add to Collection

Article Optics

Baseline-free quantitative absorption spectroscopy based on cepstral analysis

Ryan K. Cole et al.

OPTICS EXPRESS (2019)

Add to Collection

Article Thermodynamics

Chemical species tomographic imaging of the vapour fuel distribution in a compression-ignition engine

Stylianos-Alexios Tsekenis et al.

INTERNATIONAL JOURNAL OF ENGINE RESEARCH (2018)

Add to Collection

Article Optics

Mid-infrared laser absorption tomography for quantitative 2D thermochemistry measurements in premixed jet flames

Chuyu Wei et al.

APPLIED PHYSICS B-LASERS AND OPTICS (2018)

Add to Collection

Article Optics

Two-dimensional temperature and carbon dioxide concentration profiles in atmospheric laminar diffusion flames measured by mid-infrared direct absorption spectroscopy at 4.2 mu m

Xunchen Liu et al.

APPLIED PHYSICS B-LASERS AND OPTICS (2018)

Add to Collection

Article Engineering, Electrical & Electronic

FPGA-Based Real-Time Implementation of Temperature Measurement via Tunable Diode Laser Absorption Spectroscopy

Lijun Xu et al.

IEEE SENSORS JOURNAL (2018)

Add to Collection

Article Engineering, Electrical & Electronic

Online Cross-Sectional Monitoring of a Swirling Flame Using TDLAS Tomography

Chang Liu et al.

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT (2018)

Add to Collection

Article Optics

Reconstruction for limited-data nonlinear tomographic absorption spectroscopy via deep learning

Jianqing Huang et al.

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER (2018)

Add to Collection

Article Optics

Two-color volumetric laser-induced fluorescence for 3D OH and temperature fields in turbulent reacting flows

B. R. Halls et al.

OPTICS LETTERS (2018)

Add to Collection

Article Optics

Tomographic laser absorption imaging of combustion species and temperature in the mid-wave infrared

Chuyu Wei et al.

OPTICS EXPRESS (2018)

Add to Collection

Article Optics

Temporally resolved two dimensional temperature field of acoustically excited swirling flames measured by mid-infrared direct absorption spectroscopy

Xunchen Liu et al.

OPTICS EXPRESS (2018)

Add to Collection

Article Optics

Constrained models for optical absorption tomography

Nick Polydorides et al.

APPLIED OPTICS (2018)

Add to Collection

Article Engineering, Electrical & Electronic

Optical Access Schemes for High Speed and Spatial Resolution Optical Absorption Tomography in Energy Engineering

Stylianos-Alexios Tsekenis et al.

IEEE SENSORS JOURNAL (2017)

Add to Collection

Article Engineering, Electrical & Electronic

A Reconfigurable Parallel Data Acquisition System for Tunable Diode Laser Absorption Spectroscopy Tomography

Wenyang Jing et al.

IEEE SENSORS JOURNAL (2017)

Add to Collection

Article Optics

Broadband chemical species tomography: Measurement theory and a proof-of-concept emission detection experiment

Samuel J. Grauer et al.

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER (2017)

Add to Collection

Article Optics

Measurement-based meshing, basis selection, and prior assignment in chemical species tomography

Samuel J. Grauer et al.

OPTICS EXPRESS (2017)

Add to Collection

Article Optics

Ammonia concentration distribution measurements in the exhaust of a heavy duty diesel engine based on limited data absorption tomography

Felix Stritzke et al.

OPTICS EXPRESS (2017)

Add to Collection

Article Optics

Direct comparison of two-dimensional and three-dimensional laser-induced fluorescence measurements on highly turbulent flames

Lin Ma et al.

OPTICS LETTERS (2017)

Add to Collection

Article Thermodynamics

Time-resolved temperature measurements in a rapid compression machine using quantum cascade laser absorption in the intrapulse mode

Ehson F. Nasir et al.

PROCEEDINGS OF THE COMBUSTION INSTITUTE (2017)

Add to Collection

Review Thermodynamics

Infrared laser-absorption sensing for combustion gases

Christopher S. Goldenstein et al.

PROGRESS IN ENERGY AND COMBUSTION SCIENCE (2017)

Add to Collection

Review Thermodynamics

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

Weiwei Cai et al.

PROGRESS IN ENERGY AND COMBUSTION SCIENCE (2017)

Add to Collection

Article Optics

H2O absorption tomography in a diesel aftertreatment system using a polymer film for optical access

Ze Wang et al.

APPLIED PHYSICS B-LASERS AND OPTICS (2017)

Add to Collection

Article Optics

Instantaneous 3D imaging of highly turbulent flames using computed tomography of chemiluminescence

Khadijeh Mohri et al.

APPLIED OPTICS (2017)

Add to Collection

Article Optics

Tomographic imaging of reacting flows in 3D by laser absorption spectroscopy

J. Foo et al.

APPLIED PHYSICS B-LASERS AND OPTICS (2017)

Add to Collection

Article Optics

High-speed combustion diagnostics in a rapid compression machine by broadband supercontinuum absorption spectroscopy

Thomas Werblinski et al.

APPLIED OPTICS (2017)

Add to Collection

Article Optics

Improving chemical species tomography of turbulent flows using covariance estimation

Samuel J. Grauer et al.

APPLIED OPTICS (2017)

Add to Collection

Article Optics

Benchmark evaluation of inversion algorithms for tomographic absorption spectroscopy

Tao Yu et al.

APPLIED OPTICS (2017)

Add to Collection

Article Optics

Non-uniform temperature and species concentration measurements in a laminar flame using multi-band infrared absorption spectroscopy

Liu Hao Ma et al.

APPLIED PHYSICS B-LASERS AND OPTICS (2017)

Add to Collection

Article Engineering, Multidisciplinary

Broadband fitting approach for the application of supercontinuum broadband laser absorption spectroscopy to combustion environments

Niels Goeran Blume et al.

MEASUREMENT SCIENCE AND TECHNOLOGY (2016)

Add to Collection

Article Optics

Chemical species tomography of turbulent flows: Discrete ill-posed and rank deficient problems and the use of prior information

Kyle J. Daun et al.

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER (2016)

Add to Collection

Article Instruments & Instrumentation

Tunable diode laser absorption spectroscopy-based tomography system for on-line monitoring of two-dimensional distributions of temperature and H2O mole fraction

Lijun Xu et al.

REVIEW OF SCIENTIFIC INSTRUMENTS (2016)

Add to Collection

Article Optics

Bayesian approach to the design of chemical species tomography experiments

Samuel J. Grauer et al.

APPLIED OPTICS (2016)

Add to Collection

Article Optics

Supercontinuum based absorption spectrometer for cycle-resolved multiparameter measurements in a rapid compression machine

Thomas Werblinski et al.

APPLIED OPTICS (2016)

Add to Collection

Article Optics

A numerical investigation of high-resolution multispectral absorption tomography for flow thermometry

Weiwei Cai et al.

APPLIED PHYSICS B-LASERS AND OPTICS (2015)

Add to Collection

Article Optics

Simultaneous measurement of 2-dimensional H2O concentration and temperature distribution in premixed methane/air flame using TDLAS-based tomography technology

Fei Wang et al.

OPTICS COMMUNICATIONS (2015)

Add to Collection

Article Optics

Development of a fan-beam TDLAS-based tomographic sensor for rapid imaging of temperature and gas concentration

Chang Liu et al.

OPTICS EXPRESS (2015)

Add to Collection

Article Optics

Broadband supercontinuum laser absorption spectrometer for multiparameter gas phase combustion diagnostics

Niels Goeran Blume et al.

OPTICS LETTERS (2015)

Add to Collection

Article Thermodynamics

Towards simultaneous calibration-free and ultra-fast sensing of temperature and species in the intrapulse mode

Robin S. M. Chrystie et al.

PROCEEDINGS OF THE COMBUSTION INSTITUTE (2015)

Add to Collection

Article Instruments & Instrumentation

Spatially resolved and observer-free experimental quantification of spatial resolution in tomographic images

S. A. Tsekenis et al.

REVIEW OF SCIENTIFIC INSTRUMENTS (2015)

Add to Collection

Article Thermodynamics

Tomographic imaging of the liquid and vapour fuel distributions in a single-cylinder direct-injection gasoline engine

Natasa Terzija et al.

INTERNATIONAL JOURNAL OF ENGINE RESEARCH (2015)

Add to Collection

Article Physics, Applied

A tomographic technique for the simultaneous imaging of temperature, chemical species, and pressure in reactive flows using absorption spectroscopy with frequency-agile lasers

Weiwei Cai et al.

APPLIED PHYSICS LETTERS (2014)

Add to Collection

Review Instruments & Instrumentation

A Review of Signal Enhancement and Noise Reduction Techniques for Tunable Diode Laser Absorption Spectroscopy

Jingsong Li et al.

APPLIED SPECTROSCOPY REVIEWS (2014)

Add to Collection

Article Thermodynamics

Applications of laser diagnostics to thermal power plants and engines

Y. Deguchi et al.

APPLIED THERMAL ENGINEERING (2014)

Add to Collection

Article Optics

Measurement of nonuniform temperature and concentration distributions by combining line-of-sight tunable diode laser absorption spectroscopy with regularization methods

Chang Liu et al.

APPLIED OPTICS (2013)

Add to Collection

Article Optics

Two-color absorption spectroscopy strategy for measuring the column density and path average temperature of the absorbing species in nonuniform gases

Christopher S. Goldenstein et al.

APPLIED OPTICS (2013)

Add to Collection

Article Chemistry, Analytical

Low-Loss Hollow Waveguide Fibers for Mid-Infrared Quantum Cascade Laser Sensing Applications

Pietro Patimisco et al.

SENSORS (2013)

Add to Collection

Article Optics

50-kHz-rate 2D imaging of temperature and H2O concentration at the exhaust plane of a J85 engine using hyperspectral tomography

Lin Ma et al.

OPTICS EXPRESS (2013)

Add to Collection

Article Mathematics, Applied

Investigation of temperature parallel simulated annealing for optimizing continuous functions with application to hyperspectral tomography

Weiwei Cai et al.

APPLIED MATHEMATICS AND COMPUTATION (2011)

Add to Collection

Article Optics

Towards a two-dimensional concentration and temperature laser absorption tomography sensor system

V. L. Kasyutich et al.

APPLIED PHYSICS B-LASERS AND OPTICS (2011)

Add to Collection

Article Chemistry, Physical

Real-time diagnostics of a jet engine exhaust using an intra-pulse quantum cascade laser spectrometer

Geoffrey Duxbury et al.

MOLECULAR PHYSICS (2011)

Add to Collection

Review Thermodynamics

Visualization and understanding of combustion processes using spatially and temporally resolved laser diagnostic techniques

Marcus Alden et al.

PROCEEDINGS OF THE COMBUSTION INSTITUTE (2011)

Add to Collection

Article Engineering, Environmental

High-speed chemical species tomography in a multi-cylinder automotive engine

Paul Wright et al.

CHEMICAL ENGINEERING JOURNAL (2010)

Add to Collection

Article Optics

Tomographic imaging of temperature and chemical species based on hyperspectral absorption spectroscopy

Lin Ma et al.

OPTICS EXPRESS (2009)

Add to Collection

Article Optics

Calibration-free wavelength-modulation spectroscopy for measurements of gas temperature and concentration in harsh environments

Gregory B. Rieker et al.

APPLIED OPTICS (2009)

Add to Collection

Article Engineering, Multidisciplinary

Image optimization for chemical species tomography with an irregular and sparse beam array

N. Terzija et al.

MEASUREMENT SCIENCE AND TECHNOLOGY (2008)

Add to Collection

Article Optics

Numerical investigation of hyperspectral tomography for simultaneous temperature and concentration imaging

Lin Ma et al.

APPLIED OPTICS (2008)

Add to Collection

Article Optics

High speed engine gas thermometry by Fourier-domain mode-locked laser absorption spectroscopy

Laura A. Kranendonk et al.

OPTICS EXPRESS (2007)

Add to Collection

Article Engineering, Aerospace

Measurement of nonuniform temperature distributions using line-of-sight absorption spectroscopy

Xiang Liu et al.

AIAA JOURNAL (2007)

Add to Collection

Article Engineering, Electrical & Electronic

Design of high-performance photodiode receivers for optical tomography

P Wright et al.

IEEE SENSORS JOURNAL (2005)

Add to Collection

Article Engineering, Electrical & Electronic

Measurement of gaseous hydrocarbon distribution by a near-infrared absorption tomography system

FP Hindle et al.

JOURNAL OF ELECTRONIC IMAGING (2001)

Add to Collection

© Peeref 2019-2024. All rights reserved.