Laser diagnostics and their interplay with computations to understand turbulent combustion

Barlow, Robert S.

doi:10.1016/j.proci.2006.08.122

Cited by 212 publications

(94 citation statements)

References 141 publications

(361 reference statements)

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“…Over the last decade, progress within the field of optical diagnostics has produced tools that can provide data containing high levels of both spatial and temporal resolution [12][13][14][15]. These tools have allowed sequences of flame images, flame speed profiles, maps of velocity vectors, turbulence characteristics and species concentrations to be measured without disturbing the interactions being investigated.…”

Section: Introductionmentioning

confidence: 99%

Large Eddy Simulation and PIV Measurements of Unsteady Premixed Flames Accelerated by Obstacles

Sarli

Benedetto

Russo

et al. 2009

Flow Turbulence Combust

103

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Section: Introductionmentioning

confidence: 99%

Large Eddy Simulation and PIV Measurements of Unsteady Premixed Flames Accelerated by Obstacles

Sarli

Benedetto

Russo

et al. 2009

Flow Turbulence Combust

103

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“…242 The research is still too immature to determine if the methods mentioned above, or a completely new method, will triumph in the long run. The authors believe that the tomography approach will play a significant role in pursuing the ultimate goal of performing multi-dimension optical diagnostics and that comparing with other approaches is also crucial.…”

Section: Tomography Techniquesmentioning

confidence: 99%

Advanced Laser-Based Techniques for Gas-Phase Diagnostics in Combustion and Aerospace Engineering

Ehn

Zhu

et al. 2017

Appl Spectrosc

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Gaining information of species, temperature, and velocity distributions in turbulent combustion and high-speed reactive flows is challenging, particularly for conducting measurements without influencing the experimental object itself. The use of optical and spectroscopic techniques, and in particular laser-based diagnostics, has shown outstanding abilities for performing non-intrusive in situ diagnostics. The development of instrumentation, such as robust lasers with high pulse energy, ultra-short pulse duration, and high repetition rate along with digitized cameras exhibiting high sensitivity, large dynamic range, and frame rates on the order of MHz, has opened up for temporally and spatially resolved volumetric measurements of extreme dynamics and complexities. The aim of this article is to present selected important laser-based techniques for gas-phase diagnostics focusing on their applications in combustion and aerospace engineering. Applicable laser-based techniques for investigations of turbulent flows and combustion such as planar laser-induced fluorescence, Raman and Rayleigh scattering, coherent anti-Stokes Raman scattering, laser-induced grating scattering, particle image velocimetry, laser Doppler anemometry, and tomographic imaging are reviewed and described with some background physics. In addition, demands on instrumentation are further discussed to give insight in the possibilities that are offered by laser flow diagnostics.

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“…First, a complete survey, even a brief one, will be beyond the scope of this current paper because of the volume of past literature. Second, there already exist excellent monographs [3,4] and dedicated reviews [1,5] that provide a thorough discussion of past research in the non-intrusive measurement of temperature and chemical species.…”

Section: Introductionmentioning

confidence: 99%

50-kHz-rate 2D imaging of temperature and H_2O concentration at the exhaust plane of a J85 engine using hyperspectral tomography

Ma¹,

Li²,

Sanders³

et al. 2013

Opt. Express

191

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This paper describes a novel laser diagnostic and its demonstration in a practical aero-propulsion engine (General Electric J85). The diagnostic technique, named hyperspectral tomography (HT), enables simultaneous 2-dimensional (2D) imaging of temperature and water-vapor concentration at 225 spatial grid points with a temporal response up to 50 kHz. To our knowledge, this is the first time that such sensing capabilities have been reported. This paper introduces the principles of the HT techniques, reports its operation and application in a J85 engine, and discusses its perspective for the study of high-speed reactive flows.

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Laser diagnostics and their interplay with computations to understand turbulent combustion

Cited by 212 publications

References 141 publications

Large Eddy Simulation and PIV Measurements of Unsteady Premixed Flames Accelerated by Obstacles

Large Eddy Simulation and PIV Measurements of Unsteady Premixed Flames Accelerated by Obstacles

Advanced Laser-Based Techniques for Gas-Phase Diagnostics in Combustion and Aerospace Engineering

50-kHz-rate 2D imaging of temperature and H_2O concentration at the exhaust plane of a J85 engine using hyperspectral tomography

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