Single-shot 3D flame diagnostic based on volumetric laser induced fluorescence (VLIF)

Lin Ma; Qingchun Lei; Jordan Ikeda; Wenjiang Xu; Yue Wu; Campbell D. Carter

doi:10.1016/j.proci.2016.07.050

Single-shot 3D flame diagnostic based on volumetric laser induced fluorescence (VLIF)

Lin Ma, Qingchun Lei, Jordan Ikeda, Wenjiang Xu, Yue Wu, Campbell D. Carter

St. Anthony Falls Laboratory

Research output: Contribution to journal › Article › peer-review

70 Scopus citations

Abstract

Single-shot three-dimensional (3D) CH₄ flame measurements based on volumetric laser-induced fluorescence (VLIF) were demonstrated. The excitation laser beam was expanded to a height of 40 mm and thickness of 10 mm to excite the CH radicals in the target flames. The VLIF method combined LIF with tomography to enable 3D measurements and single-shot measurements were shown based on CH in a 9.3 X 9.3 X 32.7 mm³ with 0.15 mm voxel size. The LIF photons emitted volumetrically were captured by five intensified cameras simultaneously and these projections were utilized as inputs to a tomography algorithm to reconstruct the 3D distribution of CH which can then be used to obtain other flame properties in 3D.Measurements were first done on stable laminar flames for comparison and validation against planar laser-induced fluorescence and then on turbulent jet flames to show the feasibility and accuracy of VLIF for instantaneous 3D flame measurements and motivate further studies.

Original language	English (US)
Pages (from-to)	4575-4583
Number of pages	9
Journal	Proceedings of the Combustion Institute
Volume	36
Issue number	3
DOIs	https://doi.org/10.1016/j.proci.2016.07.050
State	Published - 2017

Bibliographical note

Funding Information:
This work is supported by the U.S. Air Force Office of Scientific Research (AFOSR, Grant FA9550-14-1-0386), and a 2015 U.S. Air Force Summer Faculty Fellowship. We are also grateful to Dr. Tonghun Lee (University of Illinois) and Dr. James R. Gord (Air Force Research Laboratory) for the loan of equipment.

Keywords

3D diagnostics
Tomography
Volumetric laser induced fluorescence (VLIF)

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title = "Single-shot 3D flame diagnostic based on volumetric laser induced fluorescence (VLIF)",

abstract = "Single-shot three-dimensional (3D) CH4 flame measurements based on volumetric laser-induced fluorescence (VLIF) were demonstrated. The excitation laser beam was expanded to a height of 40 mm and thickness of 10 mm to excite the CH radicals in the target flames. The VLIF method combined LIF with tomography to enable 3D measurements and single-shot measurements were shown based on CH in a 9.3 X 9.3 X 32.7 mm3 with 0.15 mm voxel size. The LIF photons emitted volumetrically were captured by five intensified cameras simultaneously and these projections were utilized as inputs to a tomography algorithm to reconstruct the 3D distribution of CH which can then be used to obtain other flame properties in 3D.Measurements were first done on stable laminar flames for comparison and validation against planar laser-induced fluorescence and then on turbulent jet flames to show the feasibility and accuracy of VLIF for instantaneous 3D flame measurements and motivate further studies.",

keywords = "3D diagnostics, Tomography, Volumetric laser induced fluorescence (VLIF)",

author = "Lin Ma and Qingchun Lei and Jordan Ikeda and Wenjiang Xu and Yue Wu and Carter, {Campbell D.}",

note = "Funding Information: This work is supported by the U.S. Air Force Office of Scientific Research (AFOSR, Grant FA9550-14-1-0386), and a 2015 U.S. Air Force Summer Faculty Fellowship. We are also grateful to Dr. Tonghun Lee (University of Illinois) and Dr. James R. Gord (Air Force Research Laboratory) for the loan of equipment.",

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AU - Xu, Wenjiang

AU - Wu, Yue

AU - Carter, Campbell D.

N1 - Funding Information: This work is supported by the U.S. Air Force Office of Scientific Research (AFOSR, Grant FA9550-14-1-0386), and a 2015 U.S. Air Force Summer Faculty Fellowship. We are also grateful to Dr. Tonghun Lee (University of Illinois) and Dr. James R. Gord (Air Force Research Laboratory) for the loan of equipment.

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N2 - Single-shot three-dimensional (3D) CH4 flame measurements based on volumetric laser-induced fluorescence (VLIF) were demonstrated. The excitation laser beam was expanded to a height of 40 mm and thickness of 10 mm to excite the CH radicals in the target flames. The VLIF method combined LIF with tomography to enable 3D measurements and single-shot measurements were shown based on CH in a 9.3 X 9.3 X 32.7 mm3 with 0.15 mm voxel size. The LIF photons emitted volumetrically were captured by five intensified cameras simultaneously and these projections were utilized as inputs to a tomography algorithm to reconstruct the 3D distribution of CH which can then be used to obtain other flame properties in 3D.Measurements were first done on stable laminar flames for comparison and validation against planar laser-induced fluorescence and then on turbulent jet flames to show the feasibility and accuracy of VLIF for instantaneous 3D flame measurements and motivate further studies.

AB - Single-shot three-dimensional (3D) CH4 flame measurements based on volumetric laser-induced fluorescence (VLIF) were demonstrated. The excitation laser beam was expanded to a height of 40 mm and thickness of 10 mm to excite the CH radicals in the target flames. The VLIF method combined LIF with tomography to enable 3D measurements and single-shot measurements were shown based on CH in a 9.3 X 9.3 X 32.7 mm3 with 0.15 mm voxel size. The LIF photons emitted volumetrically were captured by five intensified cameras simultaneously and these projections were utilized as inputs to a tomography algorithm to reconstruct the 3D distribution of CH which can then be used to obtain other flame properties in 3D.Measurements were first done on stable laminar flames for comparison and validation against planar laser-induced fluorescence and then on turbulent jet flames to show the feasibility and accuracy of VLIF for instantaneous 3D flame measurements and motivate further studies.

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Single-shot 3D flame diagnostic based on volumetric laser induced fluorescence (VLIF)

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