Droplet sizing in atomizing sprays using polarization ratio with structured laser illumination planar imaging
(2023) In Optics Letters 48(15). p.4065-4068- Abstract
Previous research has shown that the polarization ratio technique allows the characterization of the surface mean diameter, D21, of droplets forming dilute sprays. However, its application to optically dense sprays has posed significant challenges due to the presence of multiple light scattering. Additionally, errors in measurement can arise from the angular dependence of the signal. In this Letter, we present a novel, to the best of our knowledge, method that addresses these challenges. Our approach combines the use of a telecentric objective with structured laser illumination, to both optimize light detection and suppress the unwanted intensity from multiple scattering. This approach enables the utilization of the... (More)
Previous research has shown that the polarization ratio technique allows the characterization of the surface mean diameter, D21, of droplets forming dilute sprays. However, its application to optically dense sprays has posed significant challenges due to the presence of multiple light scattering. Additionally, errors in measurement can arise from the angular dependence of the signal. In this Letter, we present a novel, to the best of our knowledge, method that addresses these challenges. Our approach combines the use of a telecentric objective with structured laser illumination, to both optimize light detection and suppress the unwanted intensity from multiple scattering. This approach enables the utilization of the polarization ratio technique for measuring the droplet size of challenging atomizing sprays. The method offers a promising solution for accurate and comprehensive spray characterization. It is applied, here, to a hollow-cone water spray running at 30, 50, and 70 bar injection pressure, reaching an optical depth up to three.
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- author
- Stiti, Mehdi LU ; Garcia, Sebastien ; Lempereur, Christine ; Doublet, Pierre ; Kristensson, Elias LU and Berrocal, Edouard LU
- organization
- publishing date
- 2023-08-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Optics Letters
- volume
- 48
- issue
- 15
- pages
- 4 pages
- publisher
- Optical Society of America
- external identifiers
-
- scopus:85166059635
- pmid:37527119
- ISSN
- 0146-9592
- DOI
- 10.1364/OL.495793
- language
- English
- LU publication?
- yes
- id
- 33f33d94-77d1-4a7a-a993-722e40b22bdf
- date added to LUP
- 2023-12-20 10:46:37
- date last changed
- 2024-12-13 21:57:01
@article{33f33d94-77d1-4a7a-a993-722e40b22bdf,
abstract = {{<p>Previous research has shown that the polarization ratio technique allows the characterization of the surface mean diameter, D<sub>21</sub>, of droplets forming dilute sprays. However, its application to optically dense sprays has posed significant challenges due to the presence of multiple light scattering. Additionally, errors in measurement can arise from the angular dependence of the signal. In this Letter, we present a novel, to the best of our knowledge, method that addresses these challenges. Our approach combines the use of a telecentric objective with structured laser illumination, to both optimize light detection and suppress the unwanted intensity from multiple scattering. This approach enables the utilization of the polarization ratio technique for measuring the droplet size of challenging atomizing sprays. The method offers a promising solution for accurate and comprehensive spray characterization. It is applied, here, to a hollow-cone water spray running at 30, 50, and 70 bar injection pressure, reaching an optical depth up to three.</p>}},
author = {{Stiti, Mehdi and Garcia, Sebastien and Lempereur, Christine and Doublet, Pierre and Kristensson, Elias and Berrocal, Edouard}},
issn = {{0146-9592}},
language = {{eng}},
month = {{08}},
number = {{15}},
pages = {{4065--4068}},
publisher = {{Optical Society of America}},
series = {{Optics Letters}},
title = {{Droplet sizing in atomizing sprays using polarization ratio with structured laser illumination planar imaging}},
url = {{http://dx.doi.org/10.1364/OL.495793}},
doi = {{10.1364/OL.495793}},
volume = {{48}},
year = {{2023}},
}