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3D droplet sizing and 2D optical depth measurements in sprays using SLIPI based techniques

Mishra, Yogeshwar Nath LU ; Kristensson, Elias LU and Berrocal, Edouard LU (2016) p.01-01
Abstract
While imaging optically dense media such as atomizing sprays, the multiple light scattering induces image artifacts and blurring effects which limit visibility.
Therefore, extracting quantitative spray information such as droplet size and concentration from qualitative images becomes very challenging. However, multiple scattering effects can be efficiently addressed by means of the SLIPI (Structured Laser Illumination Planar Imaging) technique. Recently, using SLIPI in combination with LIF/Mie droplet sizing (ratio of the liquid Laser Induced Fluorescence (LIF) and Mie scattering signals), a mapping of absolute Sauter Mean Diameter (SMD or D32) could be extracted. It was observed that without SLIPI, reliable measurements of SMD could... (More)
While imaging optically dense media such as atomizing sprays, the multiple light scattering induces image artifacts and blurring effects which limit visibility.
Therefore, extracting quantitative spray information such as droplet size and concentration from qualitative images becomes very challenging. However, multiple scattering effects can be efficiently addressed by means of the SLIPI (Structured Laser Illumination Planar Imaging) technique. Recently, using SLIPI in combination with LIF/Mie droplet sizing (ratio of the liquid Laser Induced Fluorescence (LIF) and Mie scattering signals), a mapping of absolute Sauter Mean Diameter (SMD or D32) could be extracted. It was observed that without SLIPI, reliable measurements of SMD could not be achieved. In another work, a 3D map of the droplet extinction-coefficient (µe) in an aerated spray was extracted using the SLIPI-scan technique. In this article, SLIPI-LIF/Mie droplet sizing is performed in combination with SLIPI-scan in order to construct a 3D representation of droplet SMD in the developed spray region and the corresponding optical depth in 2D. (Less)
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author
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organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
host publication
18th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics
article number
04.7_3_172
pages
12 pages
publisher
Lisbon Symposium
language
English
LU publication?
yes
id
1a28cdc4-3d60-4f5d-beb9-2cf3f38c28bb
date added to LUP
2016-07-18 12:47:56
date last changed
2020-10-20 10:18:31
@inproceedings{1a28cdc4-3d60-4f5d-beb9-2cf3f38c28bb,
  abstract     = {{While imaging optically dense media such as atomizing sprays, the multiple light scattering induces image artifacts and blurring effects which limit visibility.<br/>Therefore, extracting quantitative spray information such as droplet size and concentration from qualitative images becomes very challenging. However, multiple scattering effects can be efficiently addressed by means of the SLIPI (Structured Laser Illumination Planar Imaging) technique. Recently, using SLIPI in combination with LIF/Mie droplet sizing (ratio of the liquid Laser Induced Fluorescence (LIF) and Mie scattering signals), a mapping of absolute Sauter Mean Diameter (SMD or D32) could be extracted. It was observed that without SLIPI, reliable measurements of SMD could not be achieved. In another work, a 3D map of the droplet extinction-coefficient (µe) in an aerated spray was extracted using the SLIPI-scan technique. In this article, SLIPI-LIF/Mie droplet sizing is performed in combination with SLIPI-scan in order to construct a 3D representation of droplet SMD in the developed spray region and the corresponding optical depth in 2D.}},
  author       = {{Mishra, Yogeshwar Nath and Kristensson, Elias and Berrocal, Edouard}},
  booktitle    = {{18th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics}},
  language     = {{eng}},
  month        = {{07}},
  pages        = {{01--01}},
  publisher    = {{Lisbon Symposium}},
  title        = {{3D droplet sizing and 2D optical depth measurements in sprays using SLIPI based techniques}},
  url          = {{https://lup.lub.lu.se/search/files/85590072/04.7_3_172paper.pdf}},
  year         = {{2016}},
}