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Planar droplets sizing of a hollow-cone spray using SLIPI-LIF/Mie

Mishra, Yogeshwar LU ; Kristensson, Elias LU ; Pettersson, Sven-Göran LU and Berrocal, Edouard LU (2013) 25th European Conference on Liquid Atomization and Spray Systems
Abstract
In this work, we report an original experimental approach for measuring the two-dimensional distribution of the droplets Sauter Mean Diameter (SMD) using the SLIPI-LIF/Mie technique. A hollow-cone spray is formed by continuously injecting water mixed with a non-toxic fluorescing dye at 20 bars injection pressure. The spray is illuminated using a continuous wave laser. The illumination wavelength (here, 447 nm) is carefully chosen to excite the injected dye/water mixture, which generates a significant Laser Induced Fluorescence (LIF) signal peaking at 514 nm. The LIF and Mie signals are simultaneously recorded using two CCD cameras and their intensity ratio is used to extract a two-dimensional distribution of the droplets SMD. In this... (More)
In this work, we report an original experimental approach for measuring the two-dimensional distribution of the droplets Sauter Mean Diameter (SMD) using the SLIPI-LIF/Mie technique. A hollow-cone spray is formed by continuously injecting water mixed with a non-toxic fluorescing dye at 20 bars injection pressure. The spray is illuminated using a continuous wave laser. The illumination wavelength (here, 447 nm) is carefully chosen to excite the injected dye/water mixture, which generates a significant Laser Induced Fluorescence (LIF) signal peaking at 514 nm. The LIF and Mie signals are simultaneously recorded using two CCD cameras and their intensity ratio is used to extract a two-dimensional distribution of the droplets SMD. In this article, we show that even for the case of a dilute hollow-cone spray, where single scattering events are in majority, the LIF/Mie measurement of droplets SMD still remains strongly affected by multiple light scattering. We demonstrate, then, that the use of SLIPI is unavoidable to obtain trustable SMD measurements based on the LIF/Mie ratio, even for optically dilute sprays. (Less)
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author
organization
publishing date
type
Contribution to conference
publication status
unpublished
subject
categories
Higher Education
pages
7 pages
conference name
25th European Conference on Liquid Atomization and Spray Systems
language
English
LU publication?
yes
id
c124aca6-c6d7-446c-9ab8-3f1a0f6e3952 (old id 5471267)
date added to LUP
2015-06-10 21:41:05
date last changed
2016-04-16 11:35:49
@misc{c124aca6-c6d7-446c-9ab8-3f1a0f6e3952,
  abstract     = {In this work, we report an original experimental approach for measuring the two-dimensional distribution of the droplets Sauter Mean Diameter (SMD) using the SLIPI-LIF/Mie technique. A hollow-cone spray is formed by continuously injecting water mixed with a non-toxic fluorescing dye at 20 bars injection pressure. The spray is illuminated using a continuous wave laser. The illumination wavelength (here, 447 nm) is carefully chosen to excite the injected dye/water mixture, which generates a significant Laser Induced Fluorescence (LIF) signal peaking at 514 nm. The LIF and Mie signals are simultaneously recorded using two CCD cameras and their intensity ratio is used to extract a two-dimensional distribution of the droplets SMD. In this article, we show that even for the case of a dilute hollow-cone spray, where single scattering events are in majority, the LIF/Mie measurement of droplets SMD still remains strongly affected by multiple light scattering. We demonstrate, then, that the use of SLIPI is unavoidable to obtain trustable SMD measurements based on the LIF/Mie ratio, even for optically dilute sprays.},
  author       = {Mishra, Yogeshwar and Kristensson, Elias and Pettersson, Sven-Göran and Berrocal, Edouard},
  language     = {eng},
  pages        = {7},
  title        = {Planar droplets sizing of a hollow-cone spray using SLIPI-LIF/Mie},
  year         = {2013},
}