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Analysis of liquid surface deformation and breakups using three-dimensional high-speed data recorded with a single camera

Roth, Adrian LU ; Sapik, Marcel ; Kristensson, Elias LU ; Jedelsky, Jan and Berrocal, Edouard LU (2022) In Physics of Fluids 34(12).
Abstract

Analyzing the deformation of liquid surfaces to better understand, for example, wave generation in oceanology or the formation of industrial spray systems, requires a series of three-dimensional snapshots that temporally resolve such events. This requirement is challenging, especially when applied to transient liquid surfaces that deform rapidly. A technique called Fringe Projection-Laser Induced Fluorescence (FP-LIF), developed by the authors, generates three-dimensional surface reconstructions of irregular liquid structures using snapshots recorded via a single camera only. In this article, FP-LIF is associated, for the first time, with a high-speed detection system, allowing the three-dimensional visualization of liquid surface... (More)

Analyzing the deformation of liquid surfaces to better understand, for example, wave generation in oceanology or the formation of industrial spray systems, requires a series of three-dimensional snapshots that temporally resolve such events. This requirement is challenging, especially when applied to transient liquid surfaces that deform rapidly. A technique called Fringe Projection-Laser Induced Fluorescence (FP-LIF), developed by the authors, generates three-dimensional surface reconstructions of irregular liquid structures using snapshots recorded via a single camera only. In this article, FP-LIF is associated, for the first time, with a high-speed detection system, allowing the three-dimensional visualization of liquid surface deformation and breakups at a kHz frame rate. The technique is applied here at 20 kHz for imaging the complete development of a wide hollow-cone water spray and analyzing, in detail, the transition from early injection to stabilization. The three-dimensional image series covered a total time window of 300 ms (6000 frames). It is observed during the first 100 ms that the initial liquid jet deforms into a stable tulip shaped sheet. Then, between 100 and 180 ms, the tulip shape gradually grows until its stabilization corresponds to the final conical shaped sheet. Once the stabilization is reached, the fluctuation of the final spray-angle - ranging from 40° to 50° - is extracted by post-processing 1000 consecutive three-dimensional images, providing a detailed analysis of the radial symmetry of the spray over time and three-dimensional space. The results provided in this article are relevant for the validation of Computational Fluid Dynamics spray models.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physics of Fluids
volume
34
issue
12
article number
123324
publisher
American Institute of Physics (AIP)
external identifiers
  • scopus:85144632182
ISSN
1070-6631
DOI
10.1063/5.0130498
project
High-speed 3D imaging of liquid jets, surfaces and respiratory droplets
language
English
LU publication?
yes
id
6470e440-f8ff-41bc-b4d3-761f0adb3933
date added to LUP
2023-01-05 12:39:47
date last changed
2023-11-07 01:44:18
@article{6470e440-f8ff-41bc-b4d3-761f0adb3933,
  abstract     = {{<p>Analyzing the deformation of liquid surfaces to better understand, for example, wave generation in oceanology or the formation of industrial spray systems, requires a series of three-dimensional snapshots that temporally resolve such events. This requirement is challenging, especially when applied to transient liquid surfaces that deform rapidly. A technique called Fringe Projection-Laser Induced Fluorescence (FP-LIF), developed by the authors, generates three-dimensional surface reconstructions of irregular liquid structures using snapshots recorded via a single camera only. In this article, FP-LIF is associated, for the first time, with a high-speed detection system, allowing the three-dimensional visualization of liquid surface deformation and breakups at a kHz frame rate. The technique is applied here at 20 kHz for imaging the complete development of a wide hollow-cone water spray and analyzing, in detail, the transition from early injection to stabilization. The three-dimensional image series covered a total time window of 300 ms (6000 frames). It is observed during the first 100 ms that the initial liquid jet deforms into a stable tulip shaped sheet. Then, between 100 and 180 ms, the tulip shape gradually grows until its stabilization corresponds to the final conical shaped sheet. Once the stabilization is reached, the fluctuation of the final spray-angle - ranging from 40° to 50° - is extracted by post-processing 1000 consecutive three-dimensional images, providing a detailed analysis of the radial symmetry of the spray over time and three-dimensional space. The results provided in this article are relevant for the validation of Computational Fluid Dynamics spray models.</p>}},
  author       = {{Roth, Adrian and Sapik, Marcel and Kristensson, Elias and Jedelsky, Jan and Berrocal, Edouard}},
  issn         = {{1070-6631}},
  language     = {{eng}},
  number       = {{12}},
  publisher    = {{American Institute of Physics (AIP)}},
  series       = {{Physics of Fluids}},
  title        = {{Analysis of liquid surface deformation and breakups using three-dimensional high-speed data recorded with a single camera}},
  url          = {{http://dx.doi.org/10.1063/5.0130498}},
  doi          = {{10.1063/5.0130498}},
  volume       = {{34}},
  year         = {{2022}},
}