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Spatiotemporal distribution of liquid mass in transient sprays using X-ray tomography from a laser-driven plasma accelerator

Löfquist, E. LU ; Lehnert, B. ; Gustafsson, C. LU orcid ; Angella, A. LU ; Persson, A. LU ; Berrocal, E. LU and Lundh, O. LU orcid (2025) In Physics of Fluids 37(9).
Abstract

We present time-resolved three-dimensional measurements of the averaged liquid mass distribution generated by the Spray M from the Engine Combustion Network. The operating condition corresponds to a non-reacting early injection case for spray-guided gasoline injection during the first 200 μs. Few-femtosecond X-rays from a compact laser wakefield accelerator, enable quantitative spray measurements, from the nozzle tip to the spray front. Spray cone angles, plume directionality, and mass redistribution are quantified with spatial resolution of the order of 15 μm. Results show that the eight plumes exhibit a similar spatial distribution of liquid volume fraction. In addition, the distribution of liquid volume fraction changes over time,... (More)

We present time-resolved three-dimensional measurements of the averaged liquid mass distribution generated by the Spray M from the Engine Combustion Network. The operating condition corresponds to a non-reacting early injection case for spray-guided gasoline injection during the first 200 μs. Few-femtosecond X-rays from a compact laser wakefield accelerator, enable quantitative spray measurements, from the nozzle tip to the spray front. Spray cone angles, plume directionality, and mass redistribution are quantified with spatial resolution of the order of 15 μm. Results show that the eight plumes exhibit a similar spatial distribution of liquid volume fraction. In addition, the distribution of liquid volume fraction changes over time, with maxima starting from the external periphery and moving toward the internal periphery of the plumes. This experiment demonstrates the possibility of studying the time-resolved three-dimensional liquid mass distribution of challenging multi-hole transient sprays running at high injection pressures. This opens new opportunities for validating spray simulations and advancing fuel injection technologies in next-generation combustion systems.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physics of Fluids
volume
37
issue
9
article number
093343
publisher
American Institute of Physics (AIP)
external identifiers
  • scopus:105015453935
ISSN
1070-6631
DOI
10.1063/5.0280407
language
English
LU publication?
yes
id
1b2007c8-6c9e-4a43-9fec-3dc9c8e60609
date added to LUP
2025-10-15 15:53:28
date last changed
2025-10-15 15:54:33
@article{1b2007c8-6c9e-4a43-9fec-3dc9c8e60609,
  abstract     = {{<p>We present time-resolved three-dimensional measurements of the averaged liquid mass distribution generated by the Spray M from the Engine Combustion Network. The operating condition corresponds to a non-reacting early injection case for spray-guided gasoline injection during the first 200 μs. Few-femtosecond X-rays from a compact laser wakefield accelerator, enable quantitative spray measurements, from the nozzle tip to the spray front. Spray cone angles, plume directionality, and mass redistribution are quantified with spatial resolution of the order of 15 μm. Results show that the eight plumes exhibit a similar spatial distribution of liquid volume fraction. In addition, the distribution of liquid volume fraction changes over time, with maxima starting from the external periphery and moving toward the internal periphery of the plumes. This experiment demonstrates the possibility of studying the time-resolved three-dimensional liquid mass distribution of challenging multi-hole transient sprays running at high injection pressures. This opens new opportunities for validating spray simulations and advancing fuel injection technologies in next-generation combustion systems.</p>}},
  author       = {{Löfquist, E. and Lehnert, B. and Gustafsson, C. and Angella, A. and Persson, A. and Berrocal, E. and Lundh, O.}},
  issn         = {{1070-6631}},
  language     = {{eng}},
  number       = {{9}},
  publisher    = {{American Institute of Physics (AIP)}},
  series       = {{Physics of Fluids}},
  title        = {{Spatiotemporal distribution of liquid mass in transient sprays using X-ray tomography from a laser-driven plasma accelerator}},
  url          = {{http://dx.doi.org/10.1063/5.0280407}},
  doi          = {{10.1063/5.0280407}},
  volume       = {{37}},
  year         = {{2025}},
}