Comparative analysis of drop-size measurement in highly dense sprays using shadowgraphy, PDA, and SLIPI

Vivekanand V. Swami, Kay A. Buist, Maike W. Baltussen, Jewe Schröder, Marcel Arbon, Koen van Dijk, J.A.M. Kuipers

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Abstract

Atomization is a physical phenomenon that is widely encountered in many engineering and industrial applications, such as in combustion engines, spray coating, spray dryers and many more. Spray characterization involves the determination of the droplet size and velocity distributions (both probability density function and spatial). To determine these parameters experimentally, traditionally, microscopic shadowgraphy and Phase Doppler Anemometry (PDA) are used, because of their relative ease of use and high accuracy. However, the application of these techniques is limited to relatively less dense sprays. In highly dense sprays, the strong multiple scattering effects cause significant errors in the determination of relevant parameters. Therefore, the Structured Laser Illumination Planar Imaging (SLIPI) technique is adopted. In this work, comparative measurements are reported to assess the capabilities of these techniques for drop-size measurements in a highly dense spray originating from a pressure swirl nozzle.
Original languageEnglish
Title of host publicationILASS Europe 2023 Meeting
Subtitle of host publicationEuropean Meeting on Liquid Atomization and Spray Systems
Place of PublicationNapoli, Italy
PublisherILASS Europe
Number of pages9
ISBN (Electronic)978-88-88104-28-7
Publication statusPublished - Sept 2023

Funding

This work is part the “EEMS - Energy Efficient Milky Sprays” project which took place within the framework of the Institute of Sustainable Process Technology (ISPT) and was co-financed by the TKI-Energy & Industry, Danone Nutricia Research, dsm-firmenich and FrieslandCampina. More information can be found at the EEMS website. Special thanks to Danone Nutricia Research for the use of the shadowgraphy setup. Authors also would like to acknowledge the financial support from The Netherlands Center for Multiscale Catalytic Energy Conversion (MCEC) for the SLIPI setup. The information about the MCEC can be found on the MCEC website.

Keywords

  • Dense sprays
  • Drop-size measurement
  • Shadowgraphy
  • Phase Doppler Anemometry (PDA)
  • Structured Laser Illumination Planar Imaging (SLIPI)

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