Publication detail

Combined Drop Sizing using Phase Doppler Anemometry and High-Speed Imaging

CEJPEK, O. MALÝ, M. JEDELSKÝ, J.

Original Title

Combined Drop Sizing using Phase Doppler Anemometry and High-Speed Imaging

Type

conference paper

Language

English

Original Abstract

The majority of conventional atomizers generate sprays with a polydisperse droplet size distribution. The spray size distribution width is one of the main spray characteristics and influences the efficiency of mass-transfer related applications such as CO2 capture efficiency in spray columns. A newly developed impinging effervescent atomizer is investigated at different operating regimes. The inlet pressure of 0.1 MPa and three gas to liquid ratio (GLRs) regimes of 2.5, 5 and 10% were tested. The spray droplet size distribution was investigated using two experimental techniques, Phase Doppler anemometry (PDA) and high-speed (HS) imaging. The droplet size distributions obtained by both experimental techniques are compared, both with slightly different results and features. Therefore, an approach with combining of the experimental data from both techniques is provided. More realistic droplet size distributions are obtained then, since PDA detects small droplets, while the HS imaging accurately captures large and non-spherical droplets. It was found that the spray polydispersity grows with increasing GLR. The spray contains most of its volume in large droplets for GLR = 2.5%. With increasing GLR, the smaller droplets contain a larger volume fraction, but a small number of large droplets remains and thus increases the spray polydispersity.

Keywords

Phase Doppler anemometry, High-speed imaging, effervescent atomizer, droplet diameter, relative span factor

Authors

CEJPEK, O.; MALÝ, M.; JEDELSKÝ, J.

Released

14. 2. 2023

Publisher

American Institute of Physics Inc.

Location

Melville, New York

ISBN

0094-243X

Periodical

AIP conference proceedings

Year of study

2672

Number

1

State

United States of America

Pages from

1

Pages to

6

Pages count

6

URL

https://www.scopus.com/record/display.uri?eid=2-s2.0-85149804261&origin=resultslist&sort=plf-f&src=s&sid=c9b7a9a4433414432c3bcaa586fd7bb5&sot=b&sdt=b&s=DOI%2810.1063%2F5.0120006%29&sl=22&sessionSearchId=c9b7a9a4433414432c3bcaa586fd7bb5&relpos=0

BibTex

@inproceedings{BUT172996,
  author="Ondřej {Cejpek} and Milan {Malý} and Jan {Jedelský}",
  title="Combined Drop Sizing using Phase Doppler Anemometry and High-Speed Imaging",
  booktitle="AIP Conference Proceedings",
  year="2023",
  journal="AIP conference proceedings",
  volume="2672",
  number="1",
  pages="1--6",
  publisher="American Institute of Physics Inc.",
  address="Melville, New York",
  doi="10.1063/5.0120006",
  issn="0094-243X",
  url="https://www.scopus.com/record/display.uri?eid=2-s2.0-85149804261&origin=resultslist&sort=plf-f&src=s&sid=c9b7a9a4433414432c3bcaa586fd7bb5&sot=b&sdt=b&s=DOI%2810.1063%2F5.0120006%29&sl=22&sessionSearchId=c9b7a9a4433414432c3bcaa586fd7bb5&relpos=0"
}