Publication detail

Detailed spray analysis of airblast atomization of various fuels in a reacting environment

KARDOS, R. RÁCZ, E. MALÝ, M. JEDELSKÝ, J. JÓZSA, V.

Original Title

Detailed spray analysis of airblast atomization of various fuels in a reacting environment

Type

journal article in Web of Science

Language

English

Original Abstract

Understanding spray evolution in a reacting environment is critical to designing advanced, clean combustion systems. The processes in the upstream region determine flame shape, stability, ignition characteristics, pollutant emission, and combustion efficiency. The developed spray is never achieved in combustion since the early regions feature primary and secondary atomization, while droplets evaporate as they approach the flame. Consequently, there is no thermodynamic equilibrium before the flame front. The principal goal of this paper is to provide detailed information to model developers on various sprays measured by a Phase Doppler Anemometer; the processed measurement data is available as supplementary material, while the raw data will be provided upon request. Four different fuels were tested: diesel fuel, aviation kerosene type JP-8, biodiesel, and a 50 % biodiesel-diesel blend by volume. The plain -jet airblast atomizer was tested at four atomization gauge pressures (0.3, 0.45, 0.6, 0.75 barg). Therefore, sixteen different sprays were measured along one spray diameter at each of four downstream distances of 15, 25, 35, and 45 mm, measured from the nozzle tip. The paper details the droplet size distribution, droplet axial velocity, fluctuations, and correlation between size and velocity to facilitate a comprehensive understanding of liquid fuel sprays. This latter measure helps identify the overshooting phenomenon, i.e., localizing the regions where the large droplets move faster than the gas phase.

Keywords

Spray; Airblast atomizer; Phase Doppler Anemometry; Reacting; Biofuel; Evaporation

Authors

KARDOS, R.; RÁCZ, E.; MALÝ, M.; JEDELSKÝ, J.; JÓZSA, V.

Released

1. 8. 2024

Publisher

PERGAMON-ELSEVIER SCIENCE LTD

Location

OXFORD

ISBN

1879-2189

Periodical

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER

Year of study

227

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

12

Pages count

12

URL

https://www.sciencedirect.com/science/article/pii/S001793102400379X

BibTex

@article{BUT188454,
  author="Réka Anna {Kardos} and Erika {Rácz} and Milan {Malý} and Jan {Jedelský} and Viktor {Józsa}",
  title="Detailed spray analysis of airblast atomization of various fuels in a reacting environment",
  journal="INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER",
  year="2024",
  volume="227",
  number="1",
  pages="1--12",
  doi="10.1016/j.ijheatmasstransfer.2024.125548",
  issn="1879-2189",
  url="https://www.sciencedirect.com/science/article/pii/S001793102400379X"
}