Publication result detail

INTERACTION OF THE AIR WITH LIQUID IN PRESSURE-SWIRL SPRAYS

JEDELSKÝ, J.; MALÝ, M.; JÍCHA, M.; DEL CORRAL, N.

Original Title

INTERACTION OF THE AIR WITH LIQUID IN PRESSURE-SWIRL SPRAYS

English Title

INTERACTION OF THE AIR WITH LIQUID IN PRESSURE-SWIRL SPRAYS

Type

Abstract

Original Abstract

The flow field in a spray produced by a pressure-swirl (PS) atomizer was studied using Phase-Doppler Anemometry (PDA). A Stokes number (Stk) analysis of the sprayed droplets showed that droplets < 5 µm followed the airflow so were used to provide estimates of the local air velocity. The Stk increases with drop size; even 20–40 µm sized droplets (Stk ~ 1) are partially affected by the air flow while the largest ones (80–160 µm, Stk > 10) move ballistically. The liquid and gas flow fields were compared in terms of the mean and rms velocities. The airflow, inside the hollow-cone spray, was found to be highly anisotropic and spatially varying within three distinct regions. Spatially resolved TKE and MKE of the air and spectra of the droplet velocity fluctuations are detailed in the paper.

English abstract

The flow field in a spray produced by a pressure-swirl (PS) atomizer was studied using Phase-Doppler Anemometry (PDA). A Stokes number (Stk) analysis of the sprayed droplets showed that droplets < 5 µm followed the airflow so were used to provide estimates of the local air velocity. The Stk increases with drop size; even 20–40 µm sized droplets (Stk ~ 1) are partially affected by the air flow while the largest ones (80–160 µm, Stk > 10) move ballistically. The liquid and gas flow fields were compared in terms of the mean and rms velocities. The airflow, inside the hollow-cone spray, was found to be highly anisotropic and spatially varying within three distinct regions. Spatially resolved TKE and MKE of the air and spectra of the droplet velocity fluctuations are detailed in the paper.

Keywords

Stokes number, pressure-swirl (PS) atomizer, droplets

Key words in English

Stokes number, pressure-swirl (PS) atomizer, droplets

Authors

JEDELSKÝ, J.; MALÝ, M.; JÍCHA, M.; DEL CORRAL, N.

RIV year

2016

Released

30.07.2015

Publisher

The University of Melbourne

Location

Melbourne, Australia

Edition

1.

Pages from

1

Pages to

6

Pages count

6

BibTex

@misc{BUT117088,
  author="Jan {Jedelský} and Milan {Malý} and Miroslav {Jícha} and Noé Pinto {Del Corral}",
  title="INTERACTION OF THE AIR WITH LIQUID IN PRESSURE-SWIRL SPRAYS",
  year="2015",
  series="1.",
  edition="1",
  pages="1--6",
  publisher="The University of Melbourne",
  address="Melbourne, Australia",
  note="Abstract"
}