Publication detail

Internal flow characteristics in scaled pressure-swirl atomizer

MALÝ, M. SAPÍK, M. JEDELSKÝ, J. JANÁČKOVÁ, L. JÍCHA, M. SLÁMA, J. WIGLEY, G.

Original Title

Internal flow characteristics in scaled pressure-swirl atomizer

Type

journal article in Web of Science

Language

English

Original Abstract

Pressure-swirl atomizers are used in a wide range of industrial applications, e.g.: combustion, cooling, painting, food processing etc. Their spray characteristics are closely linked to the internal flow which predetermines the parameters of the liquid sheet formed at the discharge orifice. To achieve a better understanding of the spray formation process, the internal flow was characterised using Laser Doppler Anemometry (LDA) and high-speed imaging in a transparent model made of cast PMMA (Poly(methyl methacrylate)). The design of the transparent atomizer was derived from a pressure-swirl atomizer as used in a small gas turbine. Due to the small dimensions, it was manufactured in a scale of 10:1. It has modular concept and consists of three parts which were ground, polished and bolted together. The original kerosene-type jet A-1 fuel had to be replaced due to the necessity of a refractive index match. The new working liquid should also be colourless, non-aggressive to the PMMA and have the appropriate viscosity to achieve the same Reynolds number as in the original atomizer. Several liquids were chosen and tested to satisfy these requirements. P-Cymene was chosen as the suitable working liquid. The internal flow characteristics were consequently examined by LDA and high-speed camera using p-Cymene and Kerosene-type jet A-1 in comparative manner.

Keywords

Pressure-swirl, internal flow, Laser Doppler Anemometry, High-speed camera

Authors

MALÝ, M.; SAPÍK, M.; JEDELSKÝ, J.; JANÁČKOVÁ, L.; JÍCHA, M.; SLÁMA, J.; WIGLEY, G.

Released

4. 6. 2018

Publisher

Technical University Liberec

Location

Liberec

ISBN

2100-014X

Periodical

EPJ Web of Conferences

Year of study

180

Number

02059

State

French Republic

Pages from

1

Pages to

6

Pages count

6

URL

https://doi.org/10.1051/epjconf/201818002059

Full text in the Digital Library

http://hdl.handle.net/11012/196408

BibTex

@article{BUT143870,
  author="Milan {Malý} and Marcel {Sapík} and Jan {Jedelský} and Lada {Janáčková} and Miroslav {Jícha} and Jaroslav {Sláma} and Graham {Wigley}",
  title="Internal flow characteristics in scaled pressure-swirl atomizer",
  journal="EPJ Web of Conferences",
  year="2018",
  volume="180",
  number="02059",
  pages="1--6",
  doi="10.1051/epjconf/201818002059",
  issn="2100-014X",
  url="https://doi.org/10.1051/epjconf/201818002059"
}