Publication detail

Unsteadiness in Effervescent Sprays: a New Evaluation Method and the Influence of Operational Conditions

JEDELSKÝ, J. JÍCHA, M.

Original Title

Unsteadiness in Effervescent Sprays: a New Evaluation Method and the Influence of Operational Conditions

English Title

Unsteadiness in Effervescent Sprays: a New Evaluation Method and the Influence of Operational Conditions

Type

journal article in Web of Science

Language

en

Original Abstract

A new evaluation method of unsteadiness of the spray generated by an effervescent atomizer is presented. The method is based on measurements of pressure fluctuations in the atomizer mixing chamber. Measurements, made under different atomizer operational conditions, show that the spray unsteadiness depends mainly on gas-to-liquid ratio (GLR). Decrease in GLR causes the spray to become more unsteady. The relation between atomizer internal two-phase flow pattern and the spray unsteadiness is elucidated by visualization of the internal two-phase flow using a digital camera and the use of published two-phase flow maps. Findings of the new method are complemented and confronted with the results obtained by the use of the spray unsteadiness evaluation method of Edwards and Marx.

English abstract

A new evaluation method of unsteadiness of the spray generated by an effervescent atomizer is presented. The method is based on measurements of pressure fluctuations in the atomizer mixing chamber. Measurements, made under different atomizer operational conditions, show that the spray unsteadiness depends mainly on gas-to-liquid ratio (GLR). Decrease in GLR causes the spray to become more unsteady. The relation between atomizer internal two-phase flow pattern and the spray unsteadiness is elucidated by visualization of the internal two-phase flow using a digital camera and the use of published two-phase flow maps. Findings of the new method are complemented and confronted with the results obtained by the use of the spray unsteadiness evaluation method of Edwards and Marx.

Keywords

Spray unsteadiness, effervescent atomizer, measurement method, two-phase flow

RIV year

2008

Released

01.01.2008

Publisher

Begell House

Location

Begell House Inc. 50 Cross Highway, Redding, CT 06896

Pages from

49

Pages to

83

Pages count

35

URL

Full text in the Digital Library

BibTex


@article{BUT44240,
  author="Jan {Jedelský} and Miroslav {Jícha}",
  title="Unsteadiness in Effervescent Sprays: a New Evaluation Method and the Influence of Operational Conditions",
  annote="A new evaluation method of unsteadiness of the spray generated by an effervescent atomizer is presented. The method is based on measurements of pressure fluctuations in the atomizer mixing chamber. Measurements, made under different atomizer operational conditions, show that the spray unsteadiness depends mainly on gas-to-liquid ratio (GLR). Decrease in GLR causes the spray to become more unsteady. The relation between atomizer internal two-phase flow pattern and the spray unsteadiness is elucidated by visualization of the internal two-phase flow using a digital camera and the use of published two-phase flow maps. Findings of the new method are complemented and confronted with the results obtained by the use of the spray unsteadiness evaluation method of Edwards and Marx.",
  address="Begell House",
  chapter="44240",
  doi="10.1615/AtomizSpr.v18.i1.20",
  institution="Begell House",
  journal="Atomization and sprays",
  number="1",
  volume="18",
  year="2008",
  month="january",
  pages="49--83",
  publisher="Begell House",
  type="journal article in Web of Science"
}