Publication result 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

WoS Article

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

Key words in English

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

Authors

JEDELSKÝ, J.; JÍCHA, M.

RIV year

2011

Released

01.01.2008

Publisher

Begell House

Location

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

ISBN

1044-5110

Periodical

ATOMIZATION AND SPRAYS

Volume

18

Number

1

State

United States of America

Pages from

49

Pages to

83

Pages count

35

URL

http://www.dl.begellhouse.com/journals/6a7c7e10642258cc,7da5e43f06d335eb,4319cefd3bbc5dc2.html

Full text in the Digital Library

http://hdl.handle.net/11012/138401

BibTex

@article{BUT44240,
  author="Jan {Jedelský} and Miroslav {Jícha}",
  title="Unsteadiness in Effervescent Sprays: a New Evaluation Method and the Influence of Operational Conditions",
  journal="ATOMIZATION AND SPRAYS",
  year="2008",
  volume="18",
  number="1",
  pages="49--83",
  doi="10.1615/AtomizSpr.v18.i1.20",
  issn="1044-5110",
  url="http://www.dl.begellhouse.com/journals/6a7c7e10642258cc,7da5e43f06d335eb,4319cefd3bbc5dc2.html"
}

Documents

Jedelsky&Jicha-2008-accepted_manuscript
unsteadiness-in-effervescent-sprays_vut