Detail publikace

SOME ASPECTS OF DISINTEGRATION OF ANNULAR LIQUID SHEET IN PRESSURE-SWIRL ATOMIZATION

JEDELSKÝ, J. MALÝ, M. HOLUB, M. JÍCHA, M.

Anglický název

SOME ASPECTS OF DISINTEGRATION OF ANNULAR LIQUID SHEET IN PRESSURE-SWIRL ATOMIZATION

Typ

Stať ve sborníku v databázi WoS či Scopus

Jazyk

en

Originální abstrakt

In pressure-swirl (PS) atomization, the internal flow structure and the formation of a liquid film are closely linked to the quality of the resulting spray. The flow, as a subject to several disturbing sources, contain unsteadiness that can harm the atomization.In this paper, imaging is used to study discharge, near nozzle flow and primary breakup for small PS atomizer. The atomizer performance is characterised in terms of discharge coefficient, liquid sheet thickness, breakup distance, and nozzle efficiency. The breakup length according to near nozzle visualization and sheet breakup analysis wasfound much smaller than the length predicted using the inviscid model and both external and internal sources were identified as possible reasons. External flow instability sources were found by means of pressure fluctuation sensing upstream the nozzle. Phase-Doppler anemometry was used to document the mean structure of the developed spray and to characterise spray fluctuations. The findings are used to propose possible changes in the atomizer design for improvement of its performance.

Klíčová slova anglicky

unsteadiness, liquid sheet, pressure-swirl atomizer, primary breakup

Vydáno

2015-09-01

Místo

Budapest

ISBN

978-963-313-190-9

Kniha

Conference on Modelling Fluid Flow

Strany od–do

1–8

Počet stran

8

BIBTEX


@inproceedings{BUT117106,
  author="Jan {Jedelský} and Milan {Malý} and Martin {Holub} and Miroslav {Jícha}",
  title="SOME ASPECTS OF DISINTEGRATION OF ANNULAR LIQUID SHEET IN PRESSURE-SWIRL ATOMIZATION",
  booktitle="Conference on Modelling Fluid Flow",
  year="2015",
  pages="1--8",
  address="Budapest",
  isbn="978-963-313-190-9"
}