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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F15%3APU115597" target="_blank" >RIV/00216305:26210/15:PU115597 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
SOME ASPECTS OF DISINTEGRATION OF ANNULAR LIQUID SHEET IN PRESSURE-SWIRL ATOMIZATION
Original language description
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 flowinstability 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
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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