Experimental investigation of pressure-swirl atomizers with a modification in a geometry of spill-return orifice

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F15%3APU115595" target="_blank" >RIV/00216305:26210/15:PU115595 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Experimental investigation of pressure-swirl atomizers with a modification in a geometry of spill-return orifice

Popis výsledku v původním jazyce

This study investigates characteristics of spray generated by a pressure swirl atomizer (spill-return type) which is designed for a small-sized jet engine using shadowgraphy and Phase-Doppler Anemometry (PDA). The purpose of this study is to find out aninfluence of a spill-return orifice geometry on (an) atomization quality. Two different geometries of the spill-return orifice were tested in terms of spray stability on a cold test bench. The former atomizer uses the direct axial spill-return orifice located in a centre of a swirl chamber, whileere the modified atomizer contains an obstacle blocking axial flow through the spill-return orifice. PDA measurement yields drop-size distribution and velocity data, whileere the shadowgraphy unveils a break-upprocess in detail. Performed measurements reveals significant differences in spray characteristics as well as differences in spraybreak-up stability. Results of this study showleadsato necessity of more detailed investigation (in the area

Název v anglickém jazyce

Experimental investigation of pressure-swirl atomizers with a modification in a geometry of spill-return orifice

Popis výsledku anglicky

This study investigates characteristics of spray generated by a pressure swirl atomizer (spill-return type) which is designed for a small-sized jet engine using shadowgraphy and Phase-Doppler Anemometry (PDA). The purpose of this study is to find out aninfluence of a spill-return orifice geometry on (an) atomization quality. Two different geometries of the spill-return orifice were tested in terms of spray stability on a cold test bench. The former atomizer uses the direct axial spill-return orifice located in a centre of a swirl chamber, whileere the modified atomizer contains an obstacle blocking axial flow through the spill-return orifice. PDA measurement yields drop-size distribution and velocity data, whileere the shadowgraphy unveils a break-upprocess in detail. Performed measurements reveals significant differences in spray characteristics as well as differences in spraybreak-up stability. Results of this study showleadsato necessity of more detailed investigation (in the area

Druh

D - Stať ve sborníku

CEP obor

BK - Mechanika tekutin

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

34th Conference of Departments of Fluids Mechanics and Thermomechanics Proceedings of Extended Abstracts

ISBN

978-80-7414-912-2

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

1-2

Název nakladatele

Neuveden

Místo vydání

Litoměřice

Místo konání akce

Litoměřice

Datum konání akce

22. 6. 2015

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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