Detail publikace

Experimentání test tlakové vířivé trysky s modifikací v geometrii obtokového otvoru

MALÝ, M. JANÁČKOVÁ, L. JEDELSKÝ, J. JÍCHA, M.

Originální název

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

Český název

Experimentání test tlakové vířivé trysky s modifikací v geometrii obtokového otvoru

Anglický název

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

Typ

článek ve sborníku

Jazyk

en

Originální abstrakt

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 an influence 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-up process 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) of influences of spill-return orifice geometry on an atomization process.

Český abstrakt

Tato práce se zabývá experimentáním studiem tlakové vířivé trysky s modifikací v geometrii obtokového otvoru za pooužití fázového dopplerovského analyzátoru.

Anglický abstrakt

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 an influence 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-up process 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) of influences of spill-return orifice geometry on an atomization process.

Klíčová slova

Tlaková vířivá trysky, nestability, Phase Doppler Anemometry, shadowgraphy,

Rok RIV

2015

Vydáno

23.06.2015

Místo

Litoměřice

ISBN

978-80-7414-912-2

Kniha

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

Edice

1

Strany od

1

Strany do

2

Strany počet

2

BibTex


@inproceedings{BUT117073,
  author="Milan {Malý} and Lada {Janáčková} and Jan {Jedelský} and Miroslav {Jícha}",
  title="Experimental investigation of pressure-swirl atomizers with a modification in a geometry of spill-return orifice",
  annote="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 an influence 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-up process 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) of influences of spill-return orifice geometry on an atomization process.",
  booktitle="34th Conference of Departments of Fluids Mechanics and Thermomechanics Proceedings of Extended Abstracts",
  chapter="117073",
  edition="1",
  howpublished="print",
  year="2015",
  month="june",
  pages="1--2",
  type="conference paper"
}