Detail publikace

Výzkum a porovnání vlastností spreje tlakových vířivých trysek pro malý letecký turbomotor

ĎURDINA, L. JEDELSKÝ, J. JÍCHA, M.

Originální název

Investigation and comparison of spray characteristics of pressure-swirl atomizers for a small-sized aircraft turbine engine

Český název

Výzkum a porovnání vlastností spreje tlakových vířivých trysek pro malý letecký turbomotor

Anglický název

Investigation and comparison of spray characteristics of pressure-swirl atomizers for a small-sized aircraft turbine engine

Typ

článek v časopise

Jazyk

en

Originální abstrakt

The quality of liquid fuel atomization highly affects the formation of gaseous pollutants and particulate matter emissions from combustion processes. Spray characteristics of two geometrically different pressure-swirl atom-izers for a turbojet engine in light aircraft were measured on a cold test bench. A spill-return atomizer and its intended replacement simplex atomizer were investigated using Particle Image Velocimetry (PIV) and Phase-Doppler Anemometry (PDA). Single-camera and stereoscopic PIV measurements yielded velocity distributions in the axial cross-section of the spray cone. PDA measurements provided dropsize distribution and axial velocity data. Acquired results reveal significant differences in spray characteristics of the nozzles investigated at the same fuel injection pressures. The simplex nozzle produced spray with Sauter mean diameters lower by 5–20 um depending on the regime, its spray was more stable but its shape greatly varied with fuel injection pressure. These differences are discussed in detail, their analysis indicate a potential for spray improvement provided by the novel atomizer design and elucidates the possible impact of the nozzle replacement on the combustion process.

Český abstrakt

Příspěvek popisuje porovnání vlastností spreje dvou tlakových vířivých trysek pro malý letecký turbomotor. Sprej je zkoumán pomocí metod PIV (particle image velocimetry) a PDA (phase-Doppler anemometry) a předmětem je rychlostní pole ve spreji, rozložení kapaliny ve spreji a velikost kapek.

Anglický abstrakt

The quality of liquid fuel atomization highly affects the formation of gaseous pollutants and particulate matter emissions from combustion processes. Spray characteristics of two geometrically different pressure-swirl atom-izers for a turbojet engine in light aircraft were measured on a cold test bench. A spill-return atomizer and its intended replacement simplex atomizer were investigated using Particle Image Velocimetry (PIV) and Phase-Doppler Anemometry (PDA). Single-camera and stereoscopic PIV measurements yielded velocity distributions in the axial cross-section of the spray cone. PDA measurements provided dropsize distribution and axial velocity data. Acquired results reveal significant differences in spray characteristics of the nozzles investigated at the same fuel injection pressures. The simplex nozzle produced spray with Sauter mean diameters lower by 5–20 um depending on the regime, its spray was more stable but its shape greatly varied with fuel injection pressure. These differences are discussed in detail, their analysis indicate a potential for spray improvement provided by the novel atomizer design and elucidates the possible impact of the nozzle replacement on the combustion process.

Klíčová slova

sprej, tlaková vířivá tryska, PIV, PDA, particle image velocimetry; phase-Doppler anemometry; velikost kapek

Rok RIV

2014

Vydáno

08.08.2014

Nakladatel

Elsevier

Místo

The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England

Strany od

892

Strany do

900

Strany počet

9

URL

Plný text v Digitální knihovně

BibTex


@article{BUT108734,
  author="Lukáš {Ďurdina} and Jan {Jedelský} and Miroslav {Jícha}",
  title="Investigation and comparison of spray characteristics of pressure-swirl atomizers for a small-sized aircraft turbine engine",
  annote="The quality of liquid fuel atomization highly affects the formation of gaseous pollutants and particulate matter emissions from combustion processes. Spray characteristics of two geometrically different pressure-swirl atom-izers for a turbojet engine in light aircraft were measured on a cold test bench. A spill-return atomizer and its intended replacement simplex atomizer were investigated using Particle Image Velocimetry (PIV) and Phase-Doppler Anemometry (PDA). Single-camera and stereoscopic PIV measurements yielded velocity distributions in the axial cross-section of the spray cone. PDA measurements provided dropsize distribution and axial velocity data. Acquired results reveal significant differences in spray characteristics of the nozzles investigated at the same fuel injection pressures. The simplex nozzle produced spray with Sauter mean diameters lower by 5–20 um depending on the regime, its spray was more stable but its shape greatly varied with fuel injection pressure. These differences are discussed in detail, their analysis indicate a potential for spray improvement provided by the novel atomizer design and elucidates the possible impact of the nozzle replacement on the combustion process.",
  address="Elsevier",
  chapter="108734",
  doi="10.1016/j.ijheatmasstransfer.2014.07.066",
  institution="Elsevier",
  number="11",
  volume="78",
  year="2014",
  month="august",
  pages="892--900",
  publisher="Elsevier",
  type="journal article"
}