An experimental study on the spray characteristics of a dual-orifice type swirl injector at low fuel temperatures

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Abstract

The objective of this study is to investigate the effects of fuel temperature on the spray characteristics of a dual-orifice type swirl injector used in a gas turbine. The major parameters affecting spray characteristics are fuel temperature and injection pressure entering into the injector. In this study, the spray characteristics of a dual-orifice type swirl injector are investigated by varying fuel temperature from -30°C to 120°C and injection pressure from 0.29 to 0.69 MPa. Two kinds of fuel having different surface tension and viscosity are chosen as atomizing fluids. As a result, injection instability occurs in the low fuel temperature range due to icing phenomenon and fuel property change with a decrease of fuel temperature. As the injection pressure increases, the range of kinematic viscosity for stable atomization becomes wider. The properties controlling the SMD of spray is substantially different according to the fuel temperature range.

Original languageEnglish
Pages (from-to)1187-1195
Number of pages9
JournalKSME International Journal
Volume18
Issue number7
DOIs
Publication statusPublished - 2004 Jul

Keywords

  • Equivalent Spray Angle
  • Fuel Temperature
  • Injection Instability
  • SMD
  • Spray

ASJC Scopus subject areas

  • Mechanical Engineering

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