Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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A Study on the Spray Characteristics of Swirl Injectors Using ANSYS Fluent

ANSYS Fluent를 이용한 와류형 분사기의 분무특성 연구

  • 윤원재 (충북대학교 기계공학부) ;
  • 이봄 (충북대학교 기계공학부) ;
  • 안규복 (충북대학교 기계공학부)
  • Received : 2017.02.27
  • Accepted : 2017.03.22
  • Published : 2017.12.30
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Abstract

Numerical studies on the spray characteristics of closed-type and open-type swirl injectors were conducted using ANSYS Fluent. By changing injection pressures, discharge coefficient and spray angle were calculated using the Reynolds stress BSL turbulent model. The numerical results were compared with previous experimental data to examine their accuracy. For a closed-type swirl injector, spray angles matched well with experimental results and discharge coefficients showed approximately 8% differences. On the contrary, discharge coefficients of an open-type swirl injector were similar with experimental result but its spray angles presented around 15% differences. Though the numerical results were not perfectly consistent with experimental data, it is thought that they could be sufficiently used for analyzing spray characteristics, specially which is hard to be measured from experiments. Numerical simulation with different turbulent models was also performed to examine their effects on the numerical results.

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