Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Computational Analysis of the Under-Expanded Moist Air Jet

부족팽창 습공기제트에 관한 수치해석적 연구

  • 백승철 (한국원자력연구소 열수력안전연구부) ;
  • 송철화 (한국원자력연구소 열수력안전연구부) ;
  • 세토구치 (일본 사가대학교) ;
  • 김희동 (안동대학교 기계공학부)
  • Published : 2005.02.01
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Abstract

The under-expanded jet discharged from a nozzle or an orifice has been extensively employed in industrial applications and aerospace technologies. A number of studies have been made to investigate the under-expanded jet structures such as Mach disk, barrel shock wave, jet boundary configuration, etc. In the current study, a computational work is performed to investigate the effect of non-equilibrium condensation of moist air on the under-expanded jet, which is discharged from a sonic nozzle. The results obtained are compared with an available experimental data. It is found that non-equilibrium condensation of moist air alleviates the oscillations of the under-expanded jet, and can increase Mach disk diameter, without changing the location.

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References

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