Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
권호 표지

Macroscopic Breakup Characteristics of Water Gel Simulants with Triplet Impinging Spray Jet

젤 모사 추진제 삼중 충돌 분사 제트의 거시적 분열 특성 연구

  • 황태진 (한국항공대학교 대학원) ;
  • 이인철 (한국항공대학교 대학원) ;
  • 구자예 (한국항공대학교 항공우주및기계공학부)
  • Received : 2010.02.02
  • Accepted : 2010.09.27
  • Published : 2010.09.30
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Abstract

The implementation of gelled propellants systems offers high performance, energy management of liquid propulsion, storability, and high density impulse of solid propulsion. The present study focused on the macroscopic spray characteristics of liquid sheets formed by triplet impinging jets of non-Newtonian liquids which are mixed by Carbopol 941 0.5%wt. The results are compared to experiments conducted on spray images which formed by triplet impinging jets concerning with airassist effect at center orifice. When gel propellants are injected by doublet impinging jets at low pressure and high pressure, closed rim pattern shape appeared by polymeric effect from molecular force and showed inactive atomization characteristics, because of extensional viscosity related by restriction of atomization process and breakup time delay of turbulence transition. As increasing mass flow rate of the air(increasing GAR), spray breakup level is also increased.

Keywords

References

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