Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Estimation of Thermodynamic/Transport Properties of Kerosene using a 3-Species Surrogate Mixture

3-화학종 대체 혼합물을 이용한 케로신의 열역학적·전달 상태량 예측

  • Received : 2013.01.18
  • Accepted : 2013.10.22
  • Published : 2013.11.01
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Abstract

Kerosene(Jet A-1), one of the propellants for each stage's engine of the Korea Space Launch Vehicle-II(KSLV-II), functions as coolant at the same time as it flows inside the cooling jacket of the combustion chambers and is injected through the film cooling holes. A physical surrogate mixture model to reproduce the thermophysical characteristics of Jet A-1 has been selected and the thermodynamic/transport properties of the model fuel under high pressure including supercritical conditions have been estimated using SUPERTRAPP(NIST SRD4). Comparisons with the measured properties suggest that proposed database can be used to extract properties of Jet A-1 for conjugate heat transfer analysis of liquid propellant rocket engine thrust chambers. Predicted combustion/cooling performance of regeneratively cooled thrust chambers shall be validated through comparisons with upcoming firing test results.

한국형발사체(KSLV-II) 각 단 엔진의 연료로 사용되는 케로신(Jet A-1)은 추력실 재생냉각 및 연료 막냉각 과정에서 냉각유체로도 기능하게 된다. 본 연구에서는 Jet A-1의 열물리적 특성을 재현하기 위한 대체 혼합물 모델을 선정하고, SUPERTRAPP(NIST SRD4)을 이용하여 초임계압 영역을 포함하는 고압 영역에서 모델 연료의 열역학적 전달 상태량을 예측하였다. 측정값과의 비교 결과 액체로켓 엔진 추력실의 복합 열전달 해석 수행 시 Jet A-1 상태량을 추출하기 위한 데이터베이스로 활용 가능한 것으로 판단되며, 향후 연소 시험 결과와의 비교를 통하여 케로신 대체 모델의 상태량 정보를 이용한 재생냉각 추력실의 연소 냉각 성능 통합 해석 결과를 지속적으로 검증해 나갈 계획이다.

Keywords

References

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