Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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An Evaluation of Numerical Schemes in a RANS-based Simulation for Gaseous Hydrogen/Liquid Oxygen Flames at Supercritical Pressure

초임계 압력하의 기체수소-액체산소 화염에 대한 난류모델을 이용한 해석에서 수치기법 평가

  • 김원현 (경북대학교 기계공학부) ;
  • 박태선 (경북대학교 기계공학부)
  • Received : 2012.11.28
  • Accepted : 2013.03.26
  • Published : 2013.06.01
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Abstract

Turbulent flow and thermal fields of gaseous hydrogen/liquid oxygen flames at supercritical pressure are investigated by turbulence models. The modified Soave-Redlich-Kwong (SRK) EOS is implemented into the flamelet model to realize real-fluid combustions. For supercritical fluid flows, the modified pressure-velocity-density coupling are introduced. Based on the algorithm, the relative performance of six convection schemes and the predictions of four turbulence models are compared. The selected turbulence models are needed to be modified to consider various characteristics of real-fluid combustions.

초임계조건의 기체수소/액체산소 화염의 난류유동 및 온도장에 대해 난류모델을 이용한 해석이 수행되었다. 실제유체의 연소유동을 해석하기 위하여 화염편모델에 SRK 상태방정식이 도입되었다. 수정된 압력-속도-밀도 연계알고리듬이 초임계유동에 적용되었다. 수정된 알고리듬을 토대로 6개의 대류항 차분법과 4개의 난류모델의 상대적인 성능비교가 이루어졌다. 선택된 난류모델들은 실제유체 연소유동의 다양한 특징을 고려하기 위해서 수정이 필요함을 나타내었다.

Keywords

References

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