Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Evaluation of Turbulent Flame Speed Model for Turbulent Premixed Combustion Flow around Bluff Body

보염기 주위의 난류 예혼합 연소에 관한 난류화염 속도 모델의 평가

  • 박남섭 (유한대학 기계과) ;
  • 고상철 (전주대학교 기계자동차공학과)
  • Received : 2010.07.23
  • Accepted : 2010.10.25
  • Published : 2011.01.31
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Abstract

The objective of this study is to investigate the validity of the dynamic sub-grid G-equation model to a complex turbulent premixed combustion such as bluff body stabilized turbulent premixed flames for the considering of the realistic engineering application. In this study, a new turbulent flame speed model, introduced by the sub-grid turbulent diffusivity and the flame thickness, is also proposed and is compared with an usual model using sub-grid turbulent intensity and with the experimental data. The calculated results can predict the velocity and temperature of the combustion flow in good agreement with the experiment data.

본 연구의 목적은 실용연소기를 대상으로 한 복잡한 난류 연소장에의 Dynamic SGS G-방정식의 유용성을 확인하는 데에 있다. 본 연구에서는 sub-grid 난류확산과 화염 두께에 근거한 새로운 난류화염 전파속도 모델을 제안하였으며, sub-grid 난류강도를 이용한 기존 모델과의 비교, 검증을 수행하였다. 해석결과는 실험결과와의 비교를 통해 속도와 온도분포를 잘 예측하고 있음을 확인하였다.

Keywords

References

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