Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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A Comparison Study of the Prediction Performance of FDS Combustion Model for the Jet Diffusion Flame Structure

제트 확산화염구조에 대한 FDS 연소모델의 예측성능 비교 연구

  • Park, Eun-Jung (Department of Safety Engineering, Pukyong National University) ;
  • Oh, Chang-Bo (Department of Safety Engineering, Pukyong National University)
  • 박은정 (부경대학교 안전공학부) ;
  • 오창보 (부경대학교 안전공학부)
  • Received : 2010.01.15
  • Accepted : 2010.06.14
  • Published : 2010.06.30
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Abstract

A prediction performance of Fire Dynamics Simulator(FDS) developed by NIST for the diffusion flame structure was validated with experimental results of a laminar slot jet diffusion flame. Two mixture fraction combustion models and two finite chemistry combustion models were used in the FDS simulation for the validation of the jet diffusion flame structure. In order to enhance the prediction performance of flame structure, DNS and radiation model was applied to the simulation. The reaction rates of the finite chemistry combustion models were appropriately adjusted to the diffusion flame. The mixture fraction combustion model predicted the diffusion flame structure reasonably. A 1-step finite chemistry combustion model cannot predict the flame structure well, but the simulation results of a 2-step model were in good agreement with those of experiment except $CO_2$ concentration. It was identified that the 2-step model can be used in the investigation of flame suppression limit with further adjustment of reaction rates

Keywords

Acknowledgement

Supported by : 한국과학기술정보연구원

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