한국화재소방학회논문지 (Fire Science and Engineering)

  • 제33권5호
  • /
  • Pages.48-54
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  • 2019
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  • 2765-060X(pISSN)
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  • 2765-088X(eISSN)
한국화재소방학회 (Korean Institute of Fire Science and Engineering)
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Eddy Dissipation Concept 연소모델을 적용한 백드래프트 대와동모사 연구

Large Eddy Simulation of Backdraft Using the Eddy Dissipation Concept Combustion Model

  • 하수임 (부경대학교 안전공학과 대학원) ;
  • 오창보 (부경대학교 안전공학과)
  • Ha, Suim (Dept. of Safety Engineering. Pukyong National University) ;
  • Oh, Chang Bo (Dept. of Safety Engineering. Pukyong National University)
  • 투고 : 2019.10.10
  • 심사 : 2019.10.16
  • 발행 : 2019.10.31
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초록

본 연구에서는 Eddy Dissipation Concept (EDC) 1-step 연소모델을 이용하여 백드래프트에 대한 대와동모사를 성공적으로 수행하였다. 기존 연구와는 달리 EDC 1-step의 유한화학반응에서 활성화에너지를 적절히 조절함으로써 백드래프트에 대한 예측이 가능하였다. EDC 1-step 연소모델을 이용한 예측결과는 Mixing-Controlled Fast Chemistry(MCFC) 연소모델의 예측결과와 비교 검토되었다. 얻어진 결과에서는 백드래프트 발생 시점을 제외하면 EDC 1-step과 MCFC 결과들은 매우 유사한 것을 확인하였고, 실험에서 얻어진 최고 압력값에 대해서도 합리적인 수준에서 예측하는 것은 알 수 있었다. 그러나 EDC 1-step 연소모델도 MCFC와 마찬가지로 백드래프트 전개과정의 첫 번째 압력 피크에 대해서는 예측하지 못하는 한계를 확인할 수 있었다.

A Large Eddy Simulation (LES), adopting the Eddy Dissipation Concept (EDC) 1-step model, was successfully performed for backdraft phenomena. The activation energy of the finite chemistry reaction in the EDC 1-step model was adjusted to simulate the backdraft. The prediction of the EDC 1-step model was similar to that of the Mixing-Controlled Fast Chemistry (MCFC) model, except when the backdraft occurred. The EDC 1-step model could be used to simulate the experimental peak pressure, but not the first peak pressure of the backdraft.

키워드

참고문헌

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