대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제31권12호
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  • Pages.1042-1047
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  • 2007
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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마이크로 사이클론 연소기의 혼합 및 유동특성에 관한 수치해석 연구

Numerical Simulation of the Mixing and Flow Characteristics in a Micro Cyclone Combustor

  • 최병일 (한국기계연구원, 에너지기계연구센터) ;
  • 한용식 (한국기계연구원, 에너지기계연구센터) ;
  • 김명배 (한국기계연구원, 에너지기계연구센터) ;
  • 황철홍 (인하대학교, 기계공학부) ;
  • 오창보 (부경대학교, 안전공학부)
  • 발행 : 2007.12.01
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초록

A micro cyclone combustor was developed to be used as a heat source of thermoelectric power generator (TPG). The cyclone combustor was designed so that fuel and air were supplied to the combustion chamber separately. The mixing and flow characteristics in the combustor were investigated numerically. The global equivalence ratio ($\Phi$), defined using the fuel and air flow rates, was introduced to examine the flow features of the combustor. The mixing of fuel and air inside the combustor could be well understood using the fuel concentration distribution. It was found that the weak recirculating zone was formed upper the fuel-supplying tube in case of ${\Phi}$<1.0. In addition, it was found that small regions that have a negative axial velocity exist near the fuel injection ports. It is assumed that these negative axial velocity regions can stabilize a flame inside the micro cyclone combustor.

키워드

참고문헌

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