Numerical Simulations for Combustion and NOx Emission Characteristics in Oscillating Combustion Burner

수치해석을 이용한 맥동연소과정 및 NOx 배출특성 해석

  • 김후중 ((주)경원테크 AE연구소) ;
  • 조한창 ((재)포항산업과학연구원)
  • Received : 2009.09.04
  • Accepted : 2009.09.25
  • Published : 2009.09.30


An experimental study was conducted to reduce NOx emission in RT(radiant tube)burner by using oscillating combustion processes in RIST. A solenoid valve gives the various oscillating conditions, such as oscillation frequency, duty ratio of fuel flow. In this study, we used commercial software, CFD-ACE+ to predict combustion and NOx emission characteristics for various experimental oscillation conditions. The effect of oscillation frequency and duty ratio on NOx emission will be discussed in terms of flow field, temperature and equivalence ratio distributions in detail.