장애물이 있는 챔버 내부의 정전기 방전 에너지에 의한 가스 폭 발시 초기화염과 화염전파 특성에 대한 PIV 계측 (PIV Measurements on the Flame Initiation and Propagation under Gas Explosions by Electrostatic Discharge Energies in a Confined Chamber with an Obstacle)

서지정보

· 발행기관 : 대한기계학회
· 수록지 정보 : 대한기계학회논문집 B / 33권 / 9호 / 682 ~ 687페이지
· 저자명 : 박달재, 이석환, 성재용, 이영순

초록

In order to investigate the effects of three different electrostatic discharge energies on gas explosions, a
high-speed PIV system has been applied. The present study paid attention to the flame initiation by the gas
explosions and its propagation at the existence of an obstacle within a chamber. Three different ignition
energies such as 0.56 mJ, 52.87 mJ and 112.5 mJ were used. It is found that the ignition kernel is bent by the
electrostatic discharge during the flame initiation. Tangential velocities of unburnt mixture ahead of initially
propagating flame fronts are increased with increasing ignition energy, which makes the flame propagation
faster before it reaches the obstacle. Although the flame speed was found to be less sensitive to the ignition
energies, the flame developments were different. The effects of the energies on explosion pressures were also
discussed.

영어초록

In order to investigate the effects of three different electrostatic discharge energies on gas explosions, a
high-speed PIV system has been applied. The present study paid attention to the flame initiation by the gas
explosions and its propagation at the existence of an obstacle within a chamber. Three different ignition
energies such as 0.56 mJ, 52.87 mJ and 112.5 mJ were used. It is found that the ignition kernel is bent by the
electrostatic discharge during the flame initiation. Tangential velocities of unburnt mixture ahead of initially
propagating flame fronts are increased with increasing ignition energy, which makes the flame propagation
faster before it reaches the obstacle. Although the flame speed was found to be less sensitive to the ignition
energies, the flame developments were different. The effects of the energies on explosion pressures were also
discussed.

참고자료

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