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  • effects of operating pressure on flame oscillation and emission characteristics in a partially premixed swirl combustor

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1020
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the influence of varying combustor pressure on flame oscillation and emission characteristics in the partially premixed turbulent flame were investigated. in order to investigate combustion characteristics in the partially premixed turbulent flame, the combustor pressure was controlled in the range of −30 to 30 kpa for each equivalence ratio (φ = 0.8–1.2). the r.m.s. of the pressure fluctuations increased with decreasing combustor pressure for the lean condition. the combustor pressure had a sizeable influence on combustion oscillation, whose dominant frequency varied with the combustor pressure. combustion instabilities could be controlled by increasing the turbulent intensity of the unburned mixture under the lean condition. an unstable flame was caused by incomplete combustion; hence, eico greatly increased. furthermore, einox simply reduced with decreasing combustor pressure at a rate of 0.035 g/10 kpa. the possibility of combustion control on the combusting mode and exhaust gas emission was demonstrated.

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