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首页> 外文期刊>Combustion Science and Technology >Plasma-Assisted Combustor Dynamics Control at Realistic Gas Turbine Conditions
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Plasma-Assisted Combustor Dynamics Control at Realistic Gas Turbine Conditions

机译：等离子体辅助燃烧器动力学控制在现实燃气轮机条件下

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This study investigated the effectiveness of implementing a plasma discharge to improve combustor dynamics and flame stability. Specifically, a nano-second pulsed plasma discharge (NSPD) was applied to a premixed gaseous fuel/air dump combustor for mitigation of dynamic combustion instabilities with a minimal NOX penalty. As a result, a significant reduction of pressure fluctuation level (2X to 4X) was observed at realistic low-power conditions of aero-engine combustors. The plasma power required for the reduction increased with increasing combustor inlet velocity and pressure. The change of fuel from methane to propane required significantly (2X) higher plasma power to achieve a similar noise reduction. The lean blowout limit was significantly extended due to the plasma; however, substantial incomplete combustion occurred in the extended regime. The incremental NOX production in the presence of the plasma was low (similar to 1EINO(X)); however, it increased with decreasing velocity and pressure, and increasing temperature.
机译：本研究调查了实施等离子体放电的有效性，以改善燃烧器动力学和火焰稳定性。具体地，将纳米第二脉冲等离子体放电（NSPD）应用于预混合的气体燃料/空气倾卸燃烧室，以减轻动态燃烧不稳定，最小的NOx罚款。结果，在航空发动机燃烧器的现实低功耗条件下观察到压力波动水平（2x至4x）的显着降低。随着燃烧器入口速度和压力的增加，减少所需的等离子体功率增加。从甲烷到丙烷的燃料的变化明显（2倍）更高的等离子体功率，以实现类似的降噪。由于等离子体，贫井喷限量显着延伸;然而，在延长的制度中发生了大量不完整的燃烧。在血浆存在下的增量NOx产生低（与＆ 1eino（x）类似）;然而，它随着速度和压力的降低和温度而增加。

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