Phase-Shift Control of Combustion Instability Using (Combined) Secondary Fuel Injection and Acoustic Forcing
Phase-Shift Control of Combustion Instability Using (Combined) Secondary Fuel Injection and Acoustic Forcing
复制标题
使用（组合）二次燃油喷射和声强迫的燃烧不稳定性相移控制
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
C. Paschereit
中科院分区：
文献类型：
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作者：
J. Moeck;M. Bothien;D. Guyot;C. Paschereit
将相移控制应用于常压旋流稳定预混燃烧室。在控制方案中对两种不同的执行器进行了测试。一个开关阀用于调节二次先导燃料，一个扬声器提供燃烧器上游空气质量流的激励。在单独模式下，两个执行器都能够成功地控制低频燃烧不稳定性，并具有相似的抑制水平。先导阀也可以在主导振荡频率的次谐波下触发，而不会失去控制性能。与单独操作相比，同时使用两个执行器可以获得更好的抑制效果。进一步表明，脉冲先导燃料可用于辅助纯声学控制在有限的执行机构的权力。
Phase-shift control was applied to an atmospheric swirl-stabilized premixed combustor. Two different actuators were tested in the control scheme. An on-off valve was used to modulate secondary pilot fuel and a loudspeaker provided excitation of the air mass flow upstream of the burner. In individual mode, both actuators were able to successfully control a low-frequency combustion instability with similar levels of suppression. The pilot valve could also be triggered at subharmonics of the dominant oscillation frequency without loosing control performance. Using the two actuators simultaneously gave an even better suppression compared to individual operation. It was further shown that the pulsed pilot fuel could be used to assist purely acoustic control in the case of limited actuator authority.