Effect of Fuel Staging on Thermoacoustic Oscillation of a Marine Gas Turbine Combustor

ZHOU Yufan; LU Yudi; WU Huiyu; LIU Xianda; GE Bing

doi:10.19805/j.cnki.jcspe.2026.250030

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Effect of Fuel Staging on Thermoacoustic Oscillation of a Marine Gas Turbine Combustor

更新时间：2026-10-10

- Effect of Fuel Staging on Thermoacoustic Oscillation of a Marine Gas Turbine Combustor
- Chinese Journal of Power Engineering Vol. 46, Issue 5, Pages: 82-89,96(2026)
- 作者机构：
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- DOI：10.19805/j.cnki.jcspe.2026.250030
  CLC： TK478.9
- Published：2026
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周宇凡, 陆羽笛, 吴慧羽, 刘先达, 葛冰. 燃料分级对舰船燃气轮机燃烧室热声振荡的影响[J]. 动力工程学报, 2026, 46(5): 82-89,96.
周宇凡, 陆羽笛, 吴慧羽, 刘先达, 葛冰. 燃料分级对舰船燃气轮机燃烧室热声振荡的影响[J]. 动力工程学报, 2026, 46(5): 82-89,96. DOI： 10.19805/j.cnki.jcspe.2026.250030.

DOI： 10.19805/j.cnki.jcspe.2026.250030

摘要

针对为舰船燃气轮机设计的十喷嘴柴油燃烧室开展试验

采用脉动压力和图像同步采集的方法采集数据

并采用本征正交分解(POD)的方法研究燃料分级方案对热声稳定性的影响。结果表明:对于柴油多喷嘴贫预混燃烧室

开启值班级喷嘴后振荡频率相较于开启前降低了11%;调节燃料分级比可以抑制燃烧室的压力脉动

脉动幅值降低比例可达到60%;不开启值班级时振荡模式为双周期极限环振荡

而开启值班级后的振荡为单周期极限环振荡;火焰热释放率振荡与压力振荡的频率基本吻合

各喷嘴达到热声耦合状态;振荡的主要能量集中于全局的轴向同步振荡

但同时存在能量较低的周向振荡模式。

Abstract

For a ten-nozzle diesel combustor designed for marine gas turbine

experiments were conducted to analyze the effect of fuel staging on its thermoacoustic instability properties by using simultaneous pulsation pressure and image acquisition method and proper orthogonal decomposition (POD) method. Results show that in a diesel multi-nozzle lean premix combustion chamber

the oscillation frequency after opening the pilot nozzle decreases by 11% compared to before opening. Adjusting the fuel staging can suppress the pressure pulsation within the combustion chamber by up to 60%. The oscillation mode is a double limit cycle oscillation with pilot nozzle off

while the oscillation becomes a single limit cycle oscillation with pilot nozzle on. The frequency of the flame heat-release rate oscillation is largely in line with the frequency of pressure oscillation

with the nozzles in the state of thermo-acoustic coupling. The main energy of the oscillations is concentrated in the global axial synchronous oscillation

and there are also circumferential oscillation modes with reduced energy.

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references

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