COMBUSTION SYSTEM AND METHOD FOR ATTENUATION OF COMBUSTION DYNAMICS IN A GAS TURBINE ENGINE

The present disclosure is directed to a method of operating a combustion system to attenuate combustion dynamics. The method includes flowing, via a compressor section, an overall supply of air to thecombustion system; flowing, via a fuel supply system, an overall flow of fuel to the combustion system; flowing, to a first fuel nozzle of the combustion system, a first supply of fuel defining a richer burning fuel-air mixture at the first fuel nozzle; flowing, to a second fuel nozzle of the combustion system, a second supply of fuel defining a leaner burning fuel-air mixture at the second fuelnozzle; and igniting the richer burning fuel-air mixture and the leaner burning fuel-air mixture to produce an overall fuel-air ratio at a combustion chamber of the combustion system. 本公开涉及操作燃烧系统以衰减燃烧动力学的方法。所述方法包括：使总空气供应通过压缩机区段流动到所述燃烧系统；使总燃料流通过燃料供应系统流动到所述燃烧系统；使第一燃料供应流动到所述燃烧系统的第一燃料喷嘴，所述第一燃料供应在所述第一燃料喷嘴处形成富燃燃料空气混合物；使第二燃料供应流动到所述燃烧系统的第二燃料喷嘴，所述第二燃料供应在所述第二燃料喷嘴处形成贫燃燃料空气混合物；以及点燃所述富燃燃料空气混合物和所述贫燃燃料空气混合物，在所述燃烧系统的燃烧室处产生总燃料空气比。