Asymmetric Baseplate Cooling with Alternating Swirl Main Burners

A combustor arrangement, comprising

• a pilot burner,
• a plurality of premix main swirlers concentrically disposed about the pilot burner, the main swirlers alternate between a main swirler that imparts a clockwise swirl and a main swirler that imparts a counter-clockwise swirl;
• and
• a base plate through which the main swirlers extend, wherein the base plate comprises a plurality of high-flow regions through each of which cooling fluid flows at a relatively higher flow-rate and a plurality of low-flow regions through each of which the cooling fluid flows at a relatively lower flow-rate,
• wherein the high-flow regions are disposed at locations such that cooling fluid flowing there through will be delivered to a respective inbound-zone that is formed where adjacent portions of adjacent main swirler flows flow into the pilot burner