Turbomachine combustor and method for adjusting combustion dynamics in the same

摘要

A turbomachine (2) combustor includes a combustor cap (16) having a cap surface (32) and a wall (35) that define, at least in part, a resonator volume (40). A plurality of injection nozzle members extend from the cap surface (32). Each of the plurality of injection nozzle members include an inner nozzle member (60) and a plurality of outer nozzle members (62). An adjustable conduit (80) extends through the wall (35) into the resonator volume (40). The adjustable conduit (80) includes an internal passage (82) having a dimensional parameter. A combustor dynamics mitigation system (90) is operably connected to the combustor cap (16). The combustor dynamics mitigation system (90) includes a controller (160) configured and disposed to control one a size of the resonator volume (40) and the dimensional parameter of the adjustable conduit (80) to modify combustor dynamics in the combustor.