Patent ID: 11965653
Assignee: GENERAL ELECTRIC COMPANY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A combustor for a gas turbine engine, the combustor comprising:
a combustor liner having a cold surface side and a hot surface side, the combustor liner defining an upstream end and a downstream end and defining a combustion chamber on the hot surface side;
a bypass oxidizer flow passage on the cold surface side of the combustor liner, the bypass oxidizer flow passage being defined between the cold surface side of the combustor liner and an outer casing of the combustor, the bypass oxidizer flow passage supplying a flow of oxidizer therethrough from the upstream end of the combustor liner to the downstream end of the combustor liner; and
a dilution opening through the combustor liner, the dilution opening comprising:
a cylindrical main dilution hole portion having an upstream edge and a downstream edge, a centerline axis extending through a centerpoint of the cylindrical main dilution hole portion;
a notched portion disposed at the upstream edge and extending upstream from the upstream edge, the notched portion being in fluid communication with the main dilution hole portion, and the notched portion, in a plan view of the cold surface side of the combustor liner, defining a V-shaped notch with an apex thereof arranged upstream of the upstream edge and the apex being arranged on the centerline axis, a width of a base of the V-shaped notch, with respect to the centerline axis at an intersection of the base with the upstream edge on the cold surface side of the combustor liner being less than a diameter of the cylindrical main dilution hole portion; and
a slotted portion disposed at the downstream edge and extending downstream of the downstream edge, the slotted portion being in fluid communication with the main dilution hole portion, and the slotted portion, in the plan view of the cold surface side of the combustor liner, defining a generally rectangular shape with a curved downstream end.