Apparatus and method for mitigating particulate accumulation on a component of a gas turbine engine

A shell of a combustor for a gas turbine engine, the shell comprising:

• a combustion chamber of the combustor, the combustion chamber having a combustion area;
• a combustion liner having an inner surface and an outer surface opposite the inner surface;
• a heat shield panel interposed between the inner surface of the combustion liner and the combustion area, the heat shield panel having a first surface and a second surface opposite the first surface, wherein the second surface is oriented towards the inner surface, and wherein the heat shield panel is separated from the combustion liner by an impingement cavity;
• and
• a particulate mitigation device attached to the combustion liner, the particulate mitigation device extending from the outer surface of the combustion liner into a flow path, the particulate mitigation devices having an opening at a first selected distance away from the outer surface, the opening being fluidly connected with the impingement cavity, and wherein the first selected distance is greater than or equal to a boundary layer of the second surface.