Gas turbine component with fluid intake hole free of angled surface transitions

A gas turbine combustion duct, comprising:

• a duct body having an upstream end and a downstream end, the duct body including a duct wall defining a plenum for routing a flow of combustion products from upstream in a combustor through the gas turbine combustion duct downstream to a turbine section of a gas turbine, the duct wall having an inward-facing surface adjacent to the plenum, an outward-facing surface opposite the inward-facing surface, and a duct wall thickness between the inward-facing surface and the outward-facing surface;
• a fluid intake hole extending from the outward-facing surface to the inward-facing surface through the duct wall thickness for receiving a fluid flow of an external fluid from outside the plenum into the plenum, the fluid intake hole being laterally circumscribed about its entire periphery between the outward-facing surface and the inward-facing surface by a lateral-facing surface;
• and
• a boss portion of the duct wall, the boss portion:
• being immediately adjacent to and surrounding the fluid intake hole and including the lateral-facing surface;
• being continuously solid other than the fluid intake hole;
• being disposed between the fluid intake hole and a sheet portion of the duct wall, the sheet portion constituting a majority of the duct wall such that the fluid flow of the external fluid from outside the plenum flows along the sheet portion, over the boss portion, and into the fluid intake hole along the lateral-facing surface;
• and
• including a transition from the lateral-facing surface to the outward-facing surface at a zenith of the boss portion having a maximum thickness of the duct wall in the boss portion, the duct wall thickness at the boss portion being greater than the duct wall thickness at the sheet portion,
• wherein:
• the lateral-facing surface includes a curved surface portion along a shortest path from the inward-facing surface to the outward-facing surface;
• the lateral-facing surface is free of angled surface transitions along the shortest path between the inward-facing surface and the outward-facing surface;
• and
• the fluid intake hole is wider at the outward-facing surface than at the inward-facing surface.