Systems and apparatus relating to seals for turbine engines

A seal in a turbine of a combustion turbine engine, wherein the seal is formed within a trench cavity defined between a rotor blade and a stator blade, wherein the stator blade includes a sidewall projection extending toward the rotor blade and the rotor blade includes an angel wing projection extending toward the stator blade, the side wall projection overhanging the angel wing projection, the seal comprising:

• a port disposed on an inboard surface of a stator projection;
• and
• deflecting structure disposed on an outboard surface of the angel wing projection;
• wherein:
• the port is configured to direct a fluid expelled therefrom toward the deflecting structure;
• the deflecting structure is configured to receive the fluid expelled from the port and deflect the fluid toward an inlet of the trench cavity;
• the side wall projection axially overlaps the angel wing projection;
• the angel wing projection comprises a position inboard of the side wall projection;
• the fluid comprises a coolant;
• an inboard aimed reference line comprises a reference line originating at the port and aimed precisely in the inboard direction;
• the port comprises an axial aimed direction within +/−20° of the inboard aimed reference line;
• and
• the port comprises an circumferential aimed direction within +/−60° of the inboard aimed reference line.