초록 ▼

A method is described for improving the cooling effectiveness of a fluid which flows through a row of passage holes in a substrate (e.g., a turbine component), out to a high-temperature surface of the substrate. The method involves forming a slot over the holes, within the high temperature surface o

A method is described for improving the cooling effectiveness of a fluid which flows through a row of passage holes in a substrate (e.g., a turbine component), out to a high-temperature surface of the substrate. The method involves forming a slot over the holes, within the high temperature surface of the substrate. The slot can be formed within protective coatings applied over the substrate. Alternatively, it can be formed partially within the substrate, and partially within the protective coatings. Movement of a film coolant through the substrate and into the slot results in greater cooling effectiveness. Related articles are also described.

대표청구항 ▼

[ What is claimed:] [1.]1. A method for improving the cooling effectiveness of a fluid which flows through a row or other pattern of passage holes in a substrate, out to a high-temperature surface of the substrate,said method comprising the step of forming a slot over the holes, within the high-temp

[ What is claimed:] [1.]1. A method for improving the cooling effectiveness of a fluid which flows through a row or other pattern of passage holes in a substrate, out to a high-temperature surface of the substrate,said method comprising the step of forming a slot over the holes, within the high-temperature surface of the substrate,wherein the holes have an average throat diameter d, and the slot has a depth D into the high-temperature surface of the substrate, and wherein the depth D of the slot is less than the average throat diameter d of the holes.