ENGINE COMPONENT
PROBLEM TO BE SOLVED: To provide a turbine component having film holes with improved cooling.SOLUTION: An engine component for a gas turbine engine includes a film-cooled substrate having a hot surface facing a hot combustion gas and a cooling surface facing a cooling fluid flow. The substrate inclu...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a turbine component having film holes with improved cooling.SOLUTION: An engine component for a gas turbine engine includes a film-cooled substrate having a hot surface facing a hot combustion gas and a cooling surface facing a cooling fluid flow. The substrate includes one or more film holes that have a metering section, which defines a metering diameter D, and a diffusing section, which has a downstream boundary surface and an upstream boundary surface and defines a hooded length. The diffusing section defines the hooded length L as the distance along the upstream boundary surface between a downstream end of the metering section and the hot surface (84), and 1≤L/D≤6 is satisfied.SELECTED DRAWING: Figure 1
【課題】冷却が改善されたフィルム孔を有するタービン構成部品を提供すること。【解決手段】ガスタービンエンジンのためのエンジン構成部品は、高温燃焼ガスに面する高温面、及び冷却流体流れに面する冷却面を有するフィルム冷却基材を含む。基材は、絞り径Dを画定する絞りセクション、及び下流境界面と上流境界面とを備えフード付き長さを画定する拡散セクションを有する1つ又は複数のフィルム孔を含む。拡散セクションは、絞りセクションの下流端と高温面(84)との間の前記上流境界面に沿った距離としてフード付き長さLを画定し、1≦L/D≦6である。【選択図】図1 |
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