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Convex Curvature Effects on Film Cooling Adiabatic Effectiveness
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Surface curvature is known to have significant effects on film cooling performance, with convex curvature inducing increased film effectiveness and concave curvature causing decreased film effectiveness. Generally, these ...
Evaluation of Superposition Predictions for Showerhead Film Cooling on a Vane
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The leading edge of a turbine vane is subject to some of the highest temperature loading within an engine, and an accurate understanding of leading edge film coolant behavior is essential for modern engine design. Although ...
Effect of Internal Crossflow Velocity on Film Cooling Effectiveness—Part I: Axial Shaped Holes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effect of feeding shaped film cooling holes with an internal crossflow is not well understood. Previous studies have shown that internal crossflow reduces film cooling effectiveness from axial shaped holes, but little ...
Effect of Internal Crossflow Velocity on Film Cooling Effectiveness—Part II: Compound Angle Shaped Holes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In gas turbine engines, film cooling holes are commonly fed with an internal crossflow, the magnitude of which has been shown to have a notable effect on film cooling effectiveness. In Part I of this study, as well as in ...
Direct Experimental Measurements of Heat Transfer Coefficient Augmentation Due to Approach Flow Effects
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Film cooling can have a significant effect on the heat transfer coefficient (HTC) between the overflowing freestream gas and the underlying surface. This study investigated the influence of approach flow characteristics, ...
The Effect of Internal Crossflow on the Adiabatic Effectiveness of Compound Angle Film Cooling Holes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In gas turbine engines, film cooling holes are often fed by an internal crossflow, with flow normal to the direction of the external flow around the airfoil. Many experimental studies have used a quiescent plenum to feed ...