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RISEffect of Coolant Crossflow on Film Cooling Effectiveness of Diffusion Slot Hole With and Without Ribs
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The coolant flow condition at the film hole entrance has a notable effect on film cooling effectiveness. The previous studies about internal ribbed crossflow effects are the hole with a circular inlet cross section. In ...
Numerical Investigation on Diffusion Slot Hole With Various Cross-Sectional End Shapes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The diffusion hole constructed on a slot-type cross section has the potential to obtain high film cooling performance. However, the end shape of the cross section can greatly affect film cooling characteristics. This study ...
Numerical Investigation on Film Cooling Performance of Fusiform Diffusion Holes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a numerical investigation of the film-cooling performance of a kind of diffusion hole with a fusiform cross section. Relative to the rectangular diffusion hole, the up- and/or downstream wall of the ...
Film Cooling Effectiveness on Pressure Surface and Suction Surface of Turbine Guide Vane With Diffusion Slot Holes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper investigated the film-cooling effectiveness of diffusion slot holes in a turbine nozzle guide vane. The pressure-sensitive paint measurement technique was employed to obtain the film-cooling effectiveness at a ...
Effects of Ribbed Crossflow Channel in a Turbine Blade on Film Cooling Performance of Diffusion Slot Holes with Various Cross Section Orientations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper investigates the influence of ribbed crossflow on the film cooling performance of a turbine rotor blade. A pressure-sensitive paint measurement technique was employed to measure the effectiveness of film cooling. ...
Multirow Film-Cooling Effectiveness of Vertically Oriented Slot Cross-Section Diffusion Holes on a Turbine Nozzle Guide Vane Suction Surface
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this article, a multirow film-cooling effectiveness experiment was conducted on a turbine nozzle guide vane suction surface using the pressure-sensitive paint (PSP) measurement technique. Five rows of film holes were ...
Film-Cooling Effectiveness on a Turbine Blade Platform With Various Hole Shapes and Layouts
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper reports a film-cooling effectiveness experiment on a turbine blade platform that combines two film hole shapes with three layouts. A linear cascade using the pressure-sensitive paint (PSP) technique was employed ...
Geometrical Parameter Effects on Film-Cooling Effectiveness of Rectangular Diffusion Holes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an experimental investigation of the rectangular diffusion hole. The effects of rectangular aspect ratio and lateral diffusion angle on film-cooling effectiveness were studied at a low-speed flat-plate ...
Film Cooling of Cylindrical Hole With a Downstream Short Crescent Shaped Block
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a method to improve the filmcooling effectiveness of cylindrical holes. A short crescentshaped block is placed at the downstream of a cylindrical cooling hole. The block shape is defined by a number of ...
Effects of Inclination Angle, Orientation Angle, and Hole Length on Film Cooling Effectiveness of Rectangular Diffusion Holes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Film-cooling effectiveness of rectangular diffusion holes under an inclination angle α = 45 deg, an orientation angle β = 45 deg, and a length-to-diameter ratio of L/D = 8.5 were, respectively, examined in a flat-plate ...