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RISFilm Cooling Modeling of Turbine Blades Using Algebraic Anisotropic Turbulence Models
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The complex structures in the flow field of gas turbine film cooling increase the anisotropy of turbulence making it difficult to accurately compute turbulent eddy viscosity and scalar diffusivity. An algebraic anisotropic ...
Experimental Investigation of Endwall Heat Transfer With Film and Impingement Cooling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The switch from diffusive combustion to premixed combustion in a modern gas turbine changes the combustor exit temperature profile to a more uniform one. This will directly affect the cooling of the first stage vane ...
A New Molecular Insight in Effects of Alcohol Co-Solvents on Miscibility of Anhydrous Ethanol/Diesel Blends
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Sustainable policy leads to partially replace fossil diesel by bio-fuels and ethanol/diesel blends. The major challenge is how to enhance miscibility of ethanol with diesel. Molecular dynamics simulation was applied to ...
Effect of Reynolds Number, Hole Patterns, and Target Plate Thickness on the Cooling Performance of an Impinging Jet Array—Part II: Conjugate Heat Transfer Results and Optimization
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study comprehensively illustrates the effect of Reynolds number, hole spacing, nozzle-to-target distance, and target plate thickness on the conjugate heat transfer (CHT) performance of an impinging jet array. Test ...
Algebraic Anisotropic Turbulence Modeling of Compound Angled Film Cooling Validated by Particle Image Velocimetry and Pressure Sensitive Paint Measurements
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The complex structures in the film cooling flow field of gas turbines lead to the anisotropic property of the turbulent eddy viscosity and scalar diffusivity. An algebraic anisotropic turbulence model is developed aiming ...
A Novel Method for Designing Fan-Shaped Holes With Short Length-to-Diameter Ratio in Producing High Film Cooling Performance for Thin-Wall Turbine Airfoil
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An experimental investigation of the geometrical parameter effects on the film cooling performance of a fan-shaped hole was conducted on a low speed flat-plate facility. The pressure sensitive paint (PSP) technique and ...
On Improving Full-Coverage Effusion Cooling Efficiency by Varying Cooling Arrangements and Wall Thickness in Double Wall Cooling Application
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Overall cooling effectiveness was determined for a full-coverage effusion cooled surface which simulated a portion of a double wall cooling gas turbine blade. The overall cooling effectiveness was measured with high ...
Effect of Reynolds Number, Hole Patterns, and Hole Inclination on Cooling Performance of an Impinging Jet Array—Part I: Convective Heat Transfer Results and Optimization
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study comprehensively illustrates the effect of Reynolds number, hole spacing, jet-to-target distance, and hole inclination on the convective heat transfer performance of an impinging jet array. Spatially resolved ...
Generation of an Improved Precipitation Dataset from Multisource Information over the Tibetan Plateau
Publisher: American Meteorological Society
Enhancement of Film Cooling Effectiveness Using Dean Vortices
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Film cooling technology is widely used in gas turbines. With the additive manufacturing anticipated in the future, there will be more freedom in film cooling hole design. Exploiting this freedom, the present authors tried ...