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Recent Advances of Internal Cooling Techniques for Gas Turbine Airfoils
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The performance goal of modern gas turbine engines, both landbase and airbreathing engines, can be achieved by increasing the turbine inlet temperature (TIT). The level of TIT in the near future can reach as high as ...
Effects of Pin Detached Space on Heat Transfer in a Rib Roughened Channel
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An experimental study is performed to investigate the heat transfer characteristics and frictional losses in a rib roughened channel combined with detached pinfins. The overall channel geometry (W = 76.2 mm, E = 25.4 ...
Experimental and Numerical Analysis of Additively Manufactured Coupons With Parallel Channels and Inline Wall Jets
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Present paper developed a series of additively manufactured parallel cooling channels with streamwise wall jets inside, which could be suitable for double-wall and near-wall cooling configurations in gas turbine hot section ...
Surface Heater Fabrication Using Micro-Lithography for Transpiration Cooling Heat Transfer Coefficient Measurements
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Transpiration cooling is able to provide more uniform coolant coverage than film cooling to effectively protect the component surface from contacting the hot gas. Due to numerous coolant ejection outlets within a small ...
Convective Heat Transfer and Contact Resistances Effects on Performance of Conventional and Composite Thermoelectric Devices
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The performance of خ shaped conventional and composite thermoelectric devices (TEDs) applied to waste heat recovery by taking the Fourier heat conduction, Joule heating, and the Peltier and Thomson effects in TE materials ...
Thermoelectric Performance of Novel Composite and Integrated Devices Applied to Waste Heat Recovery
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Thermoelectric elements, made of semiconductor slices laminated onto highly conductive interconnector materials, are termed composite thermoelectric device (TED). An integrated TED is a composite TED with the interconnector ...
Fabrication and Characterization of Additive Manufactured Nickel-Based Oxide Dispersion Strengthened Coating Layer for High-Temperature Application
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Increasing turbine inlet temperature is important for improving the efficiency of gas turbine engine. Elevated thermal load causes severe oxidation and corrosion for base alloy in turbine airfoils. To survive in this extreme ...
Experimental Investigation on Additively Manufactured Transpiration and Film Cooling Structures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The last 50 years has witnessed significant improvement in film cooling technologies while transpiration cooling is still not implemented in turbine airfoil cooling. Although transpiration cooling could provide higher ...
Dimensional Characterizations Using Scanning Electron Microscope and Surface Improvement With Electrochemical Polishing of Additively Manufactured Microchannels
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Microchannel manufacturing is one of the fastest growing areas in advanced manufacturing with numerous applications, including turbine blade cooling structures, compact microchannel heat exchangers, and electronic cooling ...
Smart Guidewires for Smooth Navigation in Neurovascular Intervention
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Smart nitinol guidewires have been proposed to improve trackability, facilitating the advancement of catheters through complex vascular anatomies during neurovascular interventions. A smart 0.015 in. diameter nitinol ...