– Impingement Cooling
– Impingement Jet Array Heat Transfer With Surface Textures
– Surface Roughness Characterization and Analysis
– Dimple Surface Arrays
– Swirl Chambers
– Surface Heat Transfer Augmentation Within Internal Passages
– Film Cooling
– Full-Coverage Film Cooling
– Double Wall Cooling
– Second Law Analysis of Film Cooling
– Aerodynamic Losses From Turbine Airfoils
– Transonic Turbine Blade Tips
– Transonic Turbine Blade Tips With Film Cooling
– Transonic Turbine Alloy Blades
– Supersonic Flow Experimental Results
– Shock Wave Unsteady Interactions
– Viscous Dissipation Within a Transonic Flow Environment
– Transitional Flows in Curved Channels
– Dean Flow Dynamics in Low-Aspect Ratio Spiral Microchannels
– Unsteady Laminar Impinging Slot Jets
– Electronics Cooling
– Miniature and Micro-Scale Pumps
– Slip Rarefaction Phenomena
– Elastic Instabilities
– Buoyancy-Driven Continuous SPLITT Fractionation
TRANSONIC TURBINE ALLOY BLADES
Transonic Turbine Alloy Blades
● Additive manufacturing (AM) enables production of complex geometries for hostile environments, while using novel alloys, such as GRX-810, an alloy with superior strength and durability at elevated temperatures compared to currently employed alloys.
● An inherent characteristic of such additively manufactured components is a rough surface texture, which varies depending upon the surface enhancement post processing procedure.
● Considered are several surface enhancement post processing procedures, including as built, abrasive flow machining, and chemical polishing in combination with chemical mechanical polishing.
● Resulting surface textures are considered as they affect turbine blade aerodynamic losses, and turbine blade tip surface heat transfer coefficient distributions.
REFERENCE:
Heat Transfer and Aerodynamic Losses of Additively Manufactured Turbine Alloy Blades With Different Surface Enhancement Post-Processing (P. M. Ligrani, C. Bueschges, M. Tatge, B. Weigand, C. S. Subramanian, H. L. Collopy, Z. Taylor, J. Sheth, and P. Gradl), International Journal of Thermal Sciences, accepted for publication, to appear 2025.