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Meeting Materials Science & Technology 2019
Symposium Sandphobic Thermal/Environmental Barrier Coatings
Presentation Title Turbulence Modulation Effects in Particle-laden Shear Driven Flows and its Impact on Material Deposition
Author(s) Luis G. Bravo, Nishan Jain, Prashant Khare, Anindya Ghoshal, Muthuvel Murugan, Alison Flatau
On-Site Speaker (Planned) Nishan Jain
Abstract Scope Temperatures in next generation aero turbine engines are expected to reach as high as 3100 F to reap the benefits from thermodynamics efficiency. However, operating at these higher temperatures introduce complex material challenges due to the increased environmental particulate attack on hot components. Sources of ingested particles are, dust ingested during take-off or landing, and volcanic ash suspended in the air after an eruption. The transport of particle laden turbulence occurs at wide range of regimes from the dilute limit where flows seeded with a low concentration of particles exhibit segregation in the particle distribution without altering the flow, to high mass loading suspensions where the turbulence properties are dominated by the cluster drag production. This presentation will review the physical regimes for turbulent multiphase transport and high-speed deposition on material surfaces and discuss results from Eulerian-Lagrangian simulation performed for a wide range of particle loadings at various Stokes numbers.


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CMAS Removal by Spectrally Guided Laser Ablation
Development of Novel CMAS/VA Resistant TBCS: Influence of Chemical Composition and the Microstructure
Effects of Silicate Melt Chemistry on Thermochemical Interactions with Thermal Barrier Oxides
High Resolution Non-invasive Characterization of Calcium-magnesium-alumino-silicate Infiltration in Thermal Barrier Coatings
Multiphase Thermal Barrier Coatings for Broad-base Resistance to Silicate Deposits
Multlayer, Multifunctional, Thermo-structural Coatings to Mitigate Molten Silicate Attack in Aeroengines
Non-silicate Ceramic T-EBC Coatings for SiC CMCs
Numerical Investigation of Particle Deposition in Gas Turbine Blades
Processing of Laser Surface Modification of Functionally Graded Alumina/CYSZ Thermal Barrier Coating
Progress and Challenges in Understanding CMAS Attack and Developing CMAS-phobic T/EBCs
Turbulence Modulation Effects in Particle-laden Shear Driven Flows and its Impact on Material Deposition

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