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Meeting Materials Science & Technology 2019
Symposium Sandphobic Thermal/Environmental Barrier Coatings
Presentation Title Numerical Investigation of Particle Deposition in Gas Turbine Blades
Author(s) Nishan Jain, Luis Bravo, Anindya Ghoshal, Muthuvel Murugan, Alison Flatau, Michael J. Walock
On-Site Speaker (Planned) Nishan Jain
Abstract Scope Gas turbine engine powered aircraft operating in harsh environments ingest sand particle during near-ground operation. The resultant particle-laden turbulent flow within the engine causes substantial degradation to the high-temperature turbine blades through high energy impact and deposition. To evaluate the deposition characteristics of these molten sand particulate, a functional physics based model is needed to resolve disparate scales present in such a complex multiphase flow. This study is aimed at developing an existing fundamental particle model to resolve particle impingement on the turbine blade under realistic operating conditions. Relevant contact line models from literature will be reviewed in order to obtain accurate contact dynamics and wettability characteristics between molten particulate and thermal barrier coating through inclusion of relevant physics. By providing improved predictions of particle adhesion, deformation and energy losses, the resulting numerical framework will help in identifying critical parameters governing the impact characteristics and the blade damage.


Army Advances in Sandphobic Thermal/Environmental Barrier Coatings
CMAS-Resistant YSZ-Rare Earth Oxide Composite Coatings
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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