| About this Abstract |
| 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. |