TY - GEN
T1 - Simulating CMAS Infiltration of an EB-PVD Thermal Barrier Coating Using the Volume-of-Fluid Method
AU - Cavainolo, Brendon A.
AU - Kinzel, Michael P.
AU - Naraparaju, Ravisankar
AU - Kabir, Mohammad R.
N1 - Publisher Copyright:
© 2023, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2023
Y1 - 2023
N2 - The importance of understanding how Calcium-Magnesium-Alumino-Silicate infiltrated thermal barrier coatings is growing as aero engine temperatures become hotter for efficiency gains. The infiltration of a modeled 7YSZ EB-PVD TBC with a manufactured variant of CMAS was simulated using the Eulerian Volume-of-Fluid method, including models for wall porosity(to air), surface tension, melting-solidification, and conjugate heat transfer. Characterization studies were done based on both the liquid CMAS viscosity, and the CMAS starting temperature. Infiltration times using experimentally measured viscosity were 2.5x slower than the viscosity calculated by an analytical model. The starting temperature (and initial solid volume fraction)of the CMAS had a slight affect on the infiltration time, which increased periodically with increasing starting temperature.
AB - The importance of understanding how Calcium-Magnesium-Alumino-Silicate infiltrated thermal barrier coatings is growing as aero engine temperatures become hotter for efficiency gains. The infiltration of a modeled 7YSZ EB-PVD TBC with a manufactured variant of CMAS was simulated using the Eulerian Volume-of-Fluid method, including models for wall porosity(to air), surface tension, melting-solidification, and conjugate heat transfer. Characterization studies were done based on both the liquid CMAS viscosity, and the CMAS starting temperature. Infiltration times using experimentally measured viscosity were 2.5x slower than the viscosity calculated by an analytical model. The starting temperature (and initial solid volume fraction)of the CMAS had a slight affect on the infiltration time, which increased periodically with increasing starting temperature.
UR - https://www.scopus.com/pages/publications/85200202342
UR - https://www.scopus.com/pages/publications/85200202342#tab=citedBy
U2 - 10.2514/6.2023-4427
DO - 10.2514/6.2023-4427
M3 - Conference contribution
AN - SCOPUS:85200202342
SN - 9781624107047
T3 - AIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023
BT - AIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023
Y2 - 12 June 2023 through 16 June 2023
ER -