TY - GEN
T1 - Surface properties on thermal protection system microstructure during hypersonic ablation
AU - Achambath, Ashwin Dev
AU - Ramjatan, Sahadeo
AU - Schwartzentruber, Thomas E
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Hypersonic boundary layer flow during Stardust entry is simulated over Thermal Protection System (TPS) microstructure using the Direct Simulation Monte Carlo (DSMC) method. During the ablation process, the thermal stresses and traction forces acting on the TPS microstructure, combined with its oxidation, could affect its structural integrity. Hence, the local surface properties, namely, heat flux and traction force acting on the microstructure are estimated, studied and compared to estimates from Computation Fluid Dynamics (CFD). Preliminary simulations have been performed on different microstructures varying in porosity, orientation and diameter of fibers to study its effect on the surface properties. The capability of DSMC to compute relevant surface properties required for thermo-structural material response studies of TPS structures is demonstrated.
AB - Hypersonic boundary layer flow during Stardust entry is simulated over Thermal Protection System (TPS) microstructure using the Direct Simulation Monte Carlo (DSMC) method. During the ablation process, the thermal stresses and traction forces acting on the TPS microstructure, combined with its oxidation, could affect its structural integrity. Hence, the local surface properties, namely, heat flux and traction force acting on the microstructure are estimated, studied and compared to estimates from Computation Fluid Dynamics (CFD). Preliminary simulations have been performed on different microstructures varying in porosity, orientation and diameter of fibers to study its effect on the surface properties. The capability of DSMC to compute relevant surface properties required for thermo-structural material response studies of TPS structures is demonstrated.
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U2 - 10.2514/6.2019-1283
DO - 10.2514/6.2019-1283
M3 - Conference contribution
SN - 9781624105784
T3 - AIAA Scitech 2019 Forum
BT - AIAA Scitech 2019 Forum
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Scitech Forum, 2019
Y2 - 7 January 2019 through 11 January 2019
ER -