|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Thermal Property Characterization, Modeling, and Theory in Extreme Environments
||Multiphysics Mesoscale Modeling of Ablative Thermal Protection Systems
||Marina Sessim, Linuyan Shi, Simon Phillpot, Michael Tonks
|On-Site Speaker (Planned)
The Phenolic Impregnated Carbon Ablator (PICA) is NASA’s heritage Thermal Protection System (TPS) material for atmospheric entry of space capsules. It has been successfully tested in previous missions such as Stardust, and it is a potential candidate for future deep-space missions. PICA is composed of carbon fibers embedded in a phenolic resin, which is transformed into char upon ablation. We are developing a multiphysics mesoscale ablation model to better understand the impact of the PICA microstructure on its thermal performance. This model is developed using the Multiphysics Object-Oriented Simulation Environment (MOOSE) framework, a C++ finite element framework developed by the Idaho National Laboratory. The scope of this presentation is to introduce the ablation model, which employs the phase-field method coupled with heat conduction and chemical reaction kinetics. We demonstrate the model capabilities by predicting the thermal performance of a single carbon fiber and multiple fibers under high temperatures.