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Computational ablative thermal response analysis of carbon/phenolic composites for thermal protection system

  • Park, Taehoon (Department of Aerospace Engineering, Seoul National University) ;
  • Lee, Kang-Hyun (Department of Aerospace Engineering, Seoul National University) ;
  • Yun, Gun Jin (Department of Aerospace Engineering, Seoul National University)
  • Received : 2021.07.14
  • Accepted : 2021.08.31
  • Published : 2021.05.25
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Abstract

This study presents an efficient computational methodology to perform ablative thermal response analysis of carbon/phenolic composites by introducing a novel dual-domain technique for heat transfer and gas diffusion physics. Phenomena such as in-depth heat transfer, material decomposition (i.e. pyrolysis), in-depth gas diffusion, and surface recession required for ablation analysis of carbon/phenolic composites are simulated. The proposed method is verified with reference simulation test data from Ablation Workshop for a one-dimensional model under four different combinations with surface heat flux, temperature, pressure boundary conditions, and surface recession conditions verified. A two-dimensional ablation problem was also solved, showing its scalability. Temperatures, recession depth, depth of boundaries between layers, the mass flux of char, and pyrolysis gas are obtained and compared with the reference for all cases.

Keywords

Acknowledgement

This work was supported by the Creative-Pioneering Researchers Program, the Institute of Engineering Research at Seoul National University, and the BK21 Program funded by the Ministry of Education (MOE, Korea) and National Research Foundation of Korea. The authors are grateful for their supports.

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