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Science China Technological Sciences

, Volume 62, Issue 8, pp 1322–1330 | Cite as

Evaluation of numerical ablation model for charring composites

  • Wei Li
  • Jun Zhang
  • GuoDong FangEmail author
  • WeiJie Li
  • Jun LiangEmail author
  • SongHe Meng
Article
  • 17 Downloads

Abstract

Charring composites are widely used in the thermal protection system (TPS) to consume the intense aerodynamic heating during vehicle reentry. The ablation and thermal responses for the charring composites can be studied by using a numerical ablation model, in which the surface ablation and volume ablation could be taken into account. The coupling interactions among temperature, gas motion and interior pressure producing the pyrolysis gas could make the computation more complicated. A multi-physics model is developed to simulate the thermal response coupled with volume ablation and surface ablation. After studying four typical ablation cases, the model is validated, and then the heat transfer mechanisms in ablation are investigated. It is found that the viscous dissipation energy by the motion of pyrolysis gas can be neglected in the simulation. Also, the flow of pyrolysis gas plays an important role in the temperature response, especially under high heat flux condition.

Keywords

ablation charring composites numerical model coupling 

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Science and Technology on Advanced Composites in Special Environments Key LaboratoryHarbin Institute of TechnologyHarbinChina
  2. 2.Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijingChina

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