Thermal analysis of charring materials based on pyrolysis interface model
| Autor: | Haiming Huang, Hai-Ling Yu, Wei-Jie Li |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Hypersonic speed
Materials science Structural material Renewable Energy Sustainability and the Environment lcsh:Mechanical engineering and machinery pyrolysis interface model pyrolysis thermal protection system Heat flux Space Shuttle thermal protection system Thermal charring materials lcsh:TJ1-1570 Charring Composite material Thermal analysis Pyrolysis |
| Zdroj: | Thermal Science, Vol 18, Iss 5, Pp 1591-1596 (2014) |
| ISSN: | 2334-7163 0354-9836 |
| Popis: | Charring thermal protection systems have been used to protect hypersonic vehicles from high heat loads. The pyrolysis of charring materials is a complicated physical and chemical phenomenon. Based on the pyrolysis interface model, a simulating approach for charring ablation has been designed in order to obtain one dimensional transient thermal behavior of homogeneous charring materials in reentry capsules. As the numerical results indicate, the pyrolysis rate and the surface temperature under a given heat flux rise abruptly in the beginning, then reach a plateau, but the temperature at the bottom rises very slowly to prevent the structural materials from being heated seriously. Pyrolysis mechanism can play an important role in thermal protection systems subjected to serious aerodynamic heat. |
| Databáze: | OpenAIRE |
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