4.7 Article

Damage evolution simulation and laser ablation mechanisms of C/SiC composites under in high-speed airflow environment

期刊

出版社

ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ijthermalsci.2023.108596

关键词

C/SiC composite; Laser ablation behavior; Coupled fluid-thermal-ablation analysis; High-speed airflow; Mechanical ablation

向作者/读者索取更多资源

This study investigates the laser ablation behavior of C/SiC materials under high flow velocity conditions. A numerical simulation approach is presented by integrating a hypersonic aerothermodynamics program with finite element analysis software. Modified ablation equations for C/SiC materials incorporate wall shear stress, local pressure, and dynamic pressure. The numerical simulations are validated through a series of C/SiC ablation experiments, with the 3.0 Ma and 6.0 Ma experiments showing better ablation prediction results.
This study investigates the laser ablation behavior of C/SiC materials under high flow velocity conditions. We present a numerical simulation approach by integrating an independently developed hypersonic aerothermodynamics program with finite element analysis software. Our modified ablation equations for C/SiC materials incorporate wall shear stress, local pressure, and dynamic pressure. Using these equations, we explain the moving forward of the deepest position of ablation(peak ablation) towards the upstream region of the laser irradiation and enhanced ablation in the downstream region. Our numerical simulations are validated through a series of C/SiC ablation experiments conducted at flow field conditions of 1.8 Ma, 3.0 Ma, and 6.0 Ma, with the 3.0 Ma and 6 Ma experiments showing better ablation prediction results.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据