| Decoupling mechanisms of "avalanche" phenomenon for laser ablation of C/SiC composites in hypersonic airflow environment | |
Wang Z(王哲)1,2; Wang RX(王睿星)1,2; Song HW(宋宏伟)1,2 ; Ma T(马特)1,2; Wang JT(王江涛)1,2; Yuan W(袁武)1,2; Huang CG(黄晨光)2
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| Corresponding Author | Wang, Ruixing(wangruixing@imech.ac.cn) |
| Source Publication | INTERNATIONAL JOURNAL OF THERMAL SCIENCES
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| 2022-03-01 | |
| Volume | 173Pages:12 |
| ISSN | 1290-0729 |
| Abstract | When C/SiC composites subjected to high-power laser irradiation under hypersonic airflow environment, "avalanche" phenomenon was found, i.e., the ablation rate was significantly higher than that under static air environment. To reveal this phenomenon, parallel experiments of laser ablation under static air, short-time and long-time hypersonic airflow environments were carried out. Ablation models including oxidation, sublimation and erosion considering coupling effects of airflow and C/SiC composites were introduced, and a coupled fluid thermal-ablation numerical simulation procedure was proposed and carried out. The relationship between ablation rates and aerodynamic pressure was discussed, and the contributions of different ablation mechanisms were quantitively evaluated. In hypersonic airflow environments, sublimation rate was increased due to the decreased local pressure, and erosion rate was accelerated as a result of increased pressure head at downstream area. The combined effect of augmented sublimation and accelerated erosion accounted for the main reason of "avalanche" phenomenon under hypersonic airflow. |
| Keyword | C SiC composite Hypersonic airflow Laser ablation behavior Thermomechanical erosion Coupled fluid-thermal-ablation analysis |
| DOI | 10.1016/j.ijthermalsci.2021.107414 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000729420000003 |
| WOS Keyword | STAGNATION-POINT ABLATION ; CHARRING MATERIALS ; SURFACE ABLATION ; HEAT-TRANSFER ; COMBUSTION ; BEHAVIOR ; EROSION ; MODEL ; DISCRIMINATION ; SIMULATIONS |
| WOS Research Area | Thermodynamics ; Engineering |
| WOS Subject | Thermodynamics ; Engineering, Mechanical |
| Funding Project | National Natural Science Foundation of China[11902322] ; National Natural Science Foundation of China[11472276] ; National Natural Science Foundation of China[11332011] ; National Natural Science Foundation of China[11972035] ; National Natural Science Foundation of China[91016025] ; National Natural Science Foundation of China[11972033] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22000000] |
| Funding Organization | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | Wang, Ruixing |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/88176 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Wang Z,Wang RX,Song HW,et al. Decoupling mechanisms of "avalanche" phenomenon for laser ablation of C/SiC composites in hypersonic airflow environment[J]. INTERNATIONAL JOURNAL OF THERMAL SCIENCES,2022,173:12. |
| APA | 王哲.,王睿星.,宋宏伟.,马特.,王江涛.,...&黄晨光.(2022).Decoupling mechanisms of "avalanche" phenomenon for laser ablation of C/SiC composites in hypersonic airflow environment.INTERNATIONAL JOURNAL OF THERMAL SCIENCES,173,12. |
| MLA | 王哲,et al."Decoupling mechanisms of "avalanche" phenomenon for laser ablation of C/SiC composites in hypersonic airflow environment".INTERNATIONAL JOURNAL OF THERMAL SCIENCES 173(2022):12. |
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| Jp2022FA495_2022_Dec（8663KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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