中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 力学研究所
  3. 中国科学院力学研究所
  4. 流固耦合系统力学重点实验室(2012-)
Decoupling mechanisms of "avalanche" phenomenon for laser ablation of C/SiC composites in hypersonic airflow environment

文献类型：期刊论文

作者Wang, Zhe1,2; Wang, Ruixing1,2; Song, Hongwei1,2; Ma, Te1,2; Wang, Jiangtao1,2; Yuan, Wu1,2; Huang, Chenguang1; Huang CG(黄晨光); Wang JT(王江涛); Song HW(宋宏伟)
刊名INTERNATIONAL JOURNAL OF THERMAL SCIENCES
出版日期2022-03-01
卷号173页码:12
关键词C SiC composite Hypersonic airflow Laser ablation behavior Thermomechanical erosion Coupled fluid-thermal-ablation analysis
ISSN号1290-0729
DOI10.1016/j.ijthermalsci.2021.107414
通讯作者Wang, Ruixing(wangruixing@imech.ac.cn)
英文摘要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.
WOS关键词STAGNATION-POINT ABLATION ; CHARRING MATERIALS ; SURFACE ABLATION ; HEAT-TRANSFER ; COMBUSTION ; BEHAVIOR ; EROSION ; MODEL ; DISCRIMINATION ; SIMULATIONS
资助项目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]
WOS研究方向Thermodynamics ; Engineering
语种英语
WOS记录号WOS:000729420000003
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://dspace.imech.ac.cn/handle/311007/88175]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者Wang, Ruixing
作者单位1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Zhe,Wang, Ruixing,Song, Hongwei,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 Wang, Zhe.,Wang, Ruixing.,Song, Hongwei.,Ma, Te.,Wang, Jiangtao.,...&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 Wang, Zhe,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.

入库方式： OAI收割

来源：力学研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。