Decoupling mechanisms of "avalanche" phenomenon for laser ablation of C/SiC composites in hypersonic airflow environment

doi:10.1016/j.ijthermalsci.2021.107414

CORC > 力学研究所 > 中国科学院力学研究所 > 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
	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)1
刊名	INTERNATIONAL JOURNAL OF THERMAL SCIENCES
	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
DOI	10.1016/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.
分类号	二类/Q1
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关键词	STAGNATION-POINT ABLATION ; CHARRING MATERIALS ; SURFACE ABLATION ; HEAT-TRANSFER ; COMBUSTION ; BEHAVIOR ; EROSION ; MODEL ; DISCRIMINATION ; SIMULATIONS
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
其他责任者	Wang, Ruixing
内容类型	期刊论文
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-)
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 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.