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

doi:10.1016/j.ijthermalsci.2021.107414

IMECH-IR > 流固耦合系统力学重点实验室

	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
通讯作者	Wang, Ruixing(wangruixing@imech.ac.cn)
发表期刊	INTERNATIONAL JOURNAL OF THERMAL SCIENCES
	2022-03-01
卷号	173 页码:12
ISSN	1290-0729
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.
关键词	C SiC composite Hypersonic airflow Laser ablation behavior Thermomechanical erosion Coupled fluid-thermal-ablation analysis
DOI	10.1016/j.ijthermalsci.2021.107414
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000729420000003
关键词[WOS]	STAGNATION-POINT ABLATION ; CHARRING MATERIALS ; SURFACE ABLATION ; HEAT-TRANSFER ; COMBUSTION ; BEHAVIOR ; EROSION ; MODEL ; DISCRIMINATION ; SIMULATIONS
WOS研究方向	Thermodynamics ; Engineering
WOS类目	Thermodynamics ; Engineering, Mechanical
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]
项目资助者	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
论文分区	二类/Q1
力学所作者排名	1
RpAuthor	Wang, Ruixing
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/88176
专题	流固耦合系统力学重点实验室
作者单位	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
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.

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