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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
Corresponding AuthorWang, Ruixing(wangruixing@imech.ac.cn)
Source PublicationINTERNATIONAL JOURNAL OF THERMAL SCIENCES
2022-03-01
Volume173Pages:12
ISSN1290-0729
AbstractWhen 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.
KeywordC SiC composite Hypersonic airflow Laser ablation behavior Thermomechanical erosion Coupled fluid-thermal-ablation analysis
DOI10.1016/j.ijthermalsci.2021.107414
Indexed BySCI ; EI
Language英语
WOS IDWOS:000729420000003
WOS KeywordSTAGNATION-POINT ABLATION ; CHARRING MATERIALS ; SURFACE ABLATION ; HEAT-TRANSFER ; COMBUSTION ; BEHAVIOR ; EROSION ; MODEL ; DISCRIMINATION ; SIMULATIONS
WOS Research AreaThermodynamics ; Engineering
WOS SubjectThermodynamics ; Engineering, Mechanical
Funding ProjectNational 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 OrganizationNational Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
Classification二类/Q1
Ranking1
ContributorWang, Ruixing
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/88176
Collection流固耦合系统力学重点实验室
Affiliation1.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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