Coupled thermal-fluid-structure behavior of airflow over target irradiated by high-power laser
文献类型：会议论文
| 作者 | Huang YH(黄亿辉) ; Song HW(宋宏伟); Huang CG(黄晨光)
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| 出版日期 | 2013 |
| 会议名称 | 2nd International Symposium on Laser Interaction with Matter (LIMIS) |
| 会议日期 | SEP 09-12, 2012 |
| 会议地点 | Xian, PEOPLES R CHINA |
| 通讯作者邮箱 | songhw@imech.ac.cn |
| 关键词 | Laser irradiation thermo-mechanical effect coupled thermal-fluid-structure airflow |
| 卷号 | 8796 |
| 页码 | 879605 |
| 通讯作者 | Huang, YH (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China. |
| 中文摘要 | In this paper, a coupled thermal-fluid-structure numerical model is presented to investigate interactive effects of airflow, high power laser and metallic target. The numerical model is validated by experiments recently carried out by Lawrence Livermore National Laboratory. The numerical simulation also verified some experimental observations, which show that the convective heat transfer effects of airflow and the aerodynamic pressure play important roles to the damage behavior of laser irradiated target. The convective heat transfer of airflow reduces the temperature of laser irradiated area therefore delays the time reaching damage. When a thin-walled metallic panel is heated up to a high temperature below the melting point, it is softened and the strength nearly vanishes, the aerodynamic pressure becomes a dominant factor that controls the damage pattern even when it is in a low magnitude. The effects of airflow velocity and laser power on the damage behavior of irradiated metallic target are investigated with the aid of the coupled thermal-fluid-structure numerical model, where critical irradiation times to reach the yield failure yield t(yield) and melting failure t(yield) are the main concern. Results show that, when the incidence laser power increases from 500 W/cm(2) to 5000 W/cm(2), significant drop in failure times are found as the incidence laser power increases. When the Mach number of airflow increases from 1.2 to 4.0 at a given incident laser power, a critical airflow velocity is found for the irradiation time to reach the yield strength and melting point, i.e., the maximum irradiation time to reach failure is found at the Mach 1.8 similar to 2.0. The competition of aerodynamic heating before the laser is switch on and airflow cooling after the target is heated up accounts for effects. |
| 收录类别 | CPCI-S ; EI |
| 产权排序 | [Huang, Yihui; Song, Hongwei; Huang, Chenguang] Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China |
| 会议网址 | http://dx.doi.org/10.1117/12.2010236 |
| 会议录 | 2ND INTERNATIONAL SYMPOSIUM ON LASER INTERACTION WITH MATTER (LIMIS 2012)
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| 会议录出版者 | SPIE-INT SOC OPTICAL ENGINEERING |
| 学科主题 | Optics ; Physics ; Applied |
| 语种 | 英语 |
| ISSN号 | 0277-786X |
| ISBN号 | 978-0-8194-9639-3 |
| WOS记录号 | WOS:000323339600005 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/47575]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 推荐引用方式 GB/T 7714 | Huang YH,Song HW,Huang CG. Coupled thermal-fluid-structure behavior of airflow over target irradiated by high-power laser[C]. 见:2nd International Symposium on Laser Interaction with Matter (LIMIS). Xian, PEOPLES R CHINA. SEP 09-12, 2012.http://dx.doi.org/10.1117/12.2010236. |
入库方式： OAI收割
来源：力学研究所
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