|
|||||
|
|
| Numerical simulation of aerodynamic heating and stresses of chemical vapor deposition ZnS forhypersonic vehicles简 | |
| 作者姓名： | Yuan-chun LIU Yu-rong HE Jia-qi ZHU Jie-cai HAN Dong-liang QUAN |
| 基金项目： | Project supported by the Foundation for Innovative Research Groups of the National Natural Science Foundation of China （No. 51121004）, and the Fundamental Research Funds for the Central Universities （No. HIT.BRETIV.201315）, China |
| 摘 要： | Hypersonic vehicles subjected to strong aerodynamic forces and serious aerodynamic heating require more stringent design for an infrared window. In this paper, a finite element analysis is used to present the distributions of thermal and stress fields in the infrared window for hypersonic vehicles based on flowfield studies. A theoretical guidance is provided to evaluate the influence of aerodynamic heating and forces on infrared window materials. The aerodynamic heat flux from Mach 3 to Mach 6 flight at an altitude of 15 km in a standard atmosphere is obtained through flowfield analysis. The thermal and stress responses are then investigated under constant heat transfer coefficient boundary conditions for different Mach numbers. The numerical results show that the maximum stress is higher than the material strength at Mach 6, which means a failure of the material may occur. The maximum stress and temperatures are lower than the material strength and melting point under other conditions, so the material is safe. |
| 关 键 词： | Chemical vapor deposition （CVD） ZnS Infrared window material Thermal and stress responses Hypersonicvehicles |
Numerical simulation of aerodynamic heating and stresses of chemical vapor deposition ZnS for hypersonic vehicles |
|
| Yuan-chun LIU,Yu-rong HE,Jia-qi ZHU,Jie-cai HAN,Dong-liang QUAN.Numerical simulation of aerodynamic heating and stresses of chemical vapor deposition ZnS for hypersonic vehicles[J].Journal of Zhejiang University Science,2014,15(3):185-196. | |
| Authors: | Yuan-chun Liu Yu-rong He Jia-qi Zhu Jie-cai Han Dong-liang Quan |
| Institution: | 1. School of Energy Science & Engineering, Harbin Institute of Technology, Harbin, 150001, China 2. Center of Composite Materials, Harbin Institute of Technology, Harbin, 150001, China 3. Beijing Electro-Mechanical Engineering Institute, Beijing, 100074, China |
| Abstract: | Hypersonic vehicles subjected to strong aerodynamic forces and serious aerodynamic heating require more stringent design for an infrared window. In this paper, a finite element analysis is used to present the distributions of thermal and stress fields in the infrared window for hypersonic vehicles based on flowfield studies. A theoretical guidance is provided to evaluate the influence of aerodynamic heating and forces on infrared window materials. The aerodynamic heat flux from Mach 3 to Mach 6 flight at an altitude of 15 km in a standard atmosphere is obtained through flowfield analysis. The thermal and stress responses are then investigated under constant heat transfer coefficient boundary conditions for different Mach numbers. The numerical results show that the maximum stress is higher than the material strength at Mach 6, which means a failure of the material may occur. The maximum stress and temperatures are lower than the material strength and melting point under other conditions, so the material is safe. |
| Keywords: | |
| 本文献已被 CNKI 维普 SpringerLink 等数据库收录！ | |