Numerical simulation of aerodynamic heating and stresses of chemical vapor deposition ZnS for hypersonic vehicles

作者：Liu Yuan chun; He Yu rong^*; Zhu Jia qi; Han Jie cai; Quan Dong liang

来源：Journal of Zhejiang University-Science A(Applied Physics & Engineering), 2014, 15(3): 185-196.

DOI：10.1631/jzus.A1300341

• Chemical vapor deposition (CVD) ZnS
• Infrared window material
• Thermal and stress responses
• Hypersonic vehicles

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.

• 出版日期2014-3
• 单位北京机电研究所; 北京市电加工研究所; 哈尔滨工业大学