CIESC Journal ›› 2014, Vol. 65 ›› Issue (S1): 188-193.DOI: 10.3969/j.issn.0438-1157.2014.z1.030

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Numerical simulation of thermal radiation effect for plane window in aerodynamic thermal environment

LIU Yuanchun1, YUAN Zigui1, LI Tianyu1, HE Yurong1, ZHU Jiaqi2   

  1. 1. School of Energy Science & Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China;
    2. Center of Composite Materials, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China
  • Received:2014-02-10 Revised:2014-02-15 Online:2014-05-30 Published:2014-05-30
  • Supported by:

    supported by the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (51121004), Doctoral Scientific Fund Project of the Ministry of Education of China (20112302110036) and the Fundamental Research Funds for the Central Universities (HIT.BRETIV.201315).

平面窗口气动热辐射效应数值模拟

刘元春1, 袁子规1, 李天宇1, 何玉荣1, 朱嘉琦2   

  1. 1. 哈尔滨工业大学能源科学与工程学院, 黑龙江 哈尔滨 150001;
    2. 哈尔滨工业大学复合材料与结构研究所, 黑龙江 哈尔滨 150001
  • 通讯作者: 何玉荣
  • 基金资助:

    国家自然科学基金委创新研究群体(51121004);教育部博士点基金(博导类)(20112302110036);中央高校基本科研业务费专项资金资助(HIT.BRETIV.201315)。

Abstract: In this paper, a finite element analysis is used to present the distributions of thermal fields and stress fields at different Mach numbers at an altitude of 15 km in a standard atmosphere for the CVD ZnS plane window. Then, the radiation intensity distribution of the window is obtained according to the temperature distribution. The results show that the temperature increases sharply in a short time, then the temperature distribution remains stable. The stress reaches the maximum value in an extremely short time and then decreases. The imaging quality of the plane window rapidly decreases with increasing the Mach number. The thermal radiation effect is one key factor for the quality of infrared image.

Key words: plane window, aerodynamic thermal, radiation, finite element analysis, simulation, heat transfer

摘要: 采用有限元法研究飞行高度为15 km不同马赫数下CVD ZnS的温度场和应力场分布情况。随后,根据窗口的温度场分布,仿真得到窗口干扰辐射强度的分布,从而对窗口的气动热辐射效应进行评估。模拟结果表明,温度在初始阶段急剧升高,随后达到稳定,同时,应力响应在极短的时间内达到最大值,随后降低。可见,窗口的成像质量随马赫数的增加急剧降低,红外窗口的热辐射是制约红外成像质量的重要因素。

关键词: 平面窗口, 气动热, 辐射, 有限元, 模拟, 传热

CLC Number: