热沉冷却式薄壁量热计设计及分析
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

O551.1 TH89

基金项目:

国防科工局技术基础科研项目(JSJL2014606B003)


Design and Analysis of The Heat Sink Cooling Thin-Skin Calorimeter
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    为满足大当量战斗部热毁伤威力评估的需求,弥补传统薄壁量热计在爆炸场环境中易变形、易烧蚀的不足,采用在热敏元件后壁面添加热沉体的方式,设计一种新型热沉冷却式热流密度传感器,以间接测量的方式,通过热敏元件后壁面温度,获得入射热流密度。建立传感器理论模型,推导响应时间表达式,并对传感器响应特性进行数值仿真,仿真结果显示:传感器响应时间只与热敏元件的尺寸和材料有关,与热沉体无关。以0.5mm紫铜作为热敏元件的传感器响应时间在1.1ms左右;热沉体吸热系数越大,热敏元件温升越小,同时,随着时间的增加,温升速率逐渐减小。验证试验显示,热沉体的加入可有效降低热敏元件温升,所设计传感器可正确反映入射热流变化。

    Abstract:

    In order to meet the requirements of thermal damage assessment of large equivalent warhead, improve the impact and ablation resistance of the traditional thin-skin calorimeter, a new type of heat sink cooling heat flux sensor is designed by adding heat sink to the rear surface of heat sensitive element. The incident heat flux can be indirectly obtained by measuring the rear surface temperature of heat sensitive element. In this paper, the model of sensor is established, the response time expression is derived, and the response characteristics of the sensor are simulated by numerical simulation. Simulation results show that: The response time of sensor is only related to the size and material of heat sensitive element, and not related to the heat sink. The response time of sensor which designed with the copper heat sensitive element is about 1.1ms; Greater the endothermic coefficient of heat sink is, smaller the temperature rise of heat sensitive element becomes. At the same time, the temperature rise rate decreases gradually with the increase of time. Validation experiment shows that the addition of heat sink can effectively reduce the temperature rise of heat sensitive element, and the sensor can correctly reflect the change of incident heat flux.

    参考文献
    相似文献
    引证文献
引用本文

郭雨岩,孔德仁.热沉冷却式薄壁量热计设计及分析[J].仪器仪表学报,2017,38(7):1698-1704

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2016-12-01
  • 最后修改日期:2017-05-27
  • 录用日期:2017-05-31
  • 在线发布日期: 2024-01-16
  • 出版日期: