| 非稳态环境下塞式热流传感器的仿真与分析 |
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| 引用本文： | 徐秋瑾,杜红棉,马游春,王家祺.非稳态环境下塞式热流传感器的仿真与分析[J].科学技术与工程,2022,22(7):2701-2708. |
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| 作者姓名： | 徐秋瑾 杜红棉 马游春 王家祺 |
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| 摘 要： | 非稳态的热流密度测试是一项在工业、航天等领域的重要研究内容。本文针对爆炸场非稳态测试环境恶劣，气体高速流动，温度变化迅速的问题，对塞式热流传感器的组成材料、热敏元件等进行了重新选择。根据塞式热流传感器的组成结构和测量原理进行了理论推导，得到了塞式热流传感器测量热量的数学模型。针对非稳态爆炸场环境特点，对塞式热流传感器的热敏元件进行了爆炸冲击波下的应力仿真，获得了抗压力冲击的热敏元件参数，之后进行了非稳态热流的热力学仿真，得到了传感器热敏元件的温升曲线，最终确定了热敏元件的厚度与直径等要素。仿真结果表明，所设计的塞式热流传感器量程为0～9.6 MW·m-2，响应时间为70 ms，测量误差为3.1%。此结果在一定程度上可满足爆炸场热流密度测试需求。
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| 关 键 词： | 热流密度 热力学 有限元分析 热流传感器 |
| 收稿时间： | 2021/6/1 0:00:00 |
| 修稿时间： | 2021/12/9 0:00:00 |
Plug-type Heat Flow Sensor in Unstable Environment Simulation and Analysis |
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| Xu Qiujin,Du Hongmian,Ma Youchun,Wang Jiaqi.Plug-type Heat Flow Sensor in Unstable Environment Simulation and Analysis[J].Science Technology and Engineering,2022,22(7):2701-2708. |
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| Authors: | Xu Qiujin Du Hongmian Ma Youchun Wang Jiaqi |
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| Affiliation: | North University of China |
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| Abstract: | Unsteady heat flux measurement is an important research content in industry, aerospace and other fields. In order to solve the problems of bad unsteady test environment, high-speed gas flow and rapid temperature change in explosion field, the composition materials and thermal elements of plug heat flow sensor were reselected. According to the structure and measurement principle of plug heat flow sensor, the mathematical model of heat measurement by plug heat flow sensor was obtained. According to the environmental characteristics of unsteady explosion field, the thermal element of plug heat flow sensor was simulated under explosion shock wave, and the parameters of thermal element resisting pressure shock were obtained. Then the thermodynamic simulation of unsteady heat flow was carried out, and the temperature rise curve of thermal element was obtained. Finally, the thickness and diameter of thermal element were determined. The simulation results show that the range of the plug heat flow sensor is 0~9.6 mw·m-2, the response time is 70 ms, and the measurement error is 3.1%. To some extent, the results can meet the requirements of heat flux measurement in explosion field. |
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| Keywords: | heat flux thermodynamics finite element analysis heat flux sensor |
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