热电偶传感器响应在热气流中的热气体
1Faculty of Mechanical Engeenering and Aeronautics, Rzeszow University of Technology, al. Powstanców Warszawy 12, 35-959 Rzeszow, Poland.
Sensors (Basel, Switzerland)
|August 14, 2025
概括
这项研究模拟了热电偶温度传感器动态,以纠正测量错误. 一个第一阶传递函数准确地描述传感器行为,使热传递效应的精确建模成为可能.
科学领域:
- 热力学是一种热力学.
- 流体力学 流体力学 流体力学
- 传感器技术 传感器技术
背景情况:
- 气体流中的温度传感器响应是复杂的,受热传输的影响.
- 热电偶热交点温度低于流温度,导致测量错误.
- 传感器动态模型对于准确的温度解释至关重要.
研究的目的:
- 开发一种使用数值建模识别温度传感器模型的方法.
- 调查流体流速和传感器几何学对传感器动态的影响.
- 量化辐射热传递对传感器模型系数的影响.
主要方法:
- 有限元素方法 (FEM) 解决传感器几何学的过渡热传递和流体流动方程.
- 对传感器响应流体温度变化的数值建模.
- 模型系数估计使用记录的输入/输出信号波形.
主要成果:
- 一个第一阶转移函数有效地模拟了裸珠热电偶传感器动态.
- 流速和传感器电线直径显著影响传输功能的增益和时间常数.
- 辐射传热影响传感器模型系数.
结论:
- 拟议的方法准确地识别了温度传感器的动态.
- 定量模型展示了流速和几何如何影响传感器响应.
- 精确的传感器建模对于在动态环境中可靠的温度测量至关重要.
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