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Infrared thermography: An optical method in heat transfer and fluid flow visualisation

机译:红外热成像:传热和流体流动可视化的光学方法

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摘要

This paper deals with the evolution of infrared thermography into a powerful optical method to measure wall convective heat fluxes as well as to investigate the surface flow field behaviour over complex geometries. The most common heat-flux sensors, which are normally used for the measurements of convective heat transfer coefficients, are critically reviewed. Since the infrared scanning radiometer leads to the detection of numerous surface temperatures, its use allows taking into account the effects due to tangential conduction along the sensor; different operating methods together with their implementations are discussed. Finally, the capability of infrared thermography to deal with three complex fluid flow configurations is analysed.
机译:本文将红外热成像技术发展成为一种强大的光学方法,以测量壁对流热通量,并研究复杂几何形状上的表面流场行为。严格审查了通常用于对流传热系数测量的最常见的热通量传感器。由于红外扫描辐射计可检测多种表面温度,因此其使用可以考虑到沿传感器的切向传导所产生的影响。讨论了不同的操作方法及其实现。最后,分析了红外热成像处理三种复杂流体流动形态的能力。

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