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空气动力表面温度和压力分布的精确测量对理解复杂流场内部机制和流体力学仿真模型的验证具有重要意义。热敏磷光表面测温技术作为一种面测量技术,具有非接触测量、可对试件全尺度测量、空间分辨率高等优点。开发了一种室温到800 K温度范围内的双色热敏磷光涂层材料。该发光材料受激辐射的发光光谱的两个发射峰光强在不同温度下呈现不同的衰减趋势,根据这种规律发展了双色测温技术。建立了热敏涂料温度标定系统,获得了双峰光强比与温度的变化曲线。采用双色法测温技术测量了旋转曲面物体表面的温度分布。结果表明,双色热敏磷光涂层测温技术能够实现物体表面温度的定量测量,对于测试技术的发展具有重要推动作用。
The accurate measurement of the aerodynamic surface temperature and pressure distribution is of great importance for understanding the internal mechanisms of complex flow field and the verification of the hydrodynamic simulation model. Thermosensitive phosphorescent surface temperature measurement technology as a surface measurement technology, with non-contact measurement, the full scale measurement of the specimen, the advantages of high spatial resolution. A two-color, thermosensitive phosphorescent coating was developed at room temperature to 800 K. The two emission peaks of the emission spectra of the luminescent material exhibit different attenuation trends at different temperatures. According to this rule, the two-color temperature measurement technique has been developed. The thermosensitive coating temperature calibration system was established and the curve of the ratio of light intensity to temperature was obtained. The temperature distribution on the surface of the rotating curved surface was measured by the colorimetric method. The results show that the two-color thermosensitive phosphorescent coating temperature measurement technology can achieve the quantitative measurement of the surface temperature, which plays an important role in the development of testing technology.