Photoluminescence-based simultaneous thermometry and velocimetry in non-aqueous liquid
Photoluminescence-based simultaneous thermometry and velocimetry in non-aqueous liquid
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非水液体中基于光致发光的同步测温测速
DOI：
10.1016/j.ijft.2023.100384
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发表时间：
2023
影响因子：
--
通讯作者：
Sakaue, Hirotaka
中科院分区：
文献类型：
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作者：
Yamazaki, Masafumi;Hayashi, Tatsunori;Farahani, Hamed Farmahini;Rangwala, Ali S.;Sakaue, Hirotaka
在材料界面，如气-液，液-液和固-液界面的传热机制，使理解随着时间的推移在界面的几何变化的深刻见解。相对于作为目标材料的液体的温度场和速度场测量对于在不干扰液体的相互作用区域的情况下以时空方式研究该机制是必不可少的。基于激光诱导荧光（LIF）和粒子成像测速（PIV）技术，研究并介绍了非水液体的同时测温和测速方法。选择甲苯作为其中溶解有两种不同发光体的非水性液体。这两种发光体以及PIV粒子以不同的波长发射，这些波长通过高速彩色相机的三个颜色通道同时获取。讨论了满足该方法的测量系统，并在自然对流中进行了验证。
The heat transfer mechanism at the materials interface, such as gas-liquid, liquid-liquid, and solid-liquid interface, gives great insight into understanding the geometrical change in the interface over time. The temperature- and velocity-field measurements with respect to the liquid as the target material are essential to study the mechanism in spatiotemporal manner without disturbing an interaction region of the liquid. The simultaneous thermometry and velocimetry methods for non-aqueous liquid are studied and introduced based on the laser-induced fluorescence (LIF) and particle imaging velocimetry (PIV). Toluene is chosen as a non-aquatic liquid in which two different luminophores are dissolved. These two luminophores as well as the PIV particle emit at different wavelengths that are simultaneously acquired through three color channels of a high-speed color camera. The measurement system satisfying the proposed method is discussed and validated in a natural convection flow.