Use of simultaneous IR temperature measurements and DPIV to investigate thermal plumes in a thick layer cooled from above
Use of simultaneous IR temperature measurements and DPIV to investigate thermal plumes in a thick layer cooled from above
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DOI：
10.1007/s003480050330
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发表时间：
1999-06
影响因子：
2.4
通讯作者：
R. Volino;Geoffrey B. Smith
中科院分区：
文献类型：
--
作者：
R. Volino;Geoffrey B. Smith
本文对从上方蒸发冷却的水平厚层流进行了表面温度和下垫面速度场的同时测量。以前的研究集中在冷却表面的温度场，或在少数情况下，在流动中的点速度测量。据作者所知，目前的调查是第一次同时和非侵入性的文件，在这种类型的流的表面温度和底层的速度场。红外（IR）传感阵列被用来捕捉瞬时的自由表面温度场，而在平面上的二维速度测量垂直或平行于自由表面被收购使用数字粒子图像测速（DPIV）。从两个案件的数据进行了讨论。
Simultaneous measurements of surface temperature and the underlying velocity field are presented for a thick horizontal layer evaporatively cooled from above. Previous studies have focused on either the temperature field at the cooled surface or, in a small number of cases, on point velocity measurements in the flow. The current investigation is, to the knowledge of the authors, the first to simultaneously and non-intrusively document both the surface temperature and underlying velocity field in this type of flow. An infrared (IR) sensing array was used to capture the instantaneous free surface temperature field while two-dimensional velocity measurements in planes either perpendicular or parallel to the free surface were acquired using digital particle image velocimetry (DPIV). Data from two cases are discussed.