High-resolution measurements of the spatial and temporal scalar structure of a turbulent plume
High-resolution measurements of the spatial and temporal scalar structure of a turbulent plume
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DOI：
10.1007/s003480000263
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发表时间：
2001-07-01
影响因子：
2.4
通讯作者：
Koseff, JR
中科院分区：
文献类型：
--
作者：
Crimaldi, JP;Koseff, JR
描述了两种测量湍流标量结构的技术。平面激光诱导荧光技术用于标量空间结构的高分辨测量，单点激光诱导荧光探针用于标量时间结构的高分辨测量。该技术被用来测量的空间和时间结构的气味羽流释放的低动量，床层源在湍流边界层。对于本研究中使用的实验装置，获得了150 μ m的空间分辨率和1,000 Hz的时间分辨率。结果显示了广泛的湍流结构在丰富的细节，结构的性质在不同区域的羽显着变化。
Two techniques are described for measuring the scalar structure of turbulent flows. A planar laser-induced fluorescence technique is used to make highly resolved measurements of scalar spatial structure, and a single-point laser-induced fluorescence probe is used to make highly resolved measurements of scalar temporal structure. The techniques are used to measure the spatial and temporal structure of an odor plume released from a low-momentum, bed-level source in a turbulent boundary layer. For the experimental setup used in this study, a spatial resolution of 150 mum and a temporal resolution of 1,000 Hz are obtained. The results show a wide range of turbulent structures in rich detail; the nature of the structure varies significantly in different regions of the plume.