A Guide to Uncertainty Analysis of Hot-Wire Data
A Guide to Uncertainty Analysis of Hot-Wire Data
复制标题
热线数据不确定性分析指南
DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
S. Yavuzkurt
中科院分区：
文献类型：
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作者：
S. Yavuzkurt
本文对湍流中热线测量数据的不确定性进行了分析，提出了时间平均和实时数据处理技术。推导了数据采集和评定各步骤的一般形式的不确定度方程。文中给出了二维平板边界层数值算例。结果表明，实时数据减少技术一般有一个较低的和更均匀的不确定性分布比时间平均技术（其不确定性高得多的近壁数据）。
Uncertainty analysis of hot-wire data in turbulent flows are made for time-averaging and real-time data reduction techniques. Equations of uncertainty are derived in general form for every step of data taking and evaluation. Numerical examples are supplied for two-dimensional flat plate boundary layer data. Results show that the real-time data reduction techniques generally have a lower and much more uniform uncertainty distribution than the time-averaging techniques (whose uncertainties are much higher for the near-wall data).