Accuracy of pressure-sensitive paint
Accuracy of pressure-sensitive paint
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DOI：
10.2514/2.1276
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发表时间：
2001-01-01
期刊：
影响因子：
2.5
通讯作者：
Sullivan, JP
中科院分区：
文献类型：
--
作者：
Liu, TS;Guille, M;Sullivan, JP
从系统建模的角度研究了压敏涂料(PSP)测量的不确定度。通过研究PSP中的辐射能量传输和光电探测器对发光的响应，得到了成像系统输出与PSP发光之间的函数关系。该关系提供了对各种基本误差源的物理来源的洞察，并允许估计由基本误差贡献的总的PSP测量不确定度。对误差传播方程中的基本误差及其灵敏度系数进行了估算。给出了PSP可能达到的最小压力不确定度的实用公式，以及满足所要求的压力精度的基本误差的上界。给出了一个指导性的亚音速Joukowsky翼型的例子，以说明PSP测量的不确定度估计。
Uncertainty in pressure-sensitive paint (PSP) measurement is investigated from a standpoint of system modeling. A functional relation between the imaging system output and luminescent emission from PSP is obtained based on studies of radiative energy transports in PSP and photodetector response to luminescence. This relation provides insights into physical origins of various elemental error sources and allows an estimate of the total PSP measurement uncertainty contributed by the elemental errors. The elemental errors and their sensitivity coefficients in the error propagation equation are evaluated. Useful formulas are given for the minimum pressure uncertainty that PSP can possibly achieve, as are the upper bounds of the elemental errors to meet required pressure accuracy, An instructive example of a Joukowsky airfoil in subsonic flows is given to illustrate uncertainty estimates in PSP measurements.