Flame Boundary Measurement Using an Electrostatic Sensor Array
Flame Boundary Measurement Using an Electrostatic Sensor Array
复制标题
使用静电传感器阵列进行火焰边界测量
DOI：
10.1109/tim.2020.3014753
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发表时间：
2021
影响因子：
5.6
通讯作者：
Weicheng Xu
中科院分区：
文献类型：
--
作者：
Jiali Wu;Yong Yan;Yonghui Hu;Shan Li;Weicheng Xu
火焰边界是评价火焰热释放率和辐射等特性的重要几何特征。可靠、准确的火焰边界测量是预测火焰结构和优化燃烧系统的必要条件。这样的测量将告知燃烧系统的设计者和操作员。本文首次研究了静电传感器阵列在火焰边界测量中的应用。静电传感器被放置在火焰附近，通过电荷转移来感知火焰的运动。介绍了基于该方法的测量系统的原理、设计、实现和评估。在实验室规模的燃烧试验台上与数码相机进行了对比实验研究，结果表明静电传感器可以对电极与火焰边界之间距离的变化做出响应。火焰边界的重建是利用从传感器阵列获得的一组距离测量来实现的。对于燃油流量0.60 ~ 0.80 L/min范围内的扩散火焰和当量比1.27 ~ 3.81范围内的预混火焰，实验结果表明，该测量系统能够提供可靠的火焰边界测量。各试验条件下相关系数大多大于0.96，平均相对误差在7.4%以内，相对均方根误差在0.09以内。对于扩散火焰，可以实现更精确的火焰边界测量。此外，火焰中电荷的总体极性可以通过传感器信号的极性来确定。
The flame boundary is an important geometrical characteristic for the evaluation of flame properties such as heat release rate and radiation. Reliable and accurate measurement of the flame boundary is desirable for the prediction of flame structure and the optimization of combustion systems. Such measurement will inform the designers and operators of the combustion systems. This article presents for the first time a study of using an electrostatic sensor array for flame boundary measurement. The electrostatic sensor is placed in the vicinity of the flame to sense its movement through charge transfer. The principle, design, implementation, and assessment of a measurement system based on this methodology are introduced. Comparative experimental investigations with a digital camera conducted on a laboratory-scale combustion test rig show that the electrostatic sensor can respond to the variation of the distance between the electrode and the flame boundary. Reconstruction of the flame boundary is achieved using a set of distance measurements obtained from a sensor array. For diffusion flames over the range of fuel flow rate 0.60–0.80 L/min and premixed flames over the range of equivalence ratio 1.27–3.81, experimental results show that the measurement system is capable of providing a reliable measurement of the flame boundary. The correlation coefficients under all test conditions are mostly larger than 0.96, the mean relative errors within 7.4%, and the relative root-mean-square errors within 0.09. More accurate flame boundary measurements are achieved for diffusion flames. In addition, the overall polarity of charges in a flame can be determined from the polarity of the sensor signal.
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影响因子：
1.3
作者：
S. S. Krishnan-S.;J. M. Abshire;P. Sunderland;Z. Yuan;J. Gore
通讯作者：
S. S. Krishnan-S.;J. M. Abshire;P. Sunderland;Z. Yuan;J. Gore
影响因子：
4.7
作者：
R. Waterfall;R. He;C. M. Beck
通讯作者：
R. Waterfall;R. He;C. M. Beck
DOI：
--
发表时间：
1969
期刊：
--
影响因子：
--
作者：
J. Lawton;F. Weinberg
通讯作者：
J. Lawton;F. Weinberg
DOI：
--
发表时间：
1988-05
期刊：
--
影响因子：
--
作者：
S. Franco
通讯作者：
S. Franco
影响因子：
1.8
作者：
CALCOTE, HF;KEIL, DG
通讯作者：
KEIL, DG